[Gluster-users] Gluster (2.0.1 -> git) with fuse 2.8 crashes NFS

[Harshavardhana]

Justice,

    can you try variable block sizes?, just in case we will be able to see
the issue in a
broader sense.

Regards
--
Harshavardhana
Z Research Inc http://www.zresearch.com/


On Fri, Jul 10, 2009 at 8:39 PM, Justice London <jlondon at lawinfo.com> wrote:

>  It is fuse 2.8.0-pre3 that I tried with the patch you mentioned. When I
> tested I used 1M block sizes for a count of 100 and got 1.4MB/s when that
> was done over NFS. That was using both standard NFS with direct-io disabled
> and unfs3 with direct-io enabled.
>
>
>
> The same test of 1M blocks for a count of 100 made for 45MB/s on the same
> filesystem, but the local gluster mount instead of over NFS. When using NFS
> to one of the same machines as well, but local-disk mount I get around
> 50MB/s.
>
>
>
> Justice London
> E-mail:  jlondon at lawinfo.com
>
>   ------------------------------
>
> *From:* harshavardhanacool at gmail.com [mailto:harshavardhanacool at gmail.com]
> *On Behalf Of *Harshavardhana
> *Sent:* Thursday, July 09, 2009 9:22 PM
> *To:* Justice London
> *Cc:* Anand Avati; gluster-users
>
> *Subject:* Re: [Gluster-users] Gluster (2.0.1 -> git) with fuse 2.8
> crashes NFS
>
>
>
> Justice,
>
>     which is the libfuse version being used with glusterfs?.  Just wanted
> to know what are the metrics you observed while testing?, block size in
> which writes/read were measured during testing?.  etc,
>
> Regards
> --
> Harshavardhana
> Z Research Inc http://www.zresearch.com/
>
>  On Thu, Jul 9, 2009 at 11:45 PM, Justice London <jlondon at lawinfo.com>
> wrote:
>
> Well, mostly it seems to be on the throughput. I haven't really measured
> for
> metadata improvements yet.
>
> Of note, is that NFS is now working, but it appears to be EXTREMELY slow. I
> was only able to manage about 1-2MB/s
>
> Justice London
> E-mail:  jlondon at lawinfo.com
>
>
> -----Original Message-----
> From: anand.avati at gmail.com [mailto:anand.avati at gmail.com] On Behalf Of
> Anand Avati
>
> Sent: Tuesday, July 07, 2009 4:02 PM
> To: Justice London
> Cc: gluster-users; Harshavardhana
> Subject: Re: [Gluster-users] Gluster (2.0.1 -> git) with fuse 2.8 crashes
> NFS
>
> > The 2.0.3 release of gluster appears so far to have fixed the crash issue
> I
> > was experiencing. What was the specific patch that fixed for it I was
> > wondering?
>
> It was http://patches.gluster.com/patch/664/. A less ugly fix is lined
> up for 2.1
>
>
> > Great job either way! It appears that with fuse 2.8 and newer kernels
> that
> > gluster absolutely flies. With a replication environment between two
> crummy
> > testbed machines it's probably about twice as fast as 2.7.4 based fuse!
>
> Just curious, are the observed performance improvements in terms of IO
> throughput or metadata latency?
>
> Avati
>
> Checked by AVG - www.avg.com
>
> Version: 8.5.375 / Virus Database: 270.13.8/2224 - Release Date: 07/08/09
> 05:53:00
>
>
>
> Checked by AVG - www.avg.com
> Version: 8.5.375 / Virus Database: 270.13.8/2227 - Release Date: 07/09/09
> 05:55:00
>
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