It looks like your disks are quite fragmented, with most of the free space
being in 8K-63KB chunks.  There are very few larger (>=128K) free chunks,
which can cause ZFS to load most of the metaslabs when looking for a 128K
free chunk (which it does periodically, especially if the ZIL is in heavy
use).

I would guess that what you are seeing is that when you import each pool,
it is playing the ZIL (since you had an unclean shutdown), and that is
needing to allocate some larger chunks (around 128KB), which needs to
search (and thus load) most of the metaslabs.  This is causing the 26GB of
RAM used by range_seg_cache.

This behavior is not really specific to having a lot of pools.  If you had
one big pool with all the disks in it, ZFS would still try to allocate from
each disk, causing most of that disk's metaslabs to be loaded (ZFS selects
first disk, then metaslab, then offset within that metaslab).

The good news is that we (Delphix, specifically Paul Dagnelie and I) have
been working on improving metaslab memory usage, achieving a roughly 5x
reduction in memory requirement (i.e. loaded metaslabs will use 1/5 the RAM
as previous).  We expect to open PR's against ZoL for this work within the
next month (it depends on https://github.com/zfsonlinux/zfs/pull/8442).

If you are able to decrease fragmentation, you'll also see memory
improvements here.  You probably have a workload with lots of small files
(or a few big files/zvols with small recordsize/volblocksize), which is
inherently difficult on fragmentation.  But you can decrease fragmentation
by using a larger sector size (ashift), at the cost of some compression
ratio.

--matt

On Mon, Jul 8, 2019 at 2:43 PM <nagy.att...@gmail.com> wrote:

> On Friday, July 05, 2019, at 7:43 PM, Matthew Ahrens wrote:
>
> How many metaslabs are there total, and how many are loaded?
>
>
> zdb -m for a disk (on machine 03, disk5, for future reference) says:
>
> Metaslabs:
> vdev          0
> metaslabs   116   offset                spacemap          free
> ---------------   -------------------   ---------------   -------------
> metaslab      0   offset            0   spacemap     37   free    9.87G
> metaslab      1   offset    800000000   spacemap     38   free    10.1G
> metaslab      2   offset   1000000000   spacemap     44   free    11.5G
> metaslab      3   offset   1800000000   spacemap     45   free    12.1G
> metaslab      4   offset   2000000000   spacemap     50   free    10.4G
> metaslab      5   offset   2800000000   spacemap     55   free    9.59G
> metaslab      6   offset   3000000000   spacemap     56   free    9.43G
> metaslab      7   offset   3800000000   spacemap     59   free    10.9G
> metaslab      8   offset   4000000000   spacemap     60   free    10.6G
> metaslab      9   offset   4800000000   spacemap     64   free    10.3G
> metaslab     10   offset   5000000000   spacemap     65   free    11.3G
> metaslab     11   offset   5800000000   spacemap     69   free    13.7G
> metaslab     12   offset   6000000000   spacemap     70   free    12.6G
> metaslab     13   offset   6800000000   spacemap     74   free    12.7G
> metaslab     14   offset   7000000000   spacemap     41   free    13.3G
> metaslab     15   offset   7800000000   spacemap     46   free    12.3G
> metaslab     16   offset   8000000000   spacemap     52   free    11.6G
> metaslab     17   offset   8800000000   spacemap     61   free    10.8G
> metaslab     18   offset   9000000000   spacemap     66   free    10.4G
> metaslab     19   offset   9800000000   spacemap     71   free    11.5G
> metaslab     20   offset   a000000000   spacemap     75   free    11.8G
> metaslab     21   offset   a800000000   spacemap     79   free    11.5G
> metaslab     22   offset   b000000000   spacemap     36   free    13.0G
> metaslab     23   offset   b800000000   spacemap     80   free    12.1G
> metaslab     24   offset   c000000000   spacemap     43   free    13.1G
> metaslab     25   offset   c800000000   spacemap     82   free    12.9G
> metaslab     26   offset   d000000000   spacemap     83   free    13.4G
> metaslab     27   offset   d800000000   spacemap     54   free    10.9G
> metaslab     28   offset   e000000000   spacemap     86   free    12.0G
> metaslab     29   offset   e800000000   spacemap     58   free    11.3G
> metaslab     30   offset   f000000000   spacemap     89   free    10.3G
> metaslab     31   offset   f800000000   spacemap     63   free    11.9G
> metaslab     32   offset  10000000000   spacemap     90   free    10.4G
> metaslab     33   offset  10800000000   spacemap     68   free    12.5G
> metaslab     34   offset  11000000000   spacemap     91   free    11.7G
> metaslab     35   offset  11800000000   spacemap     73   free    12.1G
> metaslab     36   offset  12000000000   spacemap     39   free    11.1G
> metaslab     37   offset  12800000000   spacemap     94   free    11.7G
> metaslab     38   offset  13000000000   spacemap     51   free    12.5G
> metaslab     39   offset  13800000000   spacemap     95   free    11.8G
> metaslab     40   offset  14000000000   spacemap     97   free    12.2G
> metaslab     41   offset  14800000000   spacemap     48   free    12.2G
> metaslab     42   offset  15000000000   spacemap     76   free    12.6G
> metaslab     43   offset  15800000000   spacemap     78   free    11.6G
> metaslab     44   offset  16000000000   spacemap     35   free    11.7G
> metaslab     45   offset  16800000000   spacemap     85   free    11.5G
> metaslab     46   offset  17000000000   spacemap     42   free    10.7G
> metaslab     47   offset  17800000000   spacemap     81   free    14.9G
> metaslab     48   offset  18000000000   spacemap     98   free    12.2G
> metaslab     49   offset  18800000000   spacemap    100   free    11.9G
> metaslab     50   offset  19000000000   spacemap    102   free    12.3G
> metaslab     51   offset  19800000000   spacemap     57   free    14.0G
> metaslab     52   offset  1a000000000   spacemap     88   free    12.5G
> metaslab     53   offset  1a800000000   spacemap     62   free    12.4G
> metaslab     54   offset  1b000000000   spacemap     84   free    11.7G
> metaslab     55   offset  1b800000000   spacemap     67   free    11.3G
> metaslab     56   offset  1c000000000   spacemap    101   free    11.4G
> metaslab     57   offset  1c800000000   spacemap     72   free    13.8G
> metaslab     58   offset  1d000000000   spacemap    103   free    12.7G
> metaslab     59   offset  1d800000000   spacemap     93   free    13.8G
> metaslab     60   offset  1e000000000   spacemap     49   free    12.3G
> metaslab     61   offset  1e800000000   spacemap    105   free    11.0G
> metaslab     62   offset  1f000000000   spacemap     96   free    11.2G
> metaslab     63   offset  1f800000000   spacemap     47   free    14.6G
> metaslab     64   offset  20000000000   spacemap    106   free    13.9G
> metaslab     65   offset  20800000000   spacemap     77   free    14.2G
> metaslab     66   offset  21000000000   spacemap    110   free    13.1G
> metaslab     67   offset  21800000000   spacemap    112   free    10.6G
> metaslab     68   offset  22000000000   spacemap     53   free    12.6G
> metaslab     69   offset  22800000000   spacemap    113   free    10.8G
> metaslab     70   offset  23000000000   spacemap     92   free    13.9G
