From: Pavel Machek <pavel@ucw.cz>
To: George Anzinger <george@mvista.com>
Cc: "'high-res-timers-discourse@lists.sourceforge.net'"
<high-res-timers-discourse@lists.sourceforge.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [ANNOUNCE] VST (tick elimination) is now available
Date: Tue, 14 Oct 2003 13:02:19 +0200 [thread overview]
Message-ID: <20031014110218.GA20211@elf.ucw.cz> (raw)
In-Reply-To: <3F873067.9020805@mvista.com>
Hi!
> The first release of the VST package is now available. VST or
> Variable Scheduling Timeouts (or if you prefer, Variable Sleep Times)
> contains code that, from the idle task, scans the timer list and, if
> no timer is near, skips the timer interrupts that would otherwise be
> generated. The patch name is hrtimers-vst-*
>
> The net result is that a quite system will use far less power as it
> does not need to wake up ever 1/HZ timer tick.
Do you have some measurements of how much power does it save? Making
Sharp Zaurus run longer on batteries would certainly be nice ;-).
Pavel
--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
next prev parent reply other threads:[~2003-10-14 11:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-10 22:19 [ANNOUNCE] VST (tick elimination) is now available George Anzinger
2003-10-14 11:02 ` Pavel Machek [this message]
2003-10-14 12:41 ` George Anzinger
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