From: Badari Pulavarty <pbadari@us.ibm.com>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-mm@kvack.org
Subject: Re: slab fragmentation ?
Date: 05 Oct 2004 07:46:11 -0700 [thread overview]
Message-ID: <1096987570.12861.122.camel@dyn318077bld.beaverton.ibm.com> (raw)
In-Reply-To: <41617567.9010507@colorfullife.com>
[-- Attachment #1: Type: text/plain, Size: 780 bytes --]
On Mon, 2004-10-04 at 09:08, Manfred Spraul wrote:
> Badari Pulavarty wrote:
>
> >I will enable slab debugging. Someone told me that, by enabling slab
> >debug, it fill force use of different slab for each allocation - there
> >by bloating slab usages and mask the problem. Is it true ?
> >
> >
> >
> Then set STATS to 1. It's around line 118. This just adds full
> statistics without changing the allocations.
> Or even better: enable STATS and DEBUG, but not FORCED_DEBUG. You get
> most internal consistance checks as well, except the tests that rely on
> redzoning.
Here is the /proc/slabinfo output collected every 1 second while
running the scsi-debug test. I enabled STATS and DEBUG.
Please let me know, what you find and what we should try next.
Thanks,
Badari
[-- Attachment #2: slab.out --]
[-- Type: text/plain, Size: 6092 bytes --]
# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <batchcount> <limit> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail> : globalstat <listallocs> <maxobjs> <grown> <reaped> <error> <maxfreeable> <freelimit> : cpustat <allochit> <allocmiss> <freehit> <freemiss>
size-40 2088 9760 64 61 1 : tunables 32 16 8 : slabdata 160 160 0 : globalstat 3324 2010 160 0 0 0 173 : cpustat 5675 213 3945 2
size-40 2088 9760 64 61 1 : tunables 32 16 8 : slabdata 160 160 0 : globalstat 3324 2010 160 0 0 0 173 : cpustat 5675 213 3945 2
size-40 2088 9760 64 61 1 : tunables 32 16 8 : slabdata 160 160 0 : globalstat 3324 2010 160 0 0 0 173 : cpustat 5675 213 3945 2
size-40 4582 31110 64 61 1 : tunables 32 16 8 : slabdata 510 510 0 : globalstat 5468 4085 510 0 0 0 173 : cpustat 7924 347 4247 2
size-40 7246 55022 64 61 1 : tunables 32 16 8 : slabdata 902 902 0 : globalstat 7740 6357 902 0 0 0 173 : cpustat 10405 489 4583 2
size-40 10146 80642 64 61 1 : tunables 32 16 8 : slabdata 1322 1322 0 : globalstat 10220 8837 1322 0 0 0 173 : cpustat 13055 644 4941 2
size-40 12959 105835 64 61 1 : tunables 32 16 8 : slabdata 1735 1735 0 : globalstat 12620 11237 1735 0 0 0 173 : cpustat 15685 794 5295 2
size-40 15765 130601 64 61 1 : tunables 32 16 8 : slabdata 2141 2141 0 : globalstat 15020 13637 2141 0 0 0 173 : cpustat 18304 944 5649 2
size-40 18697 156221 64 61 1 : tunables 32 16 8 : slabdata 2561 2561 0 : globalstat 17532 16149 2561 0 0 0 173 : cpustat 20988 1101 6009 2
size-40 21315 179279 64 61 1 : tunables 32 16 8 : slabdata 2939 2939 0 : globalstat 19772 18389 2939 0 0 0 173 : cpustat 23418 1241 6335 2
size-40 24073 204045 64 61 1 : tunables 32 16 8 : slabdata 3345 3345 0 : globalstat 22124 20741 3345 0 0 0 173 : cpustat 25984 1388 6681 2
size-40 26730 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26730 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26723 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26708 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26701 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26696 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7013 2
size-40 26691 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7015 2
size-40 26687 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7015 2
size-40 26685 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7015 2
size-40 26685 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7015 2
size-40 26683 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7018 2
size-40 26682 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7018 2
size-40 26682 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7018 2
size-40 26680 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7021 2
size-40 26680 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7021 2
size-40 26679 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7021 2
size-40 26679 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7021 2
size-40 26676 227530 64 61 1 : tunables 32 16 8 : slabdata 3730 3730 0 : globalstat 24396 23013 3730 0 0 0 173 : cpustat 28454 1530 7025 2
next prev parent reply other threads:[~2004-10-05 14:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-29 23:36 Badari Pulavarty
2004-09-30 3:41 ` Andrew Morton
2004-09-30 4:52 ` badari
2004-09-30 14:49 ` Martin J. Bligh
2004-09-30 14:48 ` Badari Pulavarty
2004-10-03 6:04 ` Manfred Spraul
2004-10-04 15:51 ` Badari Pulavarty
2004-10-04 16:08 ` Manfred Spraul
2004-10-04 17:37 ` Badari Pulavarty
2004-10-05 14:46 ` Badari Pulavarty [this message]
2004-10-05 17:58 ` Manfred Spraul
2004-10-05 18:27 ` Badari Pulavarty
2004-10-05 18:49 ` Manfred Spraul
2004-10-05 18:47 ` Badari Pulavarty
2004-10-05 21:13 ` Badari Pulavarty
2004-10-05 22:11 ` Chen, Kenneth W
2004-10-05 22:18 ` Chen, Kenneth W
2004-10-06 14:58 ` Badari Pulavarty
2004-10-09 14:28 ` Manfred Spraul
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