Flexible I/O Tester development
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From: Lucian Grijincu <lucian@fb.com>
To: "fio@vger.kernel.org" <fio@vger.kernel.org>
Subject: Usage of group reporting
Date: Thu, 5 Apr 2012 18:29:23 +0000	[thread overview]
Message-ID: <CBA33231.13A4%lucian@fb.com> (raw)
In-Reply-To: <4F7DAF3D.2050000@kernel.dk>


On 4/5/12 7:42 AM, "Jens Axboe" <axboe@kernel.dk> wrote:
> Most people don't use the group reporting


Why do you say that?

For example I'm trying to find those parameters (direct-io, fadvise,
number of threads, libaio/mmap/sync, etc.) that give an overall "best
performance" (whatever that means) on a simulated workload.

I'm using group reporting, because I want numbers for the entire system,
not for an individual thread.

Am I using "fio" wrong or is "fio" mostly used for other kinds of
benchmarking?
--
Lucian


  parent reply	other threads:[~2012-04-05 18:29 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-04  6:39 fio problems Danny Kukawka
2012-04-04 19:50 ` Jens Axboe
2012-04-04 20:15   ` Jens Axboe
2012-04-05  9:24     ` Danny Kukawka
2012-04-05 14:45       ` Jens Axboe
2012-04-05  8:51   ` Danny Kukawka
2012-04-05 14:42     ` Jens Axboe
2012-04-05 15:30       ` Danny Kukawka
2012-04-05 15:41         ` Jens Axboe
2012-04-05 18:29       ` Lucian Grijincu [this message]
2012-04-05 22:01         ` Usage of group reporting Jens Axboe

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