Arch Linux

drl

Member

From: St Paul, Minnesota, USA

Registered: 2006-06-05

Posts: 2

VMWare, rtc lost messages

Hi.

I often received messages like:

Jan 11 14:02:09 lunk kernel: rtc: lost some interrupts at 1024Hz.
Jan 11 14:02:09 lunk kernel: rtc: lost some interrupts at 2048Hz.
Jan 11 14:02:20 lunk last message repeated 548 times

With this guest environment :

OS, ker|rel, machine: Linux, 2.6.27-ARCH, i686
Distribution        : Arch Linux (Don't Panic)

The VMWare host is Debian etch on a Dell PowerEdge SC1420 server.

This is not an uncommon problem, but the usual suspects placed on the kernel line did not work for me:

clocksource=pic nosmp noapic nolapic

I found one reference here in the forum to acpi_pm (but not that I could tell with VMWare):

clocksource=acpi_pm

Placing that on the kernel line cured the problem, sort of.  The clock rate wanders around a bit, and there are still some messages when I start the desktop -- xfce4 -- but eventually things settle down.

I'm posting this in case someone else runs into the problem ... cheers, drl

kjon

Member

From: Temuco, Chile

Registered: 2008-04-16

Posts: 398

Re: VMWare, rtc lost messages

For me, my solution was even easier. I just added clocksource=pit nohz=off and problem solved.

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They say that if you play a Win cd backward you hear satanic messages. That's nothing! 'cause if you play it forwards, it installs windows.

drl

Member

From: St Paul, Minnesota, USA

Registered: 2006-06-05

Posts: 2

Re: VMWare, rtc lost messages

Hi, kjon.

That's a combination I did not try.  Just now I found a note regarding the kernel on Fedora:

Sometimes multiple options are needed, e.g. clocksource=acpi_pm nohz=off highres=off ...
-- http://fedoraproject.org/wiki/KernelCommonProblems

but since the single setting seems to work for me on Arch, I'll keep that.  I may try your solution later.  Thanks for the reply ... cheers, drl

kjon

Member

From: Temuco, Chile

Registered: 2008-04-16

Posts: 398

Re: VMWare, rtc lost messages

ok! feel free to try

---

They say that if you play a Win cd backward you hear satanic messages. That's nothing! 'cause if you play it forwards, it installs windows.