Date: Fri, 27 Aug 2010 20:12:56 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Doug Barton <dougb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: runaway intr problems: powerd and/or hw.acpi.cpu.cx_lowest related Message-ID: <4C77F218.9060901@icyb.net.ua> In-Reply-To: <4C77E582.5080706@FreeBSD.org> References: <4C71E858.90009@FreeBSD.org> <4C721334.1050000@icyb.net.ua> <4C7219B2.4070303@FreeBSD.org> <4C722209.1020405@icyb.net.ua> <4C72297D.90104@FreeBSD.org> <4C722ADD.1030103@icyb.net.ua> <4C7234A1.3050108@FreeBSD.org> <4C7792A1.9090909@icyb.net.ua> <4C77E582.5080706@FreeBSD.org>
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on 27/08/2010 19:19 Doug Barton said the following: > Yes, it improved things greatly. I first ran with just powerd for several hours > and that worked fine. The next day I was able to use powerd and cx_lowest=C2 for > the better part of a day (including watching a few flash videos). By the end of > the day intr started to run away again, so not out of the woods yet, but at least > this shows we're going in the right direction. Also, while poking around in the > BIOS settings I noticed in one of the "information only" screens that I don't > usually visit one line about the "minimum cpu speed" is 1.00 GHz, which the sysctl > output above seems to verify. So where the throttling code was getting all those > other numbers I don't know. > > Meanwhile I've actually not been running FreeBSD for most of this week I've been > working on re-partitioning my new disk and running ubuntu. So 2 interesting pieces > of information there, first the "CPU Frequency Scaling Monitor" for the gnome that > comes with ubuntu never goes below 1 GHz, so that bit seems extra verified. > Second, I can watch all the flash videos I want while doing other stuff in the > background (like restoring the backups of my data) without any problems, so add > that to windows in terms of OS' that work on this same hardware. Now that I have > finally figured out how to boot windows, linux, and 2 FreeBSDs on the same disk > I'll be able to set up 7-stable i386 and 9-current amd64 to see how they compare > to the 9-current i386 I was using previously; so I should have more information in > a few days. Cool! Meanwhile can you double-check what timers does Linux use there? (No idea how to do that, especially if it's NO_HZ kernel). -- Andriy Gapon
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