From: Tim Blechmann <tim@klingt.org>
To: linux-kernel@vger.kernel.org
Cc: Daniel J Blueman <daniel.blueman@gmail.com>,
Arjan van de Ven <arjan@infradead.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: tickless and HZ=1000 throughput advantage?
Date: Sun, 20 Sep 2009 09:34:30 +0200 [thread overview]
Message-ID: <4AB5DB06.1090100@klingt.org> (raw)
In-Reply-To: <1253401950.7587.7.camel@ben-desktop>
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On 09/20/2009 01:12 AM, Ben Nizette wrote:
> On Sat, 2009-09-19 at 18:50 +0100, Daniel J Blueman wrote:
>
>> Agreed. Do you think there is still a small case for moving to HZ=1000
>> (given it's effectively free) in situations like:
>
> Sure HZ=1000 gives you more accurate sleeps, that's kind of the point,
> but since when has it been "effectively free"?
> http://lwn.net/Articles/331607/
i'd be curious, what effect does it have on userspace applications?
like, does it effect the wakeup latency of userspace (pthread)
mutexes/conditions or posix semaphores?
thnx, tim
--
tim@klingt.org
http://tim.klingt.org
Desperation is the raw material of drastic change. Only those who can
leave behind everything they have ever believed in can hope to escape.
William S. Burroughs
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next prev parent reply other threads:[~2009-09-20 7:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-19 14:47 tickless and HZ=1000 throughput advantage? Daniel J Blueman
2009-09-19 14:55 ` Arjan van de Ven
2009-09-19 17:50 ` Daniel J Blueman
2009-09-19 23:12 ` Ben Nizette
2009-09-20 7:34 ` Tim Blechmann [this message]
2009-09-20 7:40 ` Arjan van de Ven
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