Been noticing recently that kernel memory steadily climbs...

After boot, it starts at about 9% and after a single gate build it's over 22%.

I've seen it go over 40% after a medium sized pkgsrc bulk build.

> richard@omnis:/home/richard/src/illumos-gate$ echo "::memstat;::kmastat" 
> |pfexec mdb -k
> Page Summary                Pages                MB  %Tot
> ------------     ----------------  ----------------  ----
> Kernel                    1836820              7175   22%
> ZFS File Data             3151588             12310   38%
> Anon                       153146               598    2%
> Exec and libs                3038                11    0%
> Page cache                  31056               121    0%
> Free (cachelist)           135099               527    2%
> Free (freelist)           3074327             12009   37%
> 
> Total                     8385074             32754
> Physical                  8385072             32754
> cache                            buf       buf       buf memory      alloc 
> alloc
> name                            size    in use     total in use    succeed  
> fail
> ------------------------------ ----- --------- --------- ------ ---------- 
> -----
>...
> Total [hat_memload]                                       67.3M  418468801    
>  0
> Total [kmem_msb]                                          1.41G   30612937    
>  0
> Total [kmem_firewall]                                      867M   11302480    
>  0
> Total [kmem_va]                                           1.27G     363007    
>  0
> Total [kmem_default]                                      1.38G 1610322588    
>  0
> Total [kmem_io_64G]                                         76M       9728    
>  0
> Total [kmem_io_4G]                                          44K         41    
>  0
> Total [kmem_io_2G]                                          12K          5    
>  0
> Total [bp_map]                                                0          3    
>  0
> Total [umem_np]                                               0        498    
>  0
> Total [id32]                                                 4K         83    
>  0
> Total [zfs_file_data]                                      764M      51006    
>  0
> Total [zfs_file_data_buf]                                 12.0G    1164166    
>  0
> Total [segkp]                                              448K     670751    
>  0
> Total [ip_minor_arena_sa]                                    64       2008    
>  0
> Total [ip_minor_arena_la]                                    64       1124    
>  0
> Total [spdsock]                                               0          1    
>  0
> Total [namefs_inodes]                                        64        262    
>  0
> ------------------------------ ----- --------- --------- ------ ---------- 
> -----
> 
> vmem                              memory     memory    memory      alloc 
> alloc 
> name                              in use      total    import    succeed  
> fail 
> ------------------------------ --------- ---------- --------- ---------- 
> ----- 
> heap                               6.20G       987G         0   11389993     
> 0 
>     vmem_metadata                   636M       636M      636M      39905     
> 0 
>         vmem_seg                    621M       621M      621M      39762     
> 0 
>         vmem_hash                  14.0M      14.0M     14.0M         72     
> 0 
>         vmem_vmem                   288K       320K      284K         99     
> 0 
>     static                             0          0         0          0     
> 0 
>         static_alloc                   0          0         0          0     
> 0 
>     hat_memload                    67.3M      67.3M     67.3M      17833     
> 0 
>     kstat                           786K       824K      760K       2479     
> 0 
>     kmem_metadata                  1.44G      1.44G     1.44G     369853     
> 0 
>         kmem_msb                   1.41G      1.41G     1.41G     369392     
> 0 
>         kmem_cache                  586K       604K      604K        541     
> 0 
>         kmem_hash                  36.6M      36.7M     36.7M        827     
> 0 
>     kmem_log                       1.23G      1.23G     1.23G         12     
> 0 
>     kmem_firewall_va               1.09G      1.09G     1.09G   11302795     
> 0 
>         kmem_firewall               867M       867M      867M   11302491     
> 0 
>         kmem_oversize               254M       255M      255M        305     
> 0 
>     mod_sysfile                      275         4K        4K          8     
> 0 
>     kmem_va                        1.39G      1.39G     1.39G      11580     
> 0 
>         kmem_default               1.38G      1.38G     1.38G     364168     
> 0 
>     kmem_io_64G                      76M        76M       76M       9728     
> 0 
>     kmem_io_4G                       44K        44K       44K         11     
> 0 
>     kmem_io_2G                       68K        68K       68K         82     
> 0 
>     kmem_io_16M                        0          0         0          0     
> 0 
>     bp_map                             0          0         0        205     
> 0 
>     umem_np                            0          0         0        427     
> 0 
>     ksyms                          2.13M      2.39M     2.39M        612     
> 0 
>     ctf                             964K      1.09M     1.09M        607     
> 0 
> heap_core                          1.93M       888M         0         61     
> 0 
>     heaptext                       9.83M        64M         0        220     
> 0 
>         module_text                11.4M      11.8M     9.83M        612     
> 0 
>     id32                              4K         4K        4K          1     
> 0 
>     module_data                    1.22M      2.22M     1.93M        759     
> 0 
> logminor_space                        27       256K         0         35     
> 0 
> taskq_id_arena                       122      2.00G         0        215     
> 0 
> zfs_file_data                      12.1G      32.0G         0     105236     
> 0 
>     zfs_file_data_buf              12.0G      12.0G     12.0G     150110     
> 0 
> device                             1.65M         1G         0      33002     
> 0 
> segkp                              32.0M         2G         0      28817     
> 0 
> mac_minor_ids                          8       127K         0          9     
> 0 
> rctl_ids                              41      32.0K         0         41     
> 0 
> zoneid_space                           0      9.76K         0          0     
> 0 
> taskid_space                          40       977K         0         88     
> 0 
> pool_ids                               1       977K         0          1     
> 0 
> contracts                             43      2.00G         0         94     
> 0 
> ddi_periodic                           0       1023         0          0     
> 0 
> ip_minor_arena_sa                     64       256K         0         17     
> 0 
> ip_minor_arena_la                     64      4.00G         0         14     
> 0 
> lport-instances                        0        64K         0          0     
> 0 
> rport-instances                        0        64K         0          0     
> 0 
> ibcm_local_sid                         0      4.00G         0          0     
> 0 
> ibcm_ip_sid                            0      64.0K         0          0     
> 0 
> lib_va_32                          7.68M      1.99G         0         20     
> 0 
> tl_minor_space                       288       256K         0       1214     
> 0 
> keysock                                0      4.00G         0          0     
> 0 
> spdsock                                0      4.00G         0          1     
> 0 
> namefs_inodes                         64        64K         0          1     
> 0 
> lib_va_64                           105M       125T         0        608     
> 0 
> Hex0xffffff0961518488_minor            0      4.00G         0          0     
> 0 
> Hex0xffffff0961518490_minor            0      4.00G         0          0     
> 0 
> devfsadm_event_channel                 1        101         0          1     
> 0 
> devfsadm_event_channel                 1          2         0          1     
> 0 
> syseventd_channel                      2        101         0          2     
> 0 
> syseventd_channel                      1          2         0          1     
> 0 
> syseventconfd_door                     0        101         0          0     
> 0 
> syseventconfd_door                     1          2         0          1     
> 0 
> dtrace                                68      4.00G         0      48174     
> 0 
> dtrace_minor                           0      4.00G         0          0     
> 0 
> ipf_minor                              0      4.00G         0          0     
> 0 
> ipmi_id_space                          2        127         0          5     
> 0 
> eventfd_minor                         74      4.00G         0        236     
> 0 
> logdmux_minor                          0        256         0          0     
> 0 
> ptms_minor                             3         16         0          3     
> 0 
> Client_id_space                        0       128K         0          0     
> 0 
> ClntIP_id_space                        0         1M         0          0     
> 0 
> OpenOwner_id_space                     0         1M         0          0     
> 0 
> OpenStateID_id_space                   0         1M         0          0     
> 0 
> LockStateID_id_space                   0         1M         0          0     
> 0 
> Lockowner_id_space                     0         1M         0          0     
> 0 
> DelegStateID_id_space                  0         1M         0          0     
> 0 
> shmids                                 0         64         0         97     
> 0 
> ------------------------------ --------- ---------- --------- ---------- 
> ----- 

