[OpenAFS] Tips for increasing throughput

Matt W. Benjamin matt@linuxbox.com
Wed, 31 Aug 2011 09:01:29 -0400 (EDT)


I think some more detail on the network/network path would be helpful.



----- "Ken Elkabany" <Ken@Elkabany.com> wrote:

> Hi,
> On a network capable of scp-ing files between machines at 60MB/sec, we
> are only able to achieve 2-3MB/sec of throughput when using AFS. We've
> been conducting tests on 300MB files, by copying them from the /afs/*
> mount to the local filesystem with memcache enabled. In production, we
> will not be using memcache, but we wanted to eliminate the overhead of
> the on-disk cache manager. We've tried tweaking our options as
> follows: "-verbose -nosettime -memcache -chunksize 20 -stat 2800
> -daemons 5 -volumes 128". The most important option is the chunksize,
> which did not have a measurable effect. Any other tips?
> Thanks!
> Ken


Matt Benjamin

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