> metaslab     71   offset  23800000000   spacemap     99   free    13.4G
> metaslab     72   offset  24000000000   spacemap    120   free    14.3G
> metaslab     73   offset  24800000000   spacemap    109   free    14.1G
> metaslab     74   offset  25000000000   spacemap     87   free    13.3G
> metaslab     75   offset  25800000000   spacemap    107   free    13.7G
> metaslab     76   offset  26000000000   spacemap    122   free    14.0G
> metaslab     77   offset  26800000000   spacemap    125   free    15.1G
> metaslab     78   offset  27000000000   spacemap    130   free    14.1G
> metaslab     79   offset  27800000000   spacemap    136   free    13.3G
> metaslab     80   offset  28000000000   spacemap    137   free    13.1G
> metaslab     81   offset  28800000000   spacemap    139   free    12.6G
> metaslab     82   offset  29000000000   spacemap    104   free    11.8G
> metaslab     83   offset  29800000000   spacemap    118   free    12.9G
> metaslab     84   offset  2a000000000   spacemap    119   free    11.3G
> metaslab     85   offset  2a800000000   spacemap    121   free    13.7G
> metaslab     86   offset  2b000000000   spacemap    126   free    14.2G
> metaslab     87   offset  2b800000000   spacemap    129   free    13.9G
> metaslab     88   offset  2c000000000   spacemap    143   free    14.9G
> metaslab     89   offset  2c800000000   spacemap    142   free    15.0G
> metaslab     90   offset  2d000000000   spacemap    145   free    14.4G
> metaslab     91   offset  2d800000000   spacemap    148   free    14.1G
> metaslab     92   offset  2e000000000   spacemap    124   free    12.1G
> metaslab     93   offset  2e800000000   spacemap    128   free    11.7G
> metaslab     94   offset  2f000000000   spacemap    131   free    13.0G
> metaslab     95   offset  2f800000000   spacemap    132   free    11.5G
> metaslab     96   offset  30000000000   spacemap    133   free    11.9G
> metaslab     97   offset  30800000000   spacemap    134   free    14.6G
> metaslab     98   offset  31000000000   spacemap    116   free    14.7G
> metaslab     99   offset  31800000000   spacemap    152   free    11.9G
> metaslab    100   offset  32000000000   spacemap    153   free    13.0G
> metaslab    101   offset  32800000000   spacemap    154   free    13.3G
> metaslab    102   offset  33000000000   spacemap    157   free    13.9G
> metaslab    103   offset  33800000000   spacemap    138   free    12.1G
> metaslab    104   offset  34000000000   spacemap     23   free    10.1G
> metaslab    105   offset  34800000000   spacemap    161   free    15.0G
> metaslab    106   offset  35000000000   spacemap    160   free    13.8G
> metaslab    107   offset  35800000000   spacemap    117   free    9.91G
> metaslab    108   offset  36000000000   spacemap    162   free    15.4G
> metaslab    109   offset  36800000000   spacemap    151   free    15.2G
> metaslab    110   offset  37000000000   spacemap    165   free    13.9G
> metaslab    111   offset  37800000000   spacemap    167   free    13.7G
> metaslab    112   offset  38000000000   spacemap    144   free    11.7G
> metaslab    113   offset  38800000000   spacemap    147   free    11.1G
> metaslab    114   offset  39000000000   spacemap    172   free    15.3G
> metaslab    115   offset  39800000000   spacemap    170   free    15.3G
>
>
>
> zdb -mm:
>
> Metaslabs:
> vdev          0
> metaslabs   116   offset                spacemap          free
> ---------------   -------------------   ---------------   -------------
> metaslab      0   offset            0   spacemap     37   free    9.87G
> On-disk histogram:            fragmentation 75
>   9:  13174 *****
> 10:  32653 ***********
> 11:  62686 *********************
> 12:  95453 *******************************
> 13: 124368 ****************************************
> 14: 119777 ***************************************
> 15:  89817 *****************************
> 16:  21219 *******
> metaslab      1   offset    800000000   spacemap     38   free    10.1G
> On-disk histogram:            fragmentation 74
>   9:  12055 *****
> 10:  31439 ***********
> 11:  58088 ********************
> 12:  90270 *******************************
> 13: 115676 ****************************************
> 14: 116764 ****************************************
> 15:  95460 *********************************
> 16:  23325 ********
> metaslab      2   offset   1000000000   spacemap     44   free    11.5G
> On-disk histogram:            fragmentation 74
>   9:  10775 ****
> 10:  26238 ********
> 11:  55540 *****************
> 12:  91773 ****************************
> 13: 130495 ****************************************
> 14: 133621 ****************************************
> 15: 109230 *********************************
> 16:  26966 *********
> metaslab      3   offset   1800000000   spacemap     45   free    12.1G
> On-disk histogram:            fragmentation 74
>   9:  10640 ***
> 10:  26684 ********
> 11:  53533 ***************
> 12:  98807 ****************************
> 13: 137917 **************************************
> 14: 146352 ****************************************
> 15: 114989 ********************************
> 16:  27192 ********
> metaslab      4   offset   2000000000   spacemap     50   free    10.4G
> On-disk histogram:            fragmentation 72
>   9:   6958 ***
> 10:  16715 ******
> 11:  40935 ***************
> 12:  66596 ************************
> 13:  97728 ************************************
> 14: 111676 ****************************************
> 15: 100326 ************************************
> 16:  30281 ***********
> metaslab      5   offset   2800000000   spacemap     55   free    9.59G
> On-disk histogram:            fragmentation 73
>   9:   7245 ***
> 10:  16175 ******
> 11:  35798 *************
> 12:  64432 ***********************
> 13:  96726 **********************************
> 14: 114297 ****************************************
> 15:  91499 *********************************
> 16:  24663 *********
> metaslab      6   offset   3000000000   spacemap     56   free    9.43G
> On-disk histogram:            fragmentation 73
>   9:  10360 ****
> 10:  20966 ********
> 11:  47237 ******************
> 12:  72475 ***************************
> 13: 102976 **************************************
> 14: 108624 ****************************************
> 15:  88680 *********************************
> 16:  24020 *********
> metaslab      7   offset   3800000000   spacemap     59   free    10.9G
> On-disk histogram:            fragmentation 73
>   9:   7367 ***
> 10:  15933 ******
> 11:  39343 **************
> 12:  71022 *************************
> 13: 103930 ************************************
> 14: 118333 ****************************************
> 15: 106197 ************************************
> 16:  30311 ***********
> metaslab      8   offset   4000000000   spacemap     60   free    10.6G
> On-disk histogram:            fragmentation 74
>   9:   8270 ***
> 10:  19393 *******
> 11:  49098 ****************
> 12:  79883 **************************
> 13: 116205 **************************************
> 14: 124497 ****************************************
> 15: 100560 *********************************
> 16:  25870 *********
> metaslab      9   offset   4800000000   spacemap     64   free    10.3G
