From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: milliseconds and delay until
Date: Thu, 12 Jun 2003 08:20:43 +0200
Date: 2003-06-12T08:20:43+02:00 [thread overview]
Message-ID: <bc95v4$g2afa$1@ID-77047.news.dfncis.de> (raw)
In-Reply-To: x7vu1aw4co2.fsf@pushface.org
Simon Wright wrote:
> NB!! on most desktop machines you'll get a minimum actual delay of 10
> ms (a tick) or even 2 ticks; what happens, I think, is that many of
> the "delay until"s turn out to be delaying until a time that has
> already passed, so the program spins until it catches up.
It is a complicated issue which depends on great variety of factors [OS,
whether Ada RT uses native threads etc.]
But usually I would expect a better performance. [Even under Windows NT,
where the time slicing quant is 10ms, one can force it to 1ms. Under 2k/XP
it is already 1ms.]
--
Regards,
Dmitry A. Kazakov
www.dmitry-kazakov.de
next prev parent reply other threads:[~2003-06-12 6:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-11 18:31 milliseconds and delay until Thomas Bruns
2003-06-11 18:46 ` Jano
2003-06-11 18:58 ` Thomas Bruns
2003-06-11 19:29 ` Jano
2003-06-11 19:49 ` Simon Wright
2003-06-11 20:29 ` tmoran
2003-06-12 6:20 ` Dmitry A. Kazakov [this message]
2003-06-11 19:59 ` Frank J. Lhota
2003-06-12 3:06 ` Steve
2003-06-12 20:26 ` Simon Wright
2003-06-12 21:41 ` Martin Dowie
2003-06-14 6:04 ` Simon Wright
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