From: Jens Axboe <axboe@kernel.dk>
To: Edoardo Comar <ECOMAR@uk.ibm.com>
Cc: fio@vger.kernel.org
Subject: Re: output - aggregate read bandwitdh
Date: Sat, 18 May 2013 09:01:10 +0200 [thread overview]
Message-ID: <20130518070110.GK19781@kernel.dk> (raw)
In-Reply-To: <20130518065341.GJ19781@kernel.dk>
On Sat, May 18 2013, Jens Axboe wrote:
> On Sat, May 18 2013, Edoardo Comar wrote:
> > I have a problem with fio built today from GIT
> > running the jobfile below, the aggregate bandwidth for 'read' output by
> > the latest fio is excessive
> > while it seems reasonable with an older fio version.
> >
> > fio-2.0.13 READ: io=51500KB, aggrb=857KB/s,
> >
> > fio-2.1-6-g4d01 READ: io=31057MB, aggrb=530017KB/s,
> >
> >
> > You should easily reproduce this with the data below.
> > I have reproduced it on my laptop (RHEL 6.4) as well as on other RHEL
> > systems.
> > on my laptop
> > READ: io=13028KB, aggrb=216KB/s,
> > or
> > READ: io=33204MB, aggrb=566519KB/s,
> >
> > running the same configuration
> >
> > I believe this to be a bug.
>
> I wonder if this is a regression from 2.0.15 to 2.1. The gfio stuff got
> merged in along the way, could definitely be an accounting issue
> introduced there. I'll take a look.
Doesn't reproduce here for me. Could you try a make clean, the configure
and make again? Just to be on the safe side...
--
Jens Axboe
next prev parent reply other threads:[~2013-05-18 7:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-18 1:28 output - aggregate read bandwitdh Edoardo Comar
2013-05-18 6:53 ` Jens Axboe
2013-05-18 7:01 ` Jens Axboe [this message]
2013-05-18 10:52 ` Edoardo Comar
2013-05-18 11:02 ` Edoardo Comar
[not found] ` <OFEF259463.FACECBD6-ON80257B6F.003C54FB-80257B6F.003CA237@LocalDomain>
2013-05-18 11:18 ` Edoardo Comar
2013-05-18 12:22 ` Jens Axboe
2013-05-18 17:03 ` Edoardo Comar
2013-05-18 23:15 ` Edoardo Comar
2013-05-22 8:28 ` Edoardo Comar
2013-05-22 8:57 ` Jens Axboe
2013-05-22 10:03 ` Edoardo Comar
2013-05-22 10:15 ` Jens Axboe
2013-05-22 10:18 ` Jens Axboe
2013-05-22 12:19 ` Edoardo Comar
2013-05-22 12:25 ` Jens Axboe
2013-05-22 13:15 ` Edoardo Comar
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