From: kristof@sigsegv.be (Kristof Provost)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Help learning from my mistakes
Date: Sun, 5 Apr 2015 14:29:47 +0200 [thread overview]
Message-ID: <20150405122947.GM73237@vega.codepro.be> (raw)
In-Reply-To: <103250.1428210931@turing-police.cc.vt.edu>
On 2015-04-05 01:15:31 (-0400), Valdis.Kletnieks at vt.edu <Valdis.Kletnieks@vt.edu> wrote:
> On Sat, 04 Apr 2015 19:00:42 -0400, Nicholas Krause said:
> > are now slower by up to 3 times,
>
> So what debugging did you already do to try to narrow this down?
>
While we're on the subject, let me indulge a pet peeve: How did you
measure this? Can you reproduce the measurement? Is the difference
statistically significant? What aspect of performance is worse? Task
switching time? IO throughput?
Benchmarking is *hard*, and 'up to 3 times' is not the result of a
careful, well thought out benchmark.
Regards,
Kristof
next prev parent reply other threads:[~2015-04-05 12:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-03 21:23 Help learning from my mistakes Nicholas Krause
2015-04-04 0:13 ` Valdis.Kletnieks at vt.edu
2015-04-04 19:28 ` Nicholas Krause
2015-04-04 19:32 ` Robert P. J. Day
2015-04-04 19:35 ` Nicholas Krause
2015-04-04 22:53 ` Valdis.Kletnieks at vt.edu
2015-04-04 23:00 ` Nicholas Krause
2015-04-05 5:15 ` Valdis.Kletnieks at vt.edu
2015-04-05 12:29 ` Kristof Provost [this message]
2015-04-05 18:45 ` Nicholas Krause
2015-04-05 19:05 ` Kristof Provost
2015-04-05 19:15 ` Nicholas Krause
2015-04-05 19:26 ` Kristof Provost
2015-04-05 19:30 ` Nicholas Krause
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