> On-disk histogram:            fragmentation 74
>   9:   9953 ****
> 10:  22662 ********
> 11:  50282 ****************
> 12:  81781 **************************
> 13: 123838 ***************************************
> 14: 127722 ****************************************
> 15:  97140 *******************************
> 16:  22914 ********
> 17:      6 *
> 18:      1 *
> metaslab     10   offset   5000000000   spacemap     65   free    11.3G
> On-disk histogram:            fragmentation 72
>   9:   6633 ***
> 10:  15542 ******
> 11:  35587 ************
> 12:  69217 ***********************
> 13: 106333 ***********************************
> 14: 121761 ****************************************
> 15: 110515 *************************************
> 16:  32481 ***********
> metaslab     11   offset   5800000000   spacemap     69   free    13.7G
> On-disk histogram:            fragmentation 73
>   9:  10309 ***
> 10:  21862 ******
> 11:  48730 *************
> 12:  91451 ***********************
> 13: 141148 ************************************
> 14: 159748 ****************************************
> 15: 132495 **********************************
> 16:  34599 *********
> metaslab     12   offset   6000000000   spacemap     70   free    12.6G
> On-disk histogram:            fragmentation 73
>   9:  10405 ***
> 10:  21461 ******
> 11:  47039 **************
> 12:  81718 ***********************
> 13: 132978 **************************************
> 14: 143575 ****************************************
> 15: 118249 *********************************
> 16:  34682 **********
> metaslab     13   offset   6800000000   spacemap     74   free    12.7G
> On-disk histogram:            fragmentation 74
>   9:  16569 *****
> 10:  27477 ********
> 11:  58073 ****************
> 12:  94456 **************************
> 13: 142618 ***************************************
> 14: 147525 ****************************************
> 15: 119759 *********************************
> 16:  31852 *********
> metaslab     14   offset   7000000000   spacemap     41   free    13.3G
> On-disk histogram:            fragmentation 73
>   9:  10231 ***
> 10:  21918 ******
> 11:  50458 *************
> 12:  86298 ***********************
> 13: 138467 ************************************
> 14: 155560 ****************************************
> 15: 127711 *********************************
> 16:  34694 *********
> metaslab     15   offset   7800000000   spacemap     46   free    12.3G
> On-disk histogram:            fragmentation 73
>   9:  11958 ****
> 10:  23355 *******
> 11:  50492 ***************
> 12:  77737 **********************
> 13: 136103 ***************************************
> 14: 142483 ****************************************
> 15: 117808 **********************************
> 16:  30965 *********
> 17:     47 *
> 18:      1 *
> metaslab     16   offset   8000000000   spacemap     52   free    11.6G
> On-disk histogram:            fragmentation 72
>   9:   7651 ***
> 10:  17480 ******
> 11:  41791 **************
> 12:  68635 **********************
> 13: 105255 **********************************
> 14: 126184 ****************************************
> 15: 112716 ************************************
> 16:  33888 ***********
> metaslab     17   offset   8800000000   spacemap     61   free    10.8G
> On-disk histogram:            fragmentation 74
>   9:   9885 ****
> 10:  19543 *******
> 11:  47506 ***************
> 12:  73619 ***********************
> 13: 120938 **************************************
> 14: 129236 ****************************************
> 15: 103754 *********************************
> 16:  26017 *********
> metaslab     18   offset   9000000000   spacemap     66   free    10.4G
> On-disk histogram:            fragmentation 74
>   9:  10523 ****
> 10:  20808 *******
> 11:  48077 ****************
> 12:  81940 **************************
> 13: 115660 *************************************
> 14: 127985 ****************************************
> 15:  99451 ********************************
> 16:  22367 *******
> metaslab     19   offset   9800000000   spacemap     71   free    11.5G
> On-disk histogram:            fragmentation 73
>   9:  10306 ****
> 10:  20365 ******
> 11:  47675 ***************
> 12:  77698 ***********************
> 13: 118794 ***********************************
> 14: 135798 ****************************************
> 15: 112013 *********************************
> 16:  28224 *********
> metaslab     20   offset   a000000000   spacemap     75   free    11.8G
> On-disk histogram:            fragmentation 73
>   9:   9319 ***
> 10:  19109 ******
> 11:  44950 ***************
> 12:  74165 ************************
> 13: 111560 ***********************************
> 14: 127624 ****************************************
> 15: 117499 *************************************
> 16:  32937 ***********
> metaslab     21   offset   a800000000   spacemap     79   free    11.5G
> On-disk histogram:            fragmentation 73
>   9:   9000 ***
> 10:  20281 *******
> 11:  44687 **************
> 12:  78491 *************************
> 13: 112355 ***********************************
> 14: 128648 ****************************************
> 15: 113606 ************************************
> 16:  30107 **********
> metaslab     22   offset   b000000000   spacemap     36   free    13.0G
> On-disk histogram:            fragmentation 74
>   9:  17592 *****
> 10:  32019 *********
> 11:  67936 ******************
> 12: 103293 ***************************
> 13: 155536 ****************************************
> 14: 158412 ****************************************
> 15: 120472 *******************************
> 16:  29700 ********
> metaslab     23   offset   b800000000   spacemap     80   free    12.1G
> On-disk histogram:            fragmentation 73
>   9:  11039 ****
> 10:  24500 ********
> 11:  54179 ****************
> 12:  88300 **************************
> 13: 123101 *************************************
> 14: 136410 ****************************************
> 15: 117935 ***********************************
> 16:  30167 *********
> metaslab     24   offset   c000000000   spacemap     43   free    13.1G
> On-disk histogram:            fragmentation 72
>   9:   8882 ***
> 10:  19696 ******
> 11:  41097 ************
> 12:  79725 **********************
> 13: 117767 *********************************
> 14: 145121 ****************************************
> 15: 130990 *************************************
> 16:  36655 ***********
> 17:      1 *
> metaslab     25   offset   c800000000   spacemap     82   free    12.9G
> On-disk histogram:            fragmentation 72
>   9:   8869 ***
> 10:  19587 ******
> 11:  43390 *************
> 12:  79084 ***********************
> 13: 116036 *********************************
> 14: 141197 ****************************************
> 15: 124298 ************************************
> 16:  37508 ***********
> 17:      2 *
> 18:      1 *
> metaslab     26   offset   d000000000   spacemap     83   free    13.4G
> On-disk histogram:            fragmentation 73
>   9:  11307 ***
> 10:  21670 ******
> 11:  53193 **************
> 12:  90095 ************************
> 13: 137751 *************************************
> 14: 152128 ****************************************
> 15: 127481 **********************************
> 16:  36210 **********
