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Groups > comp.programming.threads > #210

Re: cond signal wait

From Alexander Terekhov <terekhov@web.de>
Newsgroups comp.programming.threads
Subject Re: cond signal wait
Date 2011-05-31 15:32 +0200
Organization A noiseless patient Spider
Message-ID <4DE4EDD9.7B27185A@web.de> (permalink)
References (5 earlier) <8ab4e07e-2b9b-4375-b425-dc03e6d017d5@f15g2000pro.googlegroups.com> <4DDFAEC8.531D6882@web.de> <2f847af0-7f62-43d2-aff3-f35f0d42c3ce@l2g2000prg.googlegroups.com> <4DE0E997.42657B4A@web.de> <38011e68-82bb-4ca5-af04-009c2d750e17@q12g2000prb.googlegroups.com>

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David Schwartz wrote:
[...]
> If that's the case, why care about performance since there's clearly
> tons of CPU to spare? Quite the contrary, the case in which you care
> about performance is when all the cores are doing useful work and a
> wasted context switch ejects a useful task and blows away its caches.

You didn't get me: I'm taking about the case with no context
switching/no ejected threads due to blocking (i.e. there is nothing to
blow away).

IOW, assume that you just can't perceive the effect of (supposed)
context switching.

regards,
alexander.

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Thread

cond signal wait p6 c6d6 <p6c6d6@gmail.com> - 2011-05-24 18:56 -0700
  Re: cond signal wait Anthony Williams <anthony.ajw@gmail.com> - 2011-05-25 08:46 +0100
    Re: cond signal wait p6 c6d6 <p6c6d6@gmail.com> - 2011-05-25 05:44 -0700
      Re: cond signal wait Anthony Williams <anthony.ajw@gmail.com> - 2011-05-25 15:57 +0100
        Re: cond signal wait p6 c6d6 <p6c6d6@gmail.com> - 2011-05-25 08:34 -0700
          Re: cond signal wait Anthony Williams <anthony.ajw@gmail.com> - 2011-05-25 16:53 +0100
            Re: cond signal wait Alexander Terekhov <terekhov@web.de> - 2011-05-25 19:16 +0200
          Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-26 09:51 -0700
          Re: cond signal wait Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-26 14:48 -0700
            Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-26 23:20 -0700
              Re: cond signal wait Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-27 14:50 -0700
                Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-27 15:15 -0700
                Re: cond signal wait Alexander Terekhov <terekhov@web.de> - 2011-05-28 15:48 +0200
            Re: cond signal wait Alexander Terekhov <terekhov@web.de> - 2011-05-27 16:01 +0200
              Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-27 12:34 -0700
                Re: cond signal wait Alexander Terekhov <terekhov@web.de> - 2011-05-28 14:24 +0200
                Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-29 01:33 -0700
                Re: cond signal wait Alexander Terekhov <terekhov@web.de> - 2011-05-31 15:32 +0200
                Re: cond signal wait David Schwartz <davids@webmaster.com> - 2011-05-31 14:07 -0700

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