Date: Thu, 14 Feb 2008 23:35:50 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: Kevin Oberman <oberman@es.net> Cc: freebsd-acpi@freebsd.org Subject: Re: cx_lowest and CPU usage Message-ID: <47B4B436.6020906@icyb.net.ua> In-Reply-To: <20080214211952.A392B4500F@ptavv.es.net> References: <20080214211952.A392B4500F@ptavv.es.net>
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on 14/02/2008 23:19 Kevin Oberman said the following: > > It certainly blocks ever reaching C3 because of the continual activity > it generates, but I can see that it might also increase the interrupt > time while in C2. That said, I just did some testing on my laptop in C2 > and, while I see a small increase in interrupt load, it is not anywhere > near what is being reported in this thread. Kevin, a lot also depends on how idle/interrupt/user/etc is calculated. See my recent post to -hackers. When I had only an intuitive feeling of how those things are calculated I also suspected that some extra calls, transition times, etc might be to blame. But after I briefly looked through the code my opinion was somewhat altered. -- Andriy Gapon
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