> metaslab     27   offset   d800000000   spacemap     54   free    10.9G
> On-disk histogram:            fragmentation 73
>   9:  11098 ****
> 10:  20845 *******
> 11:  45963 ***************
> 12:  75004 *************************
> 13: 107499 ***********************************
> 14: 123328 ****************************************
> 15: 105092 ***********************************
> 16:  29347 **********
> metaslab     28   offset   e000000000   spacemap     86   free    12.0G
> On-disk histogram:            fragmentation 73
>   9:   9164 ***
> 10:  19743 ******
> 11:  44292 **************
> 12:  77952 ************************
> 13: 110850 **********************************
> 14: 132337 ****************************************
> 15: 117774 ************************************
> 16:  33073 **********
> metaslab     29   offset   e800000000   spacemap     58   free    11.3G
> On-disk histogram:            fragmentation 73
>   9:   9714 ****
> 10:  20569 *******
> 11:  44121 ***************
> 12:  74037 ************************
> 13: 109387 ************************************
> 14: 123560 ****************************************
> 15: 109329 ************************************
> 16:  32293 ***********
> metaslab     30   offset   f000000000   spacemap     89   free    10.3G
> On-disk histogram:            fragmentation 74
>   9:  10402 ****
> 10:  23233 ********
> 11:  49501 ****************
> 12:  83092 ***************************
> 13: 113686 *************************************
> 14: 124442 ****************************************
> 15:  98607 ********************************
> 16:  22337 ********
> metaslab     31   offset   f800000000   spacemap     63   free    11.9G
> On-disk histogram:            fragmentation 73
>   9:   9932 ***
> 10:  19814 ******
> 11:  48311 ***************
> 12:  81260 *************************
> 13: 116202 ***********************************
> 14: 133373 ****************************************
> 15: 115163 ***********************************
> 16:  32133 **********
> metaslab     32   offset  10000000000   spacemap     90   free    10.4G
> On-disk histogram:            fragmentation 73
>   9:   9497 ****
> 10:  21028 ********
> 11:  45706 ****************
> 12:  77345 **************************
> 13: 104832 ***********************************
> 14: 120142 ****************************************
> 15:  99456 **********************************
> 16:  26469 *********
> metaslab     33   offset  10800000000   spacemap     68   free    12.5G
> On-disk histogram:            fragmentation 73
>   9:   9903 ***
> 10:  22002 ******
> 11:  48212 **************
> 12:  92276 **************************
> 13: 130495 ************************************
> 14: 146855 ****************************************
> 15: 122252 **********************************
> 16:  29250 ********
> 17:      7 *
> 18:      1 *
> metaslab     34   offset  11000000000   spacemap     91   free    11.7G
> On-disk histogram:            fragmentation 72
>   9:  10092 ****
> 10:  22729 ********
> 11:  49220 ****************
> 12:  75651 *************************
> 13: 111637 ************************************
> 14: 125358 ****************************************
> 15: 112050 ************************************
> 16:  34342 ***********
> metaslab     35   offset  11800000000   spacemap     73   free    12.1G
> On-disk histogram:            fragmentation 73
>   9:  10657 ****
> 10:  23308 *******
> 11:  49686 ***************
> 12:  82819 *************************
> 13: 119813 ************************************
> 14: 135109 ****************************************
> 15: 115614 ***********************************
> 16:  32863 **********
> metaslab     36   offset  12000000000   spacemap     39   free    11.1G
> On-disk histogram:            fragmentation 74
>   9:  11006 ****
> 10:  22056 *******
> 11:  55963 *****************
> 12:  92581 ****************************
> 13: 128809 ***************************************
> 14: 135211 ****************************************
> 15: 102552 *******************************
> 16:  25456 ********
> metaslab     37   offset  12800000000   spacemap     94   free    11.7G
> On-disk histogram:            fragmentation 73
>   9:  13021 ****
> 10:  26269 ********
> 11:  54671 *****************
> 12:  84526 **************************
> 13: 118437 ************************************
> 14: 132371 ****************************************
> 15: 112247 **********************************
> 16:  31000 **********
> metaslab     38   offset  13000000000   spacemap     51   free    12.5G
> On-disk histogram:            fragmentation 74
>   9:  14841 *****
> 10:  29009 ********
> 11:  63309 ******************
> 12:  98363 ***************************
> 13: 139252 ***************************************
> 14: 146557 ****************************************
> 15: 118698 *********************************
> 16:  30412 *********
> metaslab     39   offset  13800000000   spacemap     95   free    11.8G
> On-disk histogram:            fragmentation 73
>   9:  16495 *****
> 10:  32485 **********
> 11:  61382 *******************
> 12:  82975 *************************
> 13: 129931 ***************************************
> 14: 135239 ****************************************
> 15: 111028 *********************************
> 16:  30635 **********
> metaslab     40   offset  14000000000   spacemap     97   free    12.2G
> On-disk histogram:            fragmentation 73
>   9:  11097 ****
> 10:  23175 *******
> 11:  54013 ****************
> 12:  85389 **************************
> 13: 124470 *************************************
> 14: 135547 ****************************************
> 15: 114353 **********************************
> 16:  34123 ***********
> metaslab     41   offset  14800000000   spacemap     48   free    12.2G
> On-disk histogram:            fragmentation 72
>   9:   8054 ***
> 10:  16712 ******
> 11:  39595 *************
> 12:  71037 ***********************
> 13: 106596 ***********************************
> 14: 124410 ****************************************
> 15: 117196 **************************************
> 16:  39111 *************
> metaslab     42   offset  15000000000   spacemap     76   free    12.6G
> On-disk histogram:            fragmentation 72
>   9:   9236 ***
> 10:  17995 ******
> 11:  38638 ************
> 12:  65711 ********************
> 13: 109356 *********************************
> 14: 135921 ****************************************
> 15: 124452 *************************************
> 16:  37113 ***********
> metaslab     43   offset  15800000000   spacemap     78   free    11.6G
> On-disk histogram:            fragmentation 73
>   9:  10513 ****
> 10:  20182 *******
> 11:  50855 ****************
> 12:  84262 **************************
> 13: 121359 *************************************
> 14: 133155 ****************************************
> 15: 110658 **********************************
> 16:  30301 **********
> metaslab     44   offset  16000000000   spacemap     35   free    11.7G
> On-disk histogram:            fragmentation 73
>   9:   9411 ***
> 10:  18551 ******
> 11:  47650 ***************
> 12:  83483 **************************
> 13: 118610 *************************************
> 14: 130574 ****************************************
> 15: 107562 *********************************
