Scott Lovenberg wrote:
On Feb 1, 2008 7:38 AM, Felipe Martinez Hermo <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
I've got vfs_cache_pressure = 100 on both servers and ext3 filesystems
on both.
These are the files on /proc/sys/vm:
slow server:
========
file
value
-rw-r--r-- 1 root root 0 2008-02-01 13:31 block_dump
-rw-r--r-- 1 root root 0 2008-02-01 13:31 dirty_background_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:31 dirty_expire_centisecs
-rw-r--r-- 1 root root 0 2008-02-01 13:31 dirty_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:31 dirty_writeback_centisecs
-rw-r--r-- 1 root root 0 2008-02-01 13:31 drop_caches
-rw-r--r-- 1 root root 0 2008-02-01 13:31 laptop_mode
-rw-r--r-- 1 root root 0 2008-02-01 13:31 legacy_va_layout
-rw-r--r-- 1 root root 0 2008-02-01 13:31 lowmem_reserve_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:31 max_map_count
-rw-r--r-- 1 root root 0 2008-02-01 13:31 min_free_kbytes
-r--r--r-- 1 root root 0 2008-02-01 13:31 nr_pdflush_threads
-rw-r--r-- 1 root root 0 2008-02-01 13:31 overcommit_memory
-rw-r--r-- 1 root root 0 2008-02-01 13:31 overcommit_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:31 page-cluster
-rw-r--r-- 1 root root 0 2008-02-01 13:31 panic_on_oom
-rw-r--r-- 1 root root 0 2008-02-01 13:31 percpu_pagelist_fraction
-rw-r--r-- 1 root root 0 2008-02-01 13:31 swappiness
-rw-r--r-- 1 root root 0 2008-02-01 13:31 swap_token_timeout
-rw-r--r-- 1 root root 0 2008-02-01 13:31 vdso_enabled
-rw-r--r-- 1 root root 0 2008-02-01 13:31 vfs_cache_pressure 0
10
3000
40
500
0
0
0
256 256 32
65536
3831
2
0
50
3
0
0
60
300
1
100
Fast server:
========
file
value
-rw-r--r-- 1 root root 0 2008-02-01 13:32 block_dump
-rw-r--r-- 1 root root 0 2008-02-01 13:32 dirty_background_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:32 dirty_expire_centisecs
-rw-r--r-- 1 root root 0 2008-02-01 13:32 dirty_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:32 dirty_writeback_centisecs
-rw-r--r-- 1 root root 0 2008-02-01 13:32 laptop_mode
-rw-r--r-- 1 root root 0 2008-02-01 13:32 lower_zone_protection
-rw-r--r-- 1 root root 0 2008-02-01 13:32 max_map_count
-rw-r--r-- 1 root root 0 2008-02-01 13:32 min_free_kbytes
-r--r--r-- 1 root root 0 2008-02-01 13:32 nr_pdflush_threads
-rw-r--r-- 1 root root 0 2008-02-01 13:32 overcommit_memory
-rw-r--r-- 1 root root 0 2008-02-01 13:32 overcommit_ratio
-rw-r--r-- 1 root root 0 2008-02-01 13:32 page-cluster
-rw-r--r-- 1 root root 0 2008-02-01 13:32 swappiness
-rw-r--r-- 1 root root 0 2008-02-01 13:32 vfs_cache_pressure 0
10
3000
40
500
0
0
65536
957
2
0
50
3
60
100
Scott Lovenberg escribió:
> Felipe Martinez Hermo wrote:
>>
>>
>>
>> Hi, everybody!
>>
>> I have been using samab on Debian for years and I have recently
>> migrated my file server from version 3.0.14a-3sarge2 to
3.0.24-6etch4.
>> One or our applications stores its data in a shared folder.
This data
>> is distributed in over 29000 files of about 1k-40k and is so much
>> slower when it runs on the new server.
>>
>> I have thoroughly revised both smb.conf files, but can't see
>> significant differences. I have read them so much that probably I'm
>> already obfuscated.
>>
>> I have tuned socket options, but can't see any improvement.
>> Any ideas?
>>
>> Thanks in advance
>>
> how are your settings in /proc/sys/vm/*? If you've got the RAM,
turn
> down the vfs_cache_pressure - you should get more hits. Also, what
> file system are you using?
--
==============================
Felipe Martínez Hermo
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
==============================
Servicios Informáticos
UGT Galicia
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
==============================
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OK, so we're apples to apples, so to speak; the servers are tuned the
same. I'll assume your disks are tuned from hdparm and up to snuff,
otherwise you wouldn't be tuning sockets ;). Did your old server have
samba settings for oplocks set?
--
Peace and Blessings,
-Scott.
"Of course, that's just my opinion; I could be wrong"
-Dennis Miller
Erm, sorry, I didn't catch that you had 2 .conf files there. I'm back
to the drawing board. Sorry about that. Anyone else have any ideas?
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