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[Gluster-devel] io-threads confusion
From: |
Sascha Ottolski |
Subject: |
[Gluster-devel] io-threads confusion |
Date: |
Wed, 27 Feb 2008 10:42:29 +0100 |
User-agent: |
KMail/1.9.6 (enterprise 0.20070907.709405) |
Hi,
this whole io-threads business makes me nuts. In my tests with
webservers serving many small images, I could never see remarkable
difference when playing with io-threads, neither on server nor on
client side.
besides that, it still confuses me how to know which settings are
recommended. in on posting is said, io-threads on the client may help:
http://lists.nongnu.org/archive/html/gluster-devel/2007-11/msg00192.html
in some other postings, it's said it doesn't have an effect on
client-side, i.e.:
http://lists.nongnu.org/archive/html/gluster-devel/2008-01/msg00241.html
and it still remains unclear (at least to me) how many threads should be
configured. if I understand that each thread handles one request
parallel to the others, than if I have 1000 parallel request, wouldn't
I want to set io-threads to a similar high number?
say I have 3 webservers, each handling 100 requests in parallel, all
using the same glusterfs mount.
should it improve performance if I
- set io-threads to 100 on each client
- set io-threads to 300 on the server
???
Thanks once again,
Sascha
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