[Gluster-users] Old story - glusterfs memory usage

[Shehjar Tikoo]

Krzysztof Strasburger wrote:
> On Mon, Mar 29, 2010 at 12:35:32PM +0530, Shehjar Tikoo wrote:
>> Krzysztof Strasburger wrote:
>>> On Mon, Mar 29, 2010 at 11:48:44AM +0530, Shehjar Tikoo wrote:
>>>> This is a known problem. See a previous email on the devel list about it 
>>>> at:
>>>> http://article.gmane.org/gmane.comp.file-systems.gluster.devel/1469
>>>>
>>>> A bug is filed is at:
>>>> http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=545
>>>>
>>>> For more info on the drop_caches mentioned in that gluster-devel thread, 
>>>> see:
>>>> http://www.linuxinsight.com/proc_sys_vm_drop_caches.html
>>>>
>>>> Do let us know if dropping caches as shown in that thread helps.
>>> Dear Shehjar,
>>> thank you, but drop_caches really is not the Holy Grail of this problem. 
>>> It simply does not change anything, to set it to something != 0.
>>> Amon Ott figured it out, that forget() is called, but memory is not freed
>>> anyway. 
>> Of course, just doing drop_caches is not the silver bullet here. In some 
>> cases, it needs to be preceded by a sync. What is your experience with that?
>>
>> In any case, if Ott is right, then we might have a memory leak. The best 
>> step is to file a bug.
> Shehjar - I have sent the response to your private mail; sorry for that.
> Syncing is IMHO irrelevant here, as there are no dirty buffers to be
> written out to fs. The files are only opened, stated and closed.
> I filed related bug report in ancient days, when the bug database was hosted on
> savannah. If I remember correctly, it has been closed in the meantime. 
> Should I file a new report, or find the old one and reopen it (if it is closed)?
> Krzysztof
> 
We'll prefer having the old one re-opened if you can find it, if not, 
feel free to file a new one.

-Shehjar


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