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

[Sunil Mushran]

On 08/22/2011 11:11 AM, Stefan Priebe - Profihost AG wrote:
>>>> 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?
>

inode cache. I don't think you can pin the size of this cache.
It size varies. But we are jumping to conclusions. Right now we
don't know whether that is the problem as the numbers you sent
me were fairly random.