[Ocfs2-users] Slow OCFS2 file creation / how to make ocfs2 generally faster?

Stefan Priebe - Profihost AG s.priebe at profihost.ag
Mon Aug 22 11:11:17 PDT 2011


>>> BTW, how much memory do the nodes have?
>>> Lock Resources: 1863 (497079)
>>>
>>> This means that that node has created 497K lock resources
>>> but have under 2000 cached. That could be due to deletes
>>> or could be due to lack of memory (lock churning).
>> They all have 8GB of mem but only 1,5-2,5 are in use regarding free
>> command. What does lock churning mean and is there another setting /
>> value i can look at?
>
> Its tied to the inode cache. As long as the inode is cached,
> the lock resource will be cached.
Thanks for your answer but i didn't get it. It is enough "main" memory 
free. Or is this to some special kind of memory? perhaps tuneable via 
sysctl?

Stefan



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