> 16:  34202 ***********
> metaslab     45   offset  16800000000   spacemap     85   free    11.5G
> On-disk histogram:            fragmentation 74
>   9:  10887 ****
> 10:  24724 *******
> 11:  53825 ****************
> 12:  89869 **************************
> 13: 128382 *************************************
> 14: 142511 ****************************************
> 15: 109992 *******************************
> 16:  25279 ********
> metaslab     46   offset  17000000000   spacemap     42   free    10.7G
> On-disk histogram:            fragmentation 73
>   9:   8256 ***
> 10:  21773 ********
> 11:  49778 *****************
> 12:  80378 ***************************
> 13: 113149 **************************************
> 14: 121712 ****************************************
> 15: 101266 **********************************
> 16:  28276 **********
> metaslab     47   offset  17800000000   spacemap     81   free    14.9G
> On-disk histogram:            fragmentation 73
>   9:  11271 ***
> 10:  24216 ******
> 11:  56488 **************
> 12:  95744 ************************
> 13: 149315 *************************************
> 14: 163990 ****************************************
> 15: 141771 ***********************************
> 16:  41760 ***********
> 17:      8 *
> metaslab     48   offset  18000000000   spacemap     98   free    12.2G
> On-disk histogram:            fragmentation 72
>   9:   9584 ***
> 10:  21297 *******
> 11:  47127 ***************
> 12:  78091 *************************
> 13: 113006 ***********************************
> 14: 129183 ****************************************
> 15: 118745 *************************************
> 16:  35640 ************
> 17:     13 *
> metaslab     49   offset  18800000000   spacemap    100   free    11.9G
> On-disk histogram:            fragmentation 73
>   9:  10491 ***
> 10:  23009 *******
> 11:  49837 ***************
> 12:  82060 ************************
> 13: 117911 **********************************
> 14: 140302 ****************************************
> 15: 115574 *********************************
> 16:  29124 *********
> metaslab     50   offset  19000000000   spacemap    102   free    12.3G
> On-disk histogram:            fragmentation 73
>   9:  10489 ****
> 10:  20905 *******
> 11:  46595 **************
> 12:  84287 *************************
> 13: 119446 ***********************************
> 14: 136643 ****************************************
> 15: 119817 ************************************
> 16:  33689 **********
> metaslab     51   offset  19800000000   spacemap     57   free    14.0G
> On-disk histogram:            fragmentation 72
>   9:   8585 ***
> 10:  19030 *****
> 11:  42421 ***********
> 12:  79795 *********************
> 13: 129136 **********************************
> 14: 154329 ****************************************
> 15: 136493 ************************************
> 16:  40371 ***********
> 17:      2 *
> metaslab     52   offset  1a000000000   spacemap     88   free    12.5G
> On-disk histogram:            fragmentation 73
>   9:  10980 ****
> 10:  26430 ********
> 11:  59050 *****************
> 12:  92467 **************************
> 13: 128738 *************************************
> 14: 142665 ****************************************
> 15: 120435 **********************************
> 16:  30975 *********
> metaslab     53   offset  1a800000000   spacemap     62   free    12.4G
> On-disk histogram:            fragmentation 72
>   9:   8269 ***
> 10:  16459 *****
> 11:  35145 ***********
> 12:  71966 **********************
> 13: 107882 *********************************
> 14: 133050 ****************************************
> 15: 122984 *************************************
> 16:  36961 ************
> metaslab     54   offset  1b000000000   spacemap     84   free    11.7G
> On-disk histogram:            fragmentation 73
>   9:   9843 ****
> 10:  19530 *******
> 11:  49057 ****************
> 12:  75135 ************************
> 13: 115638 ************************************
> 14: 129604 ****************************************
> 15: 113652 ************************************
> 16:  31891 **********
> metaslab     55   offset  1b800000000   spacemap     67   free    11.3G
> On-disk histogram:            fragmentation 74
>   9:  20391 ******
> 10:  32321 **********
> 11:  77029 **********************
> 12:  96316 ****************************
> 13:  99689 ****************************
> 14: 142457 ****************************************
> 15: 109960 *******************************
> 16:  24413 *******
> metaslab     56   offset  1c000000000   spacemap    101   free    11.4G
> On-disk histogram:            fragmentation 74
>   9:  10825 ****
> 10:  19775 ******
> 11:  52269 ****************
> 12:  85592 **************************
> 13: 126202 *************************************
> 14: 136841 ****************************************
> 15: 108839 ********************************
> 16:  26106 ********
> metaslab     57   offset  1c800000000   spacemap     72   free    13.8G
> On-disk histogram:            fragmentation 74
>   9:  11566 ***
> 10:  24117 ******
> 11:  60055 ***************
> 12: 100416 *************************
> 13: 145171 ************************************
> 14: 162883 ****************************************
> 15: 133892 *********************************
> 16:  32458 ********
> metaslab     58   offset  1d000000000   spacemap    103   free    12.7G
> On-disk histogram:            fragmentation 73
>   9:  11326 ****
> 10:  20937 ******
> 11:  53211 ***************
> 12:  84460 ************************
> 13: 124940 ************************************
> 14: 142246 ****************************************
> 15: 124069 ***********************************
> 16:  33806 **********
> metaslab     59   offset  1d800000000   spacemap     93   free    13.8G
> On-disk histogram:            fragmentation 73
>   9:  12593 ****
> 10:  25231 *******
> 11:  54254 **************
> 12:  92336 ***********************
> 13: 137294 **********************************
> 14: 163287 ****************************************
> 15: 135029 **********************************
> 16:  33669 *********
> metaslab     60   offset  1e000000000   spacemap     49   free    12.3G
> On-disk histogram:            fragmentation 73
>   9:   9431 ***
> 10:  20206 ******
> 11:  49675 ***************
> 12:  80285 ************************
> 13: 118527 ***********************************
> 14: 137940 ****************************************
> 15: 118988 ***********************************
> 16:  33230 **********
> metaslab     61   offset  1e800000000   spacemap    105   free    11.0G
> On-disk histogram:            fragmentation 74
>   9:  10884 ****
> 10:  21308 *******
> 11:  52547 ****************
> 12:  91701 ***************************
> 13: 131214 **************************************
> 14: 138172 ****************************************
> 15: 101868 ******************************
> 16:  23138 *******
> metaslab     62   offset  1f000000000   spacemap     96   free    11.2G
> On-disk histogram:            fragmentation 73
>   9:   9365 ****
> 10:  17273 ******
> 11:  44032 ***************
> 12:  75602 *************************
> 13: 110296 ************************************
> 14: 124096 ****************************************
> 15: 107382 ***********************************
