From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: can someone help me with this code (explanation)
Date: Fri, 26 Sep 2014 18:23:26 +0200
Date: 2014-09-26T18:23:26+02:00 [thread overview]
Message-ID: <rilfgfvcv9qy$.cq99wr3g3uo1$.dlg@40tude.net> (raw)
In-Reply-To: m040rm$8em$1@dont-email.me
On Fri, 26 Sep 2014 17:31:45 +0200, Björn Lundin wrote:
> 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.
Undoubtedly so. But on a multi-core architecture there might be no context
switch needed. In that case rendezvous might become as fast as a call to a
protected object's entry.
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2014-09-26 16:23 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
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 [this message]
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
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