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Re: [Gluster-devel] Major slowdown in cp performance in 1.4 branch


From: Brent A Nelson
Subject: Re: [Gluster-devel] Major slowdown in cp performance in 1.4 branch
Date: Mon, 25 Aug 2008 17:54:50 -0400 (EDT)

3.2 MBps, which is far less than previous, on a "dd if=/dev/zero of=/beast/blah0 bs=1M count=10000"

Thanks,

Brent

On Mon, 25 Aug 2008, Amar S. Tumballi wrote:

Brent,
Can you check the dd speed too? One user on irc reported very slow cp
performance too, but his dd performance was good.

Regards,

2008/8/25 Brent A Nelson <address@hidden>

A checkout today from the 1.4 branch seems to give terrible performance on
"cp -a".  Something that took a little over 9 minutes from a checkout last
week now takes over an hour (it hasn't finished yet).  CPU time consumed by
glusterfs and all the glusterfsd processes is quite a bit smaller than it
used to be; it looks like a recent patch is causing a substantial
performance issue...

Thanks,

Brent


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--
Amar Tumballi
Gluster/GlusterFS Hacker
[bulde on #gluster/irc.gnu.org]
http://www.zresearch.com - Commoditizing Super Storage!





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