> 16:  30894 **********
> 17:      2 *
> metaslab     63   offset  1f800000000   spacemap     47   free    14.6G
> On-disk histogram:            fragmentation 73
>   9:  10351 ***
> 10:  23186 ******
> 11:  59652 ***************
> 12: 103459 **************************
> 13: 147786 ************************************
> 14: 165388 ****************************************
> 15: 140711 ***********************************
> 16:  37980 **********
> metaslab     64   offset  20000000000   spacemap    106   free    13.9G
> On-disk histogram:            fragmentation 73
>   9:  10614 ***
> 10:  21474 ******
> 11:  51221 **************
> 12:  88752 ************************
> 13: 130790 ***********************************
> 14: 153328 ****************************************
> 15: 135834 ************************************
> 16:  38098 **********
> 17:     82 *
> 18:      2 *
> metaslab     65   offset  20800000000   spacemap     77   free    14.2G
> On-disk histogram:            fragmentation 73
>   9:  10719 ***
> 10:  23051 *******
> 11:  52012 **************
> 12:  87342 ***********************
> 13: 136662 ************************************
> 14: 153115 ****************************************
> 15: 140510 *************************************
> 16:  39959 ***********
> metaslab     66   offset  21000000000   spacemap    110   free    13.1G
> On-disk histogram:            fragmentation 72
>   9:   8005 ***
> 10:  17741 ******
> 11:  40230 ************
> 12:  75317 **********************
> 13: 112948 *********************************
> 14: 139746 ****************************************
> 15: 128894 *************************************
> 16:  39318 ************
> metaslab     67   offset  21800000000   spacemap    112   free    10.6G
> On-disk histogram:            fragmentation 73
>   9:  13493 *****
> 10:  20967 *******
> 11:  51796 *****************
> 12:  65197 **********************
> 13:  95826 ********************************
> 14: 123148 ****************************************
> 15: 105061 ***********************************
> 16:  27531 *********
> metaslab     68   offset  22000000000   spacemap     53   free    12.6G
> On-disk histogram:            fragmentation 73
>   9:  11594 ****
> 10:  24092 *******
> 11:  56593 ****************
> 12:  96433 ***************************
> 13: 131303 *************************************
> 14: 144576 ****************************************
> 15: 121752 **********************************
> 16:  31425 *********
> metaslab     69   offset  22800000000   spacemap    113   free    10.8G
> On-disk histogram:            fragmentation 74
>   9:  10140 ****
> 10:  21508 *******
> 11:  50661 ****************
> 12:  80798 *************************
> 13: 117148 *************************************
> 14: 129816 ****************************************
> 15: 104483 *********************************
> 16:  25157 ********
> metaslab     70   offset  23000000000   spacemap     92   free    13.9G
> On-disk histogram:            fragmentation 72
>   9:   9925 ***
> 10:  21207 ******
> 11:  47159 *************
> 12:  82540 ***********************
> 13: 122871 *********************************
> 14: 149303 ****************************************
> 15: 136095 *************************************
> 16:  40884 ***********
> 17:      1 *
> metaslab     71   offset  23800000000   spacemap     99   free    13.4G
> On-disk histogram:            fragmentation 73
>   9:  10446 ***
> 10:  22940 ******
> 11:  51083 **************
> 12:  91557 ************************
> 13: 129346 **********************************
> 14: 153344 ****************************************
> 15: 131632 ***********************************
> 16:  35085 **********
> metaslab     72   offset  24000000000   spacemap    120   free    14.3G
> On-disk histogram:            fragmentation 73
>   9:  10522 ***
> 10:  21548 ******
> 11:  53389 **************
> 12:  92703 ************************
> 13: 136960 ***********************************
> 14: 159877 ****************************************
> 15: 138586 ***********************************
> 16:  38682 **********
> metaslab     73   offset  24800000000   spacemap    109   free    14.1G
> On-disk histogram:            fragmentation 73
>   9:  10378 ***
> 10:  23310 ******
> 11:  49945 *************
> 12:  89985 ************************
> 13: 126979 *********************************
> 14: 155966 ****************************************
> 15: 141423 *************************************
> 16:  37676 **********
> metaslab     74   offset  25000000000   spacemap     87   free    13.3G
> On-disk histogram:            fragmentation 73
>   9:  10438 ***
> 10:  23141 *******
> 11:  53506 ***************
> 12:  92690 **************************
> 13: 126818 ************************************
> 14: 144625 ****************************************
> 15: 126677 ************************************
> 16:  37660 ***********
> metaslab     75   offset  25800000000   spacemap    107   free    13.7G
> On-disk histogram:            fragmentation 73
>   9:  11526 ****
> 10:  24159 *******
> 11:  58237 ****************
> 12:  99582 **************************
> 13: 137275 ************************************
> 14: 153272 ****************************************
> 15: 130510 ***********************************
> 16:  36956 **********
> metaslab     76   offset  26000000000   spacemap    122   free    14.0G
> On-disk histogram:            fragmentation 72
>   9:   9336 ***
> 10:  20812 ******
> 11:  44475 ************
> 12:  80752 **********************
> 13: 121301 ********************************
> 14: 152343 ****************************************
> 15: 139474 *************************************
> 16:  40079 ***********
> 17:     41 *
> metaslab     77   offset  26800000000   spacemap    125   free    15.1G
> On-disk histogram:            fragmentation 72
>   9:  13586 ****
> 10:  24631 *******
> 11:  47492 ************
> 12:  83587 **********************
> 13: 134154 **********************************
> 14: 158811 ****************************************
> 15: 149127 **************************************
> 16:  44928 ************
> metaslab     78   offset  27000000000   spacemap    130   free    14.1G
> On-disk histogram:            fragmentation 72
>   9:  10330 ***
> 10:  21196 ******
> 11:  49410 *************
> 12:  88554 ***********************
> 13: 128709 **********************************
> 14: 154039 ****************************************
> 15: 141630 *************************************
> 16:  38840 ***********
> metaslab     79   offset  27800000000   spacemap    136   free    13.3G
> On-disk histogram:            fragmentation 73
>   9:   9850 ***
> 10:  21933 ******
> 11:  46990 *************
> 12:  92822 ************************
> 13: 129242 **********************************
> 14: 154976 ****************************************
> 15: 129716 **********************************
> 16:  33463 *********
> metaslab     80   offset  28000000000   spacemap    137   free    13.1G
> On-disk histogram:            fragmentation 73
>   9:  12916 ****
> 10:  24850 *******
> 11:  52701 ***************
> 12:  89410 *************************
> 13: 126951 ***********************************
> 14: 146946 ****************************************
