From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751494AbWDYKc5 (ORCPT ); Tue, 25 Apr 2006 06:32:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751073AbWDYKc5 (ORCPT ); Tue, 25 Apr 2006 06:32:57 -0400 Received: from mail.goelsen.net ([195.202.170.130]:63373 "EHLO power2u.goelsen.net") by vger.kernel.org with ESMTP id S1751493AbWDYKc4 (ORCPT ); Tue, 25 Apr 2006 06:32:56 -0400 From: Michael Monnerie Organization: it-management http://it-management.at To: Jan Engelhardt Subject: Re: rtc: lost some interrupts at 256Hz Date: Tue, 25 Apr 2006 12:32:37 +0200 User-Agent: KMail/1.9.1 Cc: "linux-os (Dick Johnson)" , Lee Revell , linux-kernel@vger.kernel.org References: <200604202237.34134@zmi.at> <1145566983.5412.31.camel@mindpipe> In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1304816.k8BvI8KEWy"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200604251232.37939@zmi.at> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1304816.k8BvI8KEWy Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Freitag, 21. April 2006 00:18 Jan Engelhardt wrote: > Does not really matter what userspace app is running. If it's mplayer > the message is "rtc: lost some interrupts at 1024Hz.", and if it's > VMware it's whatever the Guest OS requires, mostly 2000 or 200 Hz. The tipps from vmware support at http://www.vmware.com/support/kb/enduser/std_adp.php?p_sid=3DtthOqz5i&p_lva= =3D&p_faqid=3D1420&p_created=3D1093994398&p_sp=3DcF9zcmNoPTEmcF9ncmlkc29ydD= 0mcF9yb3dfY250PTE3JnBfc2VhcmNoX3RleHQ9bG9zdCBzb21lIGludGVycnJ1cHRzJnBfc2Vhc= mNoX3R5cGU9NyZwX3Byb2RfbHZsMT1_YW55fiZwX3Byb2RfbHZsMj1_YW55fiZwX3NvcnRfYnk9= ZGZsdCZwX3BhZ2U9MQ**&p_li=3D seem to help, didn't get a "lost some interrupts" warning during the=20 last 2 days. But, I got one "many lost ticks" warning: Apr 23 23:06:51 baum kernel: warning: many lost ticks. Apr 23 23:06:51 baum kernel: Your time source seems to be instable or=20 some driver is hogging interupts Apr 23 23:06:51 baum kernel: rip __do_softirq+0x4f/0xd0 What I did was =2D setup VM host OS to 1000HZ, preemptible kernel =2D VM clients use 100HZ, and kernel options "clock=3Dpit nosmp noapic=20 nolapic" =2D VM client kernels are all non-SMP compiled now. Still, some kind of documentation in the Linux source tree would be=20 nice, explaining what that message means and how to fix it. mfg zmi =2D-=20 // Michael Monnerie, Ing.BSc ----- http://it-management.at // Tel: 0660/4156531 .network.your.ideas. // PGP Key: "lynx -source http://zmi.at/zmi3.asc | gpg --import" // Fingerprint: 44A3 C1EC B71E C71A B4C2 9AA6 C818 847C 55CB A4EE // Keyserver: www.keyserver.net Key-ID: 0x55CBA4EE --nextPart1304816.k8BvI8KEWy Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) iD8DBQBETfrFyBiEfFXLpO4RAjnTAJ9AbG/BooGnZf/CWaAhoQhctFxxTgCgg0qb dpwoZJRrZVHIHugVZuFaDmI= =Owaj -----END PGP SIGNATURE----- --nextPart1304816.k8BvI8KEWy--