[Gluster-users] Performance degrade

pkoelle pkoelle at gmail.com
Mon Jul 19 16:27:25 UTC 2010

Am 19.07.2010 17:10, schrieb Roland Rabben:
> I did try that on one of the clients. I removed all performance
> translators except io-threads. No imporovement.
> The server still use a hughe ammount of CPU.
36*8 = 288 threads alone for IO. I don't know specifics about GlusterFS 
but common knowledge suggests high thread counts are bad. You end up 
using all your CPU waiting for locks and in context switches.

Why do you export each disk seperately? You don't seem to care about 
disk failure so you could put all disks in one LVM VG and export LVs 
from that.


> Roland
> 2010/7/19 Andre Felipe Machado<andremachado at techforce.com.br>:
>> Hello,
>> Did you try to minimize or even NOT use any cache?
>> With so many nodes, the cache coherency between them may had become an issue...
>> Regards.
>> Andre Felipe Machado
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