> 15: 125090 ***********************************
> 16:  35994 **********
> metaslab     81   offset  28800000000   spacemap    139   free    12.6G
> On-disk histogram:            fragmentation 73
>   9:   9614 ***
> 10:  22117 *******
> 11:  50726 ***************
> 12:  88537 **************************
> 13: 123146 ************************************
> 14: 138052 ****************************************
> 15: 119549 ***********************************
> 16:  35485 ***********
> metaslab     82   offset  29000000000   spacemap    104   free    11.8G
> On-disk histogram:            fragmentation 74
>   9:  12539 ****
> 10:  25377 ********
> 11:  51290 ***************
> 12:  90591 ***************************
> 13: 121578 ************************************
> 14: 137296 ****************************************
> 15: 119204 ***********************************
> 16:  26523 ********
> metaslab     83   offset  29800000000   spacemap    118   free    12.9G
> On-disk histogram:            fragmentation 73
>   9:  10471 ****
> 10:  21005 *******
> 11:  50752 ***************
> 12:  85057 *************************
> 13: 125911 *************************************
> 14: 137652 ****************************************
> 15: 125923 *************************************
> 16:  35759 ***********
> metaslab     84   offset  2a000000000   spacemap    119   free    11.3G
> On-disk histogram:            fragmentation 73
>   9:  10569 ****
> 10:  19771 *******
> 11:  44624 ***************
> 12:  76836 *************************
> 13: 108777 ***********************************
> 14: 126829 ****************************************
> 15: 111722 ************************************
> 16:  29433 **********
> metaslab     85   offset  2a800000000   spacemap    121   free    13.7G
> On-disk histogram:            fragmentation 72
>   9:   9179 ***
> 10:  20149 ******
> 11:  50158 **************
> 12:  87847 *************************
> 13: 124476 ***********************************
> 14: 144075 ****************************************
> 15: 134617 **************************************
> 16:  40135 ************
> metaslab     86   offset  2b000000000   spacemap    126   free    14.2G
> On-disk histogram:            fragmentation 72
>   9:   9034 ***
> 10:  21125 ******
> 11:  51810 **************
> 12:  90612 *************************
> 13: 130387 ***********************************
> 14: 149592 ****************************************
> 15: 140393 **************************************
> 16:  40074 ***********
> metaslab     87   offset  2b800000000   spacemap    129   free    13.9G
> On-disk histogram:            fragmentation 72
>   9:   9201 ***
> 10:  21903 ******
> 11:  52002 **************
> 12:  86409 ************************
> 13: 129292 ***********************************
> 14: 148629 ****************************************
> 15: 137196 *************************************
> 16:  39369 ***********
> 17:      8 *
> metaslab     88   offset  2c000000000   spacemap    143   free    14.9G
> On-disk histogram:            fragmentation 73
>   9:  11980 ***
> 10:  25194 *******
> 11:  60975 ***************
> 12: 102582 *************************
> 13: 155095 **************************************
> 14: 167403 ****************************************
> 15: 145570 ***********************************
> 16:  37784 **********
> 17:     16 *
> 18:      1 *
> metaslab     89   offset  2c800000000   spacemap    142   free    15.0G
> On-disk histogram:            fragmentation 72
>   9:   8405 ***
> 10:  17147 *****
> 11:  41296 ***********
> 12:  81624 **********************
> 13: 122303 *********************************
> 14: 152280 ****************************************
> 15: 149419 ****************************************
> 16:  47531 *************
> 17:      1 *
> metaslab     90   offset  2d000000000   spacemap    145   free    14.4G
> On-disk histogram:            fragmentation 73
>   9:  10589 ***
> 10:  23981 *******
> 11:  55356 ***************
> 12:  99633 **************************
> 13: 138774 ************************************
> 14: 158089 ****************************************
> 15: 144974 *************************************
> 16:  36373 **********
> 17:      3 *
> metaslab     91   offset  2d800000000   spacemap    148   free    14.1G
> On-disk histogram:            fragmentation 73
>   9:  10915 ***
> 10:  24446 *******
> 11:  57241 ***************
> 12: 100015 **************************
> 13: 141946 ************************************
> 14: 157724 ****************************************
> 15: 137228 ***********************************
> 16:  36128 **********
> metaslab     92   offset  2e000000000   spacemap    124   free    12.1G
> On-disk histogram:            fragmentation 73
>   9:   9277 ***
> 10:  21639 *******
> 11:  46077 **************
> 12:  82528 ************************
> 13: 121810 ***********************************
> 14: 141567 ****************************************
> 15: 115712 *********************************
> 16:  31941 **********
> metaslab     93   offset  2e800000000   spacemap    128   free    11.7G
> On-disk histogram:            fragmentation 73
>   9:  10436 ****
> 10:  19390 ******
> 11:  47479 ***************
> 12:  85507 ***************************
> 13: 120299 *************************************
> 14: 131471 ****************************************
> 15: 110561 **********************************
> 16:  31464 **********
> metaslab     94   offset  2f000000000   spacemap    131   free    13.0G
> On-disk histogram:            fragmentation 73
>   9:  11282 ****
> 10:  21424 *******
> 11:  54327 ****************
> 12:  91629 ***************************
> 13: 129122 **************************************
> 14: 137868 ****************************************
> 15: 124196 *************************************
> 16:  37008 ***********
> 17:      6 *
> metaslab     95   offset  2f800000000   spacemap    132   free    11.5G
> On-disk histogram:            fragmentation 73
>   9:  10640 ****
> 10:  19047 ******
> 11:  46475 ***************
> 12:  83191 **************************
> 13: 116216 *************************************
> 14: 128549 ****************************************
> 15: 109031 **********************************
> 16:  31129 **********
> metaslab     96   offset  30000000000   spacemap    133   free    11.9G
> On-disk histogram:            fragmentation 73
>   9:   8780 ***
> 10:  20607 *******
> 11:  45472 **************
> 12:  86559 **************************
> 13: 119702 ************************************
> 14: 134300 ****************************************
> 15: 113475 **********************************
> 16:  31584 **********
> metaslab     97   offset  30800000000   spacemap    134   free    14.6G
> On-disk histogram:            fragmentation 73
>   9:  11111 ***
> 10:  24041 ******
> 11:  55360 **************
> 12: 101229 *************************
> 13: 143445 ***********************************
> 14: 167815 ****************************************
> 15: 139622 **********************************
> 16:  39154 **********
> 17:      1 *
> metaslab     98   offset  31000000000   spacemap    116   free    14.7G
> On-disk histogram:            fragmentation 72
>   9:  10292 ***
> 10:  21817 ******
> 11:  52760 **************
> 12:  91257 ************************
