From: reinert <reinkor@gmail.com>
Subject: Re: Large number of tasks slows down my program (using debian) - any fix?
Date: Wed, 28 Mar 2018 13:17:43 -0700 (PDT)
Date: 2018-03-28T13:17:43-07:00 [thread overview]
Message-ID: <cae8d08b-57cf-41dd-a1ac-ac110fdda545@googlegroups.com> (raw)
In-Reply-To: <p9gpv7$1rht$1@gioia.aioe.org>
Seems like "active components/objects" is not so simple as I hoped for.
Sometimes it seems active objects facilitate "effective (natural) representation". But there seems to be restrictions :-)
reinert
On Wednesday, March 28, 2018 at 9:21:14 PM UTC+2, Dmitry A. Kazakov wrote:
> On 2018-03-28 20:06, reinert wrote:
>
> > I use gnat on debian (latest version). Now I tried to initiate a large number of (access) tasks ( "t := new atask_type" ). When I try to start, say, 500 tasks, my program slows down whithout any apparent reason (before the tasks do anything).
>
> 500 tasks is way too many.
>
> > Any hope for a quick fix?
>
> Unlikely. Re-design: use a pool of working tasks, queue jobs to them.
> Use state machines instead of active objects. Switch from blocking I/O,
> to asynchronous/overlapped I/O. Use select socket instead of blocking
> sockets etc.
>
> P.S. co-routines/passive tasks is a way to migrate from the craziness
> you have to a reasonable design without complete re-design.
>
> --
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2018-03-28 20:17 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-28 18:06 Large number of tasks slows down my program (using debian) - any fix? reinert
2018-03-28 18:49 ` Dennis Lee Bieber
2018-03-28 19:06 ` Paul Rubin
2018-03-28 19:21 ` Dmitry A. Kazakov
2018-03-28 20:17 ` reinert [this message]
2018-03-29 8:46 ` reinert
2018-03-29 9:18 ` Dmitry A. Kazakov
2018-03-29 15:39 ` Jeffrey R. Carter
2018-04-15 5:20 ` reinert
2018-03-29 22:33 ` Shark8
2018-03-30 9:04 ` Dmitry A. Kazakov
2018-03-30 20:46 ` Paul Rubin
2018-03-31 0:09 ` Randy Brukardt
2018-03-31 6:00 ` Paul Rubin
2018-03-31 9:37 ` Jacob Sparre Andersen
2018-03-31 10:44 ` Dmitry A. Kazakov
2018-04-02 3:35 ` Randy Brukardt
2018-04-02 6:23 ` alby.gamper
2018-04-02 7:12 ` alby.gamper
2018-04-05 14:07 ` Brad Moore
2018-04-05 15:09 ` Dmitry A. Kazakov
2018-04-07 4:16 ` Brad Moore
2018-04-05 15:30 ` Jeffrey R. Carter
2018-04-05 19:33 ` Spiros Bousbouras
2018-04-05 19:44 ` Simon Wright
2018-04-05 20:25 ` Jeffrey R. Carter
2018-04-06 5:58 ` Benchmarks Game: Thread ring (Was: Large number of tasks slows down my program (using debian) - any fix?) Jacob Sparre Andersen
2018-04-07 4:28 ` Brad Moore
2018-04-06 15:48 ` Large number of tasks slows down my program (using debian) - any fix? Jeffrey R. Carter
2018-04-07 4:39 ` Brad Moore
2018-04-07 8:15 ` Jeffrey R. Carter
2018-04-07 16:28 ` Brad Moore
2018-04-07 18:41 ` Jeffrey R. Carter
2018-04-08 0:29 ` Brad Moore
2018-04-08 8:25 ` Jeffrey R. Carter
2018-04-08 0:06 ` Robert I. Eachus
2018-04-07 16:51 ` Brad Moore
2018-04-07 12:21 ` Simon Wright
2018-04-07 16:57 ` Brad Moore
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