From: Michael Monnerie <michael.monnerie@it-management.at>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: "linux-os (Dick Johnson)" <linux-os@analogic.com>,
Lee Revell <rlrevell@joe-job.com>,
linux-kernel@vger.kernel.org
Subject: Re: rtc: lost some interrupts at 256Hz
Date: Tue, 25 Apr 2006 12:32:37 +0200 [thread overview]
Message-ID: <200604251232.37939@zmi.at> (raw)
In-Reply-To: <Pine.LNX.4.61.0604210012530.28841@yvahk01.tjqt.qr>
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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=tthOqz5i&p_lva=&p_faqid=1420&p_created=1093994398&p_sp=cF9zcmNoPTEmcF9ncmlkc29ydD0mcF9yb3dfY250PTE3JnBfc2VhcmNoX3RleHQ9bG9zdCBzb21lIGludGVycnJ1cHRzJnBfc2VhcmNoX3R5cGU9NyZwX3Byb2RfbHZsMT1_YW55fiZwX3Byb2RfbHZsMj1_YW55fiZwX3NvcnRfYnk9ZGZsdCZwX3BhZ2U9MQ**&p_li=
seem to help, didn't get a "lost some interrupts" warning during the
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
some driver is hogging interupts
Apr 23 23:06:51 baum kernel: rip __do_softirq+0x4f/0xd0
What I did was
- setup VM host OS to 1000HZ, preemptible kernel
- VM clients use 100HZ, and kernel options "clock=pit nosmp noapic
nolapic"
- VM client kernels are all non-SMP compiled now.
Still, some kind of documentation in the Linux source tree would be
nice, explaining what that message means and how to fix it.
mfg zmi
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next prev parent reply other threads:[~2006-04-25 10:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-20 20:37 rtc: lost some interrupts at 256Hz Michael Monnerie
2006-04-20 20:57 ` linux-os (Dick Johnson)
2006-04-20 21:03 ` Lee Revell
2006-04-20 22:18 ` Florian Schmidt
2006-04-20 22:18 ` Jan Engelhardt
2006-04-20 22:22 ` Lee Revell
2006-04-21 8:52 ` Michael Monnerie
2006-04-25 10:32 ` Michael Monnerie [this message]
2006-05-07 17:59 ` Lee Revell
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