[Gluster-users] glusterfs performance

Anand Avati avati at zresearch.com
Fri Sep 19 19:18:56 UTC 2008

Please post your spec files and the commands used to benchmark


2008/9/20 Graeme <graeme at sudo.ca>

> Anand Avati wrote:
> > Sorry for the wiki not being clear. While it is true the performance
> > translators can be loaded on either client or server, the
> > effectiveness is not the same. write-behind is more effective on the
> > client side.
> Alright, just finished a new batch of benchmarking on 1.4pre5, with
> somewhat surprising results:
> 1.3.10: write=20.8MB/sec, read=36.1MB/sec, rewrite=12.5MB/sec
> 1.4pre5 (with read-ahead, write-behind on client side):
> write=13.8MB/sec, read=62.9MB/sec, rewrite=10.3MB/sec
> So, the read performance enhancement is very obvious with 1.4, but for
> some reason my write performance is greatly reduced. I'm not sure how to
> interpret this, given everyone saying writes should be much faster with
> 1.4 and with write-behind on the client side.
> Can someone explain this behaviour, and perhaps hint how to get my write
> performance back to 1.3 levels without losing the gains in read
> performance?
> G

If I traveled to the end of the rainbow
As Dame Fortune did intend,
Murphy would be there to tell me
The pot's at the other end.
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