From: Jens Axboe <axboe@kernel.dk>
To: ehrhardt@linux.vnet.ibm.com
Cc: fio@vger.kernel.org, oberpar@linux.vnet.ibm.com
Subject: Re: [patch 4/9] fio: provide an option for a startdelay range
Date: Thu, 20 Feb 2014 09:03:10 -0800 [thread overview]
Message-ID: <20140220170310.GA30251@kernel.dk> (raw)
In-Reply-To: <20140220132050.860880543@linux.vnet.ibm.com>
On Thu, Feb 20 2014, ehrhardt@linux.vnet.ibm.com wrote:
> *Resend with hopefully non mangled patches*
> References: <20140220131958.965092001@linux.vnet.ibm.com>
> Content-Disposition: inline; filename=startdelay-range.diff
>
> From: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
>
> This patch allows the specification of start delay as range.
> With a range each thread will chose an individual startdelay out of the range.
>
> That solves an issue of startdelay being the same for each numjob clone and
> that way spreads all kind of activities e.g. that all clones with mixed r/w
> jobs switch r/w at the same time.
> Also all kind of other "thundering herd" issues can be softened by some
> time spread due to this option.
>
> Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
You forgot the options part for thread_options.h.
--
Jens Axboe
next prev parent reply other threads:[~2014-02-20 17:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-20 13:20 [patch 4/9] fio: provide an option for a startdelay range ehrhardt
2014-02-20 17:03 ` Jens Axboe [this message]
[not found] <20140219143639.168501090@linux.vnet.ibm.com>
2014-02-19 15:12 ` Christian Ehrhardt
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