[Ocfs2-users] Ocfs2 and low memory
John Peeken, Enterprise Linux Support
john.peeken at oracle.com
Tue Oct 31 08:16:04 PST 2006
Rafal,
See if you have vm.lower_zone_protection set?
# cat /proc/sys/vm/lower_zone_protection
If not set, then set to 100 and viola all your low mem issues should vanish.
You can use top -p <pid> , for the pid for ocfs2 and see how it is using
memory
But, with RHEL4 to eliminate any source of an OOM - set
vm.lower_zone_protection=100 in /etc/sysctl.conf
Regards,
John Peeken
Rafal Maliszewski wrote:
> Redhat 4ES update 3 - kernel 2.6.9.34-smp
>
> Something is eating low memory, not highmem.
> Howto check that there is not ocfs2??
>
>
>
> On 10/31/06, John Peeken, Enterprise Linux Support
> <john.peeken at oracle.com <mailto:john.peeken at oracle.com>> wrote:
>
> Rafal,
> What version of Red Hat are you using?
> cat /proc/meminfo will show us how memory (Low and High) is doing,
> top will show how much a process is using of virtual memory
> How much memory? What kernel is being used?
> Regards,
> John Peeken
>
>
>
> Rafal Maliszewski wrote:
>
>> Hi guys
>>
>> I have 4 node cluster with OCFS2.
>> From time to time redhat fired : oom-killer to kill process with
>> high amout of memory ( for example tomcat)
>>
>> My friends suppose that ocfs2 consume memory.
>>
>> So I have question:
>> How check how many memory is occupied by ocfs processes?
>> Is it a low memory?
>>
>> regards
>>
>>
>>------------------------------------------------------------------------
>>
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>>
>
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