[Ocfs2-users] out of memory problem concerning 64-bits?
Alexei_Roudnev
Alexei_Roudnev at exigengroup.com
Tue Nov 14 02:32:07 PST 2006
I think that it was specific to some OCFS version or some usage pattern. In
my case, it works for month without any problems
(but load pattern is , in one case, _backup storage_, in another,
_aplication home_.)
----- Original Message -----
From: "Michał Wilkowski" <michal.wilkowski at wolainfo.com.pl>
To: "Sunil Mushran" <Sunil.Mushran at oracle.com>
Cc: <ocfs2-users at oss.oracle.com>
Sent: Monday, November 13, 2006 10:06 PM
Subject: Re: [Ocfs2-users] out of memory problem concerning 64-bits?
Hello,
[root at NPP_apl_04 ~]# egrep 'ocfs|dlm|size-256 |size-32 ' /proc/slabinfo
ocfs2_lock 286 452 16 226 1 : tunables 120 60
8 : slabdata 2 2 0
ocfs2_inode_cache 27155 27432 896 4 1 : tunables 54 27
8 : slabdata 6858 6858 0
ocfs2_uptodate 388 476 32 119 1 : tunables 120 60
8 : slabdata 4 4 0
ocfs2_em_ent 25831 26169 64 61 1 : tunables 120 60
8 : slabdata 429 429 0
dlmfs_inode_cache 1 6 640 6 1 : tunables 54 27
8 : slabdata 1 1 0
dlm_mle_cache 0 0 384 10 1 : tunables 54 27
8 : slabdata 0 0 0
size-256 102189 102195 256 15 1 : tunables 120 60
8 : slabdata 6813 6813 0
size-32 105223 105434 32 119 1 : tunables 120 60
8 : slabdata 886 886 0
[root at NPP_apl_04 ~]# cat /proc/fs/ocfs2_dlm/*/stat
local=17197, remote=0, unknown=0
local=57791, remote=0, unknown=0
local=26553, remote=0, unknown=0
we are currently running only one node and oom-kills occur regularly
(once within a few days). I suppose that OCFS2 eats memory because since
OCFS2 filesystem has been mounted, the LowMemory is decreasing and the
number of OCFS2 locks is increasing (as you can see in the output).
Can you give the hint what I can read in slabinfo?
Regards
Michal Wilkowski
Sunil Mushran napisał(a):
> Are you sure it is ocfs2 that is eating memory?
>
> # egrep 'ocfs|dlm|size-256 |size-32 ' /proc/slabinfo
> # cat /proc/fs/ocfs2_dlm/*/stat
>
> Email the outputs.
>
> Michał Wilkowski wrote:
>> Hello,
>> we are currently running in production the system based on Redhat
>> Enterprise Linux 4 Update 3, ver. 32-bits. We are periodically
>> encountering an OOM-killer problem. Problem was discussed in previous
>> posts.
>>
>> I have a question: does it concern only 32-bits systems or 64-bits as
>> well?
>> On 32-bits system OCFS2 driver consumes Low Memory (only ~900 MB) and
>> therefore causes oom-kills. What about 64-bits systems? Does it
>> consume all memory available for system (in my case: 8 GB) and
>> therefore it takes much longer to encounter oom-kills?
>>
>> It is a very important issue for me and a response would be greatly
>> appreciated.
>>
>> Regards
>> Michal Wilkowski
>>
>> _______________________________________________
>> Ocfs2-users mailing list
>> Ocfs2-users at oss.oracle.com
>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>
>
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