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Re: [Gluster-devel] general performance translator recommendations

From: Brent A Nelson
Subject: Re: [Gluster-devel] general performance translator recommendations
Date: Wed, 14 Jan 2009 09:56:48 -0500 (EST)
User-agent: Alpine 1.00 (DEB 882 2007-12-20)

On Wed, 14 Jan 2009, Vikas Gorur wrote:

As for io-threads above/below unify, there is not much to be gained by
using io-threads on the client side, since there are no slow
operations on the client side (just a straight code path from the
application to the server). Using it on the server makes sense because
it lets GlusterFS do other useful work while one thread is waiting for
a read/write from/to the underlying filesystem finishes.

I found io-threads on the client to be a major gain. When the client is very busy with io tasks, io-threads seems to eliminate latency in metadata operations (e.g., ls doesn't hang for ages). It made the client feel much more responsive.



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