From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 75E3A1391DB for ; Fri, 21 Mar 2014 10:31:54 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C36EAE0B97; Fri, 21 Mar 2014 10:31:48 +0000 (UTC) Received: from mail-bk0-f50.google.com (mail-bk0-f50.google.com [209.85.214.50]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 88754E0B3D for ; Fri, 21 Mar 2014 10:31:47 +0000 (UTC) Received: by mail-bk0-f50.google.com with SMTP id w10so157783bkz.9 for ; Fri, 21 Mar 2014 03:31:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=DAgFpMDE4Hb31G4dCoK0pWFu4JT3slxJIcEwNJzkTOU=; b=R6nlmz6luTQxbrAV6CErOTZfa1tW1rPedbOVaNEhUyL7pd8NpFEY8vxh9UFJYU6/ep 69LKn28k5Bid2qjW7o+od94zXUV1of290Z7oJGO0OP6CZj+bHAmNaijHo+C+dk8V1tea 4aeQh9n/QIltzgd7ikKEf1Iv188/flhHaSiVGms+A5dXQZY7kt6B+oPWyl3HKOGGJduY MDTzj7auWY3twwFzYfLvzegLt0/a6iHvPu11+cAr3vsl9rKlHuSuCQ52RR368Bly3ANI ogLjNP/2kyaSrAnFwHPAVvp/QCcuhOLzMHiDgnvUJRPvcVI+f+MLg9Sy3IIueTQwMNvG nRVg== X-Received: by 10.204.180.135 with SMTP id bu7mr9955904bkb.20.1395397905982; Fri, 21 Mar 2014 03:31:45 -0700 (PDT) Received: from [192.168.178.21] (pD952CB15.dip0.t-ipconnect.de. [217.82.203.21]) by mx.google.com with ESMTPSA id xj2sm4790149bkb.15.2014.03.21.03.31.44 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 21 Mar 2014 03:31:45 -0700 (PDT) Message-ID: <532C1510.5060702@googlemail.com> Date: Fri, 21 Mar 2014 11:31:44 +0100 From: Volker Armin Hemmann User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Kworker use >80% of CPU References: <20140307194912.70c0acba@gentoo.org> <20140320112411.3e6baf60@gentoo.org> In-Reply-To: <20140320112411.3e6baf60@gentoo.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: d11bf543-3ccf-4a2c-9072-f97c7edae435 X-Archives-Hash: 059a0d8ed8e605daece46e9ecb23c374 Am 20.03.2014 11:24, schrieb Tom Wijsman: > On Thu, 20 Mar 2014 11:39:58 +0400 > Gleb Klochkov wrote: > >> Tom, thank you for your answer. >> >> $ dmesg >> http://bpaste.net/show/187533/ > There this can be seen: > > [ 18.074574] [drm] Wrong MCH_SSKPD value: 0x16040307 > [ 18.074575] [drm] This can cause pipe underruns and display > issues. > [ 18.074575] [drm] Please upgrade your BIOS to fix this. > [ 18.148162] [drm] GMBUS [i915 gmbus vga] timed out, falling back > to bit banging on pin 2 > > Above your messages seem interesting; some expected value is wrong, it > also times out on a bus and then goes to use a pin instead. Not sure > how much of this is intended, but try to upgrade your BIOS as suggested. > >> $ cat /proc/interrupts >> http://bpaste.net/show/187537/ > So, that would be this: > > 8: 63 0 0 0 IO-APIC-edge rtc0 > > Hmm, nothing about it in the dmesg; also, 63 seems low (on my system, > however, it's only 1 as I think my system uses something different). > > You can try a different timer using this kernel parameter: > > clocksource=hpet > > Another note-worthy thing: > > 9: 699799454 0 0 0 IO-APIC-fasteoi acpi > > That there are ~700 million ACPI interrupts seems abnormally high; > maybe the count is off by one, and 8 refers to 9? On my system, that's > been running for a while by now, it's only at ~6000 (six thousand). uptime 11:29:37 up 49 days, 15:48, 16 users, load average: 0,38, 0,31, 0,39 8: 0 0 0 48 IO-APIC-edge rtc0 9: 0 0 0 0 IO-APIC-fasteoi acpi > > Changing the ACPI related kernel parameters to try to get it supported > differently might be one thing to do here; other than that, it might be > something going on with the hardware (try disconnecting things?) so the > BIOS upgrade is certainly of interest. > > Try the BIOS upgrade first, then play around with the parameters; if > things don't work out, I suggest you look for support on one of the > Linux kernel mailing lists (perhaps acpi-devel*). Good luck. > > * https://lists.sourceforge.net/lists/listinfo/acpi-devel > imho he should first use a recent VANILLA kernel. 2.12 or 2.13. And build a config without all that unneeded garbage. Also increase the dmesg buffer. Most interesting stuff is missing.