[Gluster-devel] writebehind slowness

[Anand Avati]

Harris,

glusterfs --direct-io-mode=write-only -f /path/spec /mnt/glusterfs

avati

2007/8/2, Harris Landgarten <harrisl at lhjonline.com>:
>
> Avati,
>
> What mount command are you referring to?
>
> Harris
>
> ----- Original Message -----
> From: "Anand Avati" <avati at zresearch.com>
> To: "Harris Landgarten" <harrisl at lhjonline.com>
> Cc: "gluster-devel" <gluster-devel at nongnu.org>
> Sent: Wednesday, August 1, 2007 1:03:58 PM (GMT-0500) America/New_York
> Subject: Re: [Gluster-devel] writebehind slowness
>
> Harris,
> also please try with "--direct-io-mode=write-only" command line argument
> to the mount command.
>
> thanks,
> avati
>
>
> 2007/8/1 , Anand Avati < avati at zresearch.com >:
>
> Harris,
> the latest TLA has some cleanups about removing redundant synchronization
> locks, which can possible affect small files. can you please confirm if the
> performance hit on small files is seen with patch-402 as well?
>
> thanks!
>
> avati
>
>
> 2007/8/1 , Harris Landgarten < harrisl at lhjonline.com >:
>
> time cp -av /usr/share/zoneinfo /mnt/glusterfs/test
>
> Harris
>
> ----- Original Message -----
> From: "Anand Avati" < avati at zresearch.com >
> To: "Harris Landgarten" < harrisl at lhjonline.com >
> Cc: "gluster-devel" < gluster-devel at nongnu.org >
> Sent: Wednesday, August 1, 2007 11:03:58 AM (GMT-0500) America/New_York
> Subject: Re: [Gluster-devel] writebehind slowness
>
> Harris,
> with what application did you benchmark these number?
>
> avati
>
>
> 2007/8/1 , Harris Landgarten < harrisl at lhjonline.com >:
>
> I am doing some very basic tests on 397.
>
> time cp -av /usr/share/zoneinfo /mnt/glusterfs/test
>
> with writebehind: 20s
>
> without writebehind: 12s
>
> Please check writebehind functionality. What test shows an improvement?
>
>
> Harris
>
>
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>
>
> --
> Anand V. Avati
>
>
>
> --
> Anand V. Avati
>
>
> --
> Anand V. Avati
>



-- 
Anand V. Avati