From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Large number of tasks slows down my program (using debian) - any fix?
Date: Wed, 28 Mar 2018 21:21:13 +0200
Date: 2018-03-28T21:21:13+02:00 [thread overview]
Message-ID: <p9gpv7$1rht$1@gioia.aioe.org> (raw)
In-Reply-To: 1aa8f536-250d-4bef-9392-4d936f916e5f@googlegroups.com
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 19:21 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 [this message]
2018-03-28 20:17 ` reinert
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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