> 13: 133384 ***********************************
> 14: 155407 ****************************************
> 15: 144634 **************************************
> 16:  42630 ***********
> 17:      7 *
> metaslab     99   offset  31800000000   spacemap    152   free    11.9G
> On-disk histogram:            fragmentation 74
>   9:  12661 ****
> 10:  22191 *******
> 11:  55325 ****************
> 12: 103698 *****************************
> 13: 140831 ***************************************
> 14: 146932 ****************************************
> 15: 114001 ********************************
> 16:  24406 *******
> metaslab    100   offset  32000000000   spacemap    153   free    13.0G
> On-disk histogram:            fragmentation 73
>   9:  11865 ****
> 10:  23911 *******
> 11:  50571 ***************
> 12:  85897 *************************
> 13: 126000 ************************************
> 14: 142585 ****************************************
> 15: 128000 ************************************
> 16:  35626 **********
> metaslab    101   offset  32800000000   spacemap    154   free    13.3G
> On-disk histogram:            fragmentation 73
>   9:  10575 ***
> 10:  21858 ******
> 11:  48618 **************
> 12:  89886 *************************
> 13: 129845 ***********************************
> 14: 148470 ****************************************
> 15: 131502 ************************************
> 16:  35247 **********
> 17:      3 *
> metaslab    102   offset  33000000000   spacemap    157   free    13.9G
> On-disk histogram:            fragmentation 72
>   9:   9657 ***
> 10:  21535 *******
> 11:  50583 ***************
> 12:  86094 *************************
> 13: 129118 *************************************
> 14: 142802 ****************************************
> 15: 137819 ***************************************
> 16:  40583 ************
> 17:      1 *
> metaslab    103   offset  33800000000   spacemap    138   free    12.1G
> On-disk histogram:            fragmentation 73
>   9:  15784 *****
> 10:  27830 *********
> 11:  52560 ****************
> 12:  91619 ***************************
> 13: 131653 ***************************************
> 14: 138296 ****************************************
> 15: 112659 *********************************
> 16:  31996 **********
> metaslab    104   offset  34000000000   spacemap     23   free    10.1G
> On-disk histogram:            fragmentation 73
>   9:   8659 ****
> 10:  19399 *******
> 11:  43748 ****************
> 12:  73353 **************************
> 13: 104563 *************************************
> 14: 114452 ****************************************
> 15:  99188 ***********************************
> 16:  25532 *********
> metaslab    105   offset  34800000000   spacemap    161   free    15.0G
> On-disk histogram:            fragmentation 72
>   9:  10210 ***
> 10:  23047 ******
> 11:  54693 **************
> 12:  94177 ************************
> 13: 140901 ************************************
> 14: 160195 ****************************************
> 15: 146516 *************************************
> 16:  43321 ***********
> 17:     36 *
> 18:      1 *
> metaslab    106   offset  35000000000   spacemap    160   free    13.8G
> On-disk histogram:            fragmentation 73
>   9:   9834 ***
> 10:  20836 ******
> 11:  50239 **************
> 12:  89200 ************************
> 13: 129049 ***********************************
> 14: 148882 ****************************************
> 15: 136377 *************************************
> 16:  38208 ***********
> metaslab    107   offset  35800000000   spacemap    117   free    9.91G
> On-disk histogram:            fragmentation 73
>   9:   9247 ****
> 10:  19322 *******
> 11:  42664 ****************
> 12:  73864 ***************************
> 13: 100814 *************************************
> 14: 111661 ****************************************
> 15:  96703 ***********************************
> 16:  25071 *********
> metaslab    108   offset  36000000000   spacemap    162   free    15.4G
> On-disk histogram:            fragmentation 73
>   9:  10450 ***
> 10:  23114 ******
> 11:  56382 **************
> 12: 103321 *************************
> 13: 147017 ************************************
> 14: 167255 ****************************************
> 15: 151233 *************************************
> 16:  42827 ***********
> 17:      1 *
> metaslab    109   offset  36800000000   spacemap    151   free    15.2G
> On-disk histogram:            fragmentation 72
>   9:  10072 ***
> 10:  23115 ******
> 11:  53203 **************
> 12:  90660 ***********************
> 13: 136060 ***********************************
> 14: 159823 ****************************************
> 15: 150405 **************************************
> 16:  44214 ************
> 17:     16 *
> metaslab    110   offset  37000000000   spacemap    165   free    13.9G
> On-disk histogram:            fragmentation 72
>   9:  10832 ***
> 10:  21083 ******
> 11:  49191 **************
> 12:  88480 ************************
> 13: 124787 **********************************
> 14: 148091 ****************************************
> 15: 139525 **************************************
> 16:  38989 ***********
> 17:      1 *
> metaslab    111   offset  37800000000   spacemap    167   free    13.7G
> On-disk histogram:            fragmentation 73
>   9:  14006 ****
> 10:  24847 *******
> 11:  60974 *****************
> 12:  95059 **************************
> 13: 136838 **************************************
> 14: 146261 ****************************************
> 15: 138147 **************************************
> 16:  35319 **********
> metaslab    112   offset  38000000000   spacemap    144   free    11.7G
> On-disk histogram:            fragmentation 73
>   9:   8411 ***
> 10:  20836 *******
> 11:  42486 **************
> 12:  78725 *************************
> 13: 111437 ************************************
> 14: 127011 ****************************************
> 15: 116353 *************************************
> 16:  30919 **********
> metaslab    113   offset  38800000000   spacemap    147   free    11.1G
> On-disk histogram:            fragmentation 73
>   9:   8552 ***
> 10:  19587 *******
> 11:  46450 ****************
> 12:  82722 ****************************
> 13: 111403 *************************************
> 14: 121706 ****************************************
> 15: 108788 ************************************
> 16:  29064 **********
> metaslab    114   offset  39000000000   spacemap    172   free    15.3G
> On-disk histogram:            fragmentation 73
>   9:  11018 ***
> 10:  23803 ******
> 11:  58430 ***************
> 12: 100241 *************************
> 13: 147094 ************************************
> 14: 163665 ****************************************
> 15: 148226 *************************************
> 16:  43239 ***********
> 17:     16 *
> metaslab    115   offset  39800000000   spacemap    170   free    15.3G
> On-disk histogram:            fragmentation 73
>   9:  11891 ***
> 10:  27467 *******
> 11:  62984 ***************
> 12: 108459 **************************
> 13: 149648 ************************************
> 14: 168497 ****************************************
> 15: 149879 ************************************
> 16:  40776 **********
>
>
>
>
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