> richard@omnis:/home/richard/src/illumos-gate$ kstat -n process_cache
> module: unix                            instance: 0     
> name:   process_cache                   class:    kmem_cache
>       align                           8
>       alloc                           520455
>       alloc_fail                      0
>       buf_avail                       0
>       buf_constructed                 0
>       buf_inuse                       92
>       buf_max                         1758
>       buf_size                        3920
>       buf_total                       92
>       chunk_size                      3920
>       crtime                          47,305215503
>       defrag                          0
>       depot_alloc                     0
>       depot_contention                0
>       depot_free                      0
>       empty_magazines                 0
>       free                            520363
>       full_magazines                  0
>       hash_lookup_depth               96862
>       hash_rescale                    9
>       hash_size                       128
>       magazine_size                   0
>       move_callbacks                  0
>       move_dont_know                  0
>       move_dont_need                  0
>       move_hunt_found                 0
>       move_later                      0
>       move_no                         0
>       move_reclaimable                0
>       move_slabs_freed                0
>       move_yes                        0
>       reap                            0
>       scan                            0
>       slab_alloc                      520455
>       slab_create                     520455
>       slab_destroy                    520363
>       slab_free                       520363
>       slab_size                       4096
>       snaptime                        8897,308415399
>       vmem_source                     18

?? notice the slab stats?

Nobody else sees this?


-- 
Richard PALO




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