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Groups > comp.lang.java.programmer > #10360
| From | markspace <-@.> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Thread question |
| Date | 2011-11-30 06:04 -0800 |
| Organization | A noiseless patient Spider |
| Message-ID | <jb5d4v$2k4$1@dont-email.me> (permalink) |
| References | <i9tbd7ppgalucct4i2t2agj9hldjumnmk4@4ax.com> <jb5cbf$t1t$1@dont-email.me> |
On 11/30/2011 5:50 AM, markspace wrote: > On 11/30/2011 1:31 AM, Roedy Green wrote: > >> 1. some sort of throttle on releasing them that I don't swamp the JVM. > > I wouldn't bother. It's actually well known that for fast efficient IO > you should start as many threads as possible. 21 threads aren't going to > swamp anything. > > If you start to have in excess of say 100 to 1000 threads, then maybe > you can think about a throttle. Until there's a chance of that many > threads, you're just gold-plating your software. > > <http://en.wikipedia.org/wiki/Gold_plating_%28software_engineering%29> > Reading the docs carefully, it looks like Executors::newFixedThreadPool might only allocate new threads as it needs them, up to a maximum. Rather than say allocate the maximum number of specified threads immediately. If it does, this would be ideal for throttling your tasks. Even if it doesn't, a relatively small number of threads, say "newFixedThreadPool(50)" is probably much much easier than trying to invent some throttling mechanism yourself. <http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/Executors.html#newFixedThreadPool%28int%29>
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Thread question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 01:31 -0800
Re: Thread question Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-11-30 01:48 -0800
Re: Thread question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 02:32 -0800
Re: Thread question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 02:48 -0800
Re: Thread question Patricia Shanahan <pats@acm.org> - 2011-11-30 03:11 -0800
Re: Thread question Paul Cager <paul.cager@googlemail.com> - 2011-11-30 07:10 -0800
Re: Thread question Patricia Shanahan <pats@acm.org> - 2011-11-30 09:34 -0800
Re: Thread question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 06:10 -0800
Re: Thread question markspace <-@.> - 2011-11-30 06:13 -0800
Re: Thread question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-11-30 11:53 -0800
Re: Thread question Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-11-30 07:28 -0500
Re: Thread question markspace <-@.> - 2011-11-30 05:30 -0800
Re: Thread question Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-11-30 21:04 -0500
Re: Thread question markspace <-@.> - 2011-11-30 18:28 -0800
Re: Thread question markspace <-@.> - 2011-11-30 05:50 -0800
Re: Thread question markspace <-@.> - 2011-11-30 06:04 -0800
Re: Thread question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-11-30 11:48 -0800
Re: Thread question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 13:23 -0800
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