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Re: [Gluster-devel] writebehind slowness
From: |
Harris Landgarten |
Subject: |
Re: [Gluster-devel] writebehind slowness |
Date: |
Wed, 1 Aug 2007 15:22:23 -0400 (EDT) |
Avati,
402 reduced the cp -av time with writebehind to 18s. The time with writebehind
off is 12s. --direct-io=write-only had very little effect (.1-.2 sec)
Harris
----- Original Message -----
From: "Anand Avati" <address@hidden>
To: "Harris Landgarten" <address@hidden>
Cc: "gluster-devel" <address@hidden>
Sent: Wednesday, August 1, 2007 3:07:17 PM (GMT-0500) America/New_York
Subject: Re: [Gluster-devel] writebehind slowness
Harris,
glusterfs --direct-io-mode=write-only -f /path/spec /mnt/glusterfs
avati
2007/8/2 , Harris Landgarten < address@hidden >:
Avati,
What mount command are you referring to?
Harris
----- Original Message -----
From: "Anand Avati" < address@hidden >
To: "Harris Landgarten" < address@hidden >
Cc: "gluster-devel" < address@hidden >
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 < address@hidden >:
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 < address@hidden >:
time cp -av /usr/share/zoneinfo /mnt/glusterfs/test
Harris
----- Original Message -----
From: "Anand Avati" < address@hidden >
To: "Harris Landgarten" < address@hidden >
Cc: "gluster-devel" < address@hidden >
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 < address@hidden >:
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
- [Gluster-devel] writebehind slowness, Harris Landgarten, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Anand Avati, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Harris Landgarten, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Anand Avati, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Anand Avati, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Harris Landgarten, 2007/08/01
- Re: [Gluster-devel] writebehind slowness, Anand Avati, 2007/08/01
- Re: [Gluster-devel] writebehind slowness,
Harris Landgarten <=
- Re: [Gluster-devel] writebehind slowness, Sebastien LELIEVRE, 2007/08/02
- Message not available
- Re: [Gluster-devel] writebehind slowness, Sebastien LELIEVRE, 2007/08/03
- [Gluster-devel] Errors, Nathan Allen Stratton, 2007/08/01
- [Gluster-devel] Re: Errors, Anand Avati, 2007/08/02