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Groups > comp.lang.java.programmer > #22304

Re: nThreads

From Roedy Green <see_website@mindprod.com.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: nThreads
Date 2013-02-14 03:43 -0800
Organization Canadian Mind Products
Message-ID <t5jph8t28b7jso50af7b9m4krmttn8s1cq@4ax.com> (permalink)
References <e8f7a805-da38-4882-8037-2c964982abd1@googlegroups.com> <3snmg3r1o72q$.gtsip45yf6q5.dlg@40tude.net>

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On Thu, 14 Feb 2013 00:46:50 +0100, Joerg Meier <joergmmeier@arcor.de>
wrote, quoted or indirectly quoted someone who said :

>While modern operating systems support thousands of threads, there are
>really not many advantages in using more threads than you have CPUs/cores,

It pays to have more threads than cores if your threads are probing
websites.  You want to have enough waiting to keep your port busy. You
can also do that in more efficient but complicated way with a single
thread that processes the next response in turn.

Your advice would apply for CPU intensive tasks.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
The first 90% of the code accounts for the first 90% of the development time.
The remaining 10% of the code accounts for the other 90% of the development 
time. 
~ Tom Cargill  Ninety-ninety Law 

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Thread

nThreads bob smith <bob@coolfone.comze.com> - 2013-02-13 15:25 -0800
  Re: nThreads Joerg Meier <joergmmeier@arcor.de> - 2013-02-14 00:46 +0100
    Re: nThreads Roedy Green <see_website@mindprod.com.invalid> - 2013-02-14 03:43 -0800
    Re: nThreads Arne Vajhoej <arne@vajhoej.dk> - 2013-02-15 08:56 -0500
  Re: nThreads markspace <markspace@nospam.nospam> - 2013-02-13 16:06 -0800
    Re: nThreads Joerg Meier <joergmmeier@arcor.de> - 2013-02-14 01:46 +0100
      Re: nThreads Lew <lewbloch@gmail.com> - 2013-02-13 17:27 -0800
      Re: nThreads Robert Klemme <shortcutter@googlemail.com> - 2013-02-14 22:19 +0100
      Re: nThreads Arne Vajhoej <arne@vajhoej.dk> - 2013-02-15 08:59 -0500
  Re: nThreads Roedy Green <see_website@mindprod.com.invalid> - 2013-02-13 18:37 -0800
    Re: nThreads Arne Vajhoej <arne@vajhoej.dk> - 2013-02-15 09:01 -0500
  Re: nThreads Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-02-14 07:07 -0400
  Re: nThreads Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-02-14 09:55 -0800
  Re: nThreads Arne Vajhoej <arne@vajhoej.dk> - 2013-02-15 08:55 -0500

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