From: Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
To: "linux-os (Dick Johnson)" <linux-os@analogic.com>
Cc: Ram Gupta <ram.gupta5@gmail.com>,
linux mailing-list <linux-kernel@vger.kernel.org>
Subject: Re: select takes too much time
Date: Thu, 13 Apr 2006 23:20:28 +0200 [thread overview]
Message-ID: <443EC09C.2050409@stud.feec.vutbr.cz> (raw)
In-Reply-To: <Pine.LNX.4.61.0604131701030.7732@chaos.analogic.com>
linux-os (Dick Johnson) wrote:
> It is as though the sleep time is always at least 1000
> microseconds. If this is correct, then there should be some kind of
> warning that the time can't be less than the HZ value, or whatever is
> limiting it.
Of course you can't get lower resolution than 1/HZ, unless you're using
a kernel with high-res timers. It's always been like that.
But it's not Ram's problem, because he's requesting a timeout of 90ms,
which is much longer than one tick even with HZ=100.
Michal
next prev parent reply other threads:[~2006-04-13 21:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-13 15:01 select takes too much time Ram Gupta
2006-04-13 15:30 ` Andreas Mohr
2006-04-13 16:11 ` Ram Gupta
2006-04-20 9:01 ` Denis Vlasenko
2006-05-01 17:00 ` Ram Gupta
2006-04-13 15:56 ` linux-os (Dick Johnson)
2006-04-13 18:29 ` Jan Knutar
2006-04-13 18:36 ` Michal Schmidt
2006-04-13 19:51 ` Ram Gupta
2006-04-13 21:08 ` linux-os (Dick Johnson)
2006-04-13 21:18 ` Nish Aravamudan
2006-04-13 21:20 ` Michal Schmidt [this message]
2006-04-14 14:54 ` Ram Gupta
2006-04-14 14:56 ` linux-os (Dick Johnson)
2006-04-14 21:45 ` Jan Engelhardt
2006-04-17 15:55 ` Ram Gupta
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