From: Jens Axboe <axboe@kernel.dk>
To: Yu-ju Hong <yjhong@google.com>
Cc: fio@vger.kernel.org, Nauman Rafique <nauman@google.com>,
Eric Gouriou <egouriou@google.com>
Subject: Re: [PATCH] stats: Fix computation of standard deviation
Date: Sat, 30 Jul 2011 09:19:02 +0200 [thread overview]
Message-ID: <4E33B066.5030805@kernel.dk> (raw)
In-Reply-To: <1311978223-15603-1-git-send-email-yjhong@google.com>
On 2011-07-30 00:23, Yu-ju Hong wrote:
> Fix the computation of standard deviation for a group
> of jobs. Please see the below link for the
> approximation formula used.
> <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
>
> The formula was originally presented here:
> <ftp://reports.stanford.edu/pub/cstr/reports/cs/tr/79/773/
> CS-TR-79-773.pdf>
This is great! I completely forgot about that hack. It's one of those
things you make a note of to fix up, then forget all about it. Applied.
--
Jens Axboe
prev parent reply other threads:[~2011-07-30 7:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-29 22:23 [PATCH] stats: Fix computation of standard deviation Yu-ju Hong
2011-07-30 7:19 ` Jens Axboe [this message]
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