From: "Björn Lundin" <b.f.lundin@gmail.com>
Subject: Re: can someone help me with this code (explanation)
Date: Fri, 26 Sep 2014 17:31:45 +0200
Date: 2014-09-26T17:31:45+02:00 [thread overview]
Message-ID: <m040rm$8em$1@dont-email.me> (raw)
In-Reply-To: <m03udc$l86$1@dont-email.me>
On 2014-09-26 16:49, J-P. Rosen wrote:
> Le 26/09/2014 16:15, Björn Lundin a écrit :
>> http://www.sigada.org/conf/sa98/papers/mueller.pdf
>>
>> I did not read all of it, but the conclusion is that
>> context switches are bad for performance.
>> If a protected object can REPLACE a task, it
>> will show in measurements. (and they did measure)
>
> That's a paper from 16 years ago. Computers as well as compilers have
> evolved a lot, therefore I would not trust the paper for making a
> decision nowadays...
>
Yes, I did point that out.
But still, I have no problem believing
that context switches still is bad for performance.
In the OP's example, I do not think it matters,
but there may be other situations where it does.
It's funny though that you want measurements,
and when you get them, you say they are too old.
--
Björn
next prev parent reply other threads:[~2014-09-26 15:31 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 13:44 can someone help me with this code (explanation) Stribor40
2014-09-25 14:56 ` Björn Lundin
2014-09-25 15:01 ` Björn Lundin
2014-09-25 15:54 ` Stribor40
2014-09-25 17:11 ` Niklas Holsti
2014-09-25 19:41 ` Stribor40
2014-09-25 19:53 ` Jeffrey Carter
2014-09-25 20:10 ` Niklas Holsti
2014-09-25 22:27 ` Jeffrey Carter
2014-09-26 7:04 ` Björn Lundin
2014-09-26 7:58 ` J-P. Rosen
2014-09-26 10:24 ` G.B.
2014-09-26 11:48 ` Björn Lundin
2014-09-26 12:49 ` J-P. Rosen
2014-09-26 14:15 ` Björn Lundin
2014-09-26 14:49 ` J-P. Rosen
2014-09-26 15:31 ` Björn Lundin [this message]
2014-09-26 16:08 ` G.B.
2014-09-30 4:22 ` Brad Moore
2014-09-30 21:59 ` Georg Bauhaus
2014-10-01 15:38 ` Brad Moore
2014-09-26 16:23 ` Dmitry A. Kazakov
2014-09-26 20:38 ` J-P. Rosen
2014-09-27 18:16 ` Björn Lundin
2014-09-26 16:43 ` Niklas Holsti
2014-09-26 16:45 ` Niklas Holsti
2014-10-09 2:45 ` Randy Brukardt
2014-09-26 16:44 ` Niklas Holsti
2014-09-26 5:06 ` J-P. Rosen
2014-09-25 16:53 ` Jeffrey Carter
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox