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From: Martin Steigerwald <Martin@lichtvoll.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: fio@vger.kernel.org
Subject: Re: Measuring IOPS (solved, I think)
Date: Tue, 2 Aug 2011 23:28:52 +0200	[thread overview]
Message-ID: <201108022328.52415.Martin@lichtvoll.de> (raw)
In-Reply-To: <4E38549F.5080601@kernel.dk>

Am Dienstag, 2. August 2011 schrieben Sie:
> That's a long email! The stonewall should be put in the job section
> that has to wait for previous jobs. So, ala:
> 
> [job1]
> something
> 
> [job2]
> stonewall       # will wait for job1 to finish
> something
> 
> [job3]
> something       # will run in parallel with job2
> 
> [job4]
> stonewall       # will run when job2+3 are finished
> something
> 
> If that's not the case, something is broken. A quick test here seems to
> show that it works.

Its documented. From the manpage that I read several times by now:

Wait for preceding jobs in the job file to exit before starting this one.  
stonewall implies new_group.


Somehow despite my reading of manpage, README, HOWTO I came to the thought 
that it tells fio to wait for the current job to finish, thus I had the 
stonewall options misordered.

I expect that it works exactly as you said and try it this way. Instead of 
omitting the last stonewall option in my iops job file I could omit the 
first for the first job. Cause the first job does not need to wait for a 
previous job.

Thanks,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7


  reply	other threads:[~2011-08-02 21:28 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-29 15:37 Measuring IOPS Martin Steigerwald
2011-07-29 16:14 ` Martin Steigerwald
2011-08-02 14:32   ` Measuring IOPS (solved, I think) Martin Steigerwald
2011-08-02 19:48     ` Jens Axboe
2011-08-02 21:28       ` Martin Steigerwald [this message]
2011-08-03  7:17         ` Jens Axboe
2011-08-03  9:03           ` Martin Steigerwald
2011-08-03 10:34             ` Jens Axboe
2011-08-03 19:31 ` Measuring IOPS Martin Steigerwald
2011-08-03 20:22   ` Jeff Moyer
2011-08-03 20:33     ` Martin Steigerwald
2011-08-04  7:50       ` Jens Axboe
2011-08-03 20:42     ` Martin Steigerwald
2011-08-03 20:50       ` Martin Steigerwald
2011-08-04  8:51         ` Martin Steigerwald
2011-08-04  8:58           ` Jens Axboe
2011-08-04  9:34             ` Martin Steigerwald
2011-08-04 10:02               ` Jens Axboe
2011-08-04 10:23                 ` Martin Steigerwald
2011-08-05  7:28                   ` Jens Axboe

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