Comment 109 for bug 355155

Revision history for this message
Sir Romanov (romain-couillet) wrote : Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty

I have a reproducible pattern: on kernel 2.6.30-rc6, I get these

[ 0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601)
[ 0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 0.881597] EDD information not available.
[ 1.000049] Clocksource tsc unstable (delta = -112215141 ns)

everytime ONE second after boot. I attach lscpi, and a complete dmesg.

The patterns are highly similar :

May 23 10:21:14 laptop kernel: [ 0.881659] rtc_cmos 00:03: setting system clock to 2009-05-23 08:20:35 UTC (1243066835)
May 23 10:21:14 laptop kernel: [ 0.881720] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
May 23 10:21:14 laptop kernel: [ 0.881772] EDD information not available.
May 23 10:21:14 laptop kernel: [ 1.000146] Clocksource tsc unstable (delta = -112013565 ns)
--
May 23 11:13:47 laptop kernel: [ 0.877902] rtc_cmos 00:03: setting system clock to 2009-05-23 09:13:06 UTC (1243069986)
May 23 11:13:47 laptop kernel: [ 0.877963] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
May 23 11:13:47 laptop kernel: [ 0.878014] EDD information not available.
May 23 11:13:47 laptop kernel: [ 1.000223] Clocksource tsc unstable (delta = -116434829 ns)
--
May 23 20:32:25 laptop kernel: [ 0.898544] rtc_cmos 00:03: setting system clock to 2009-05-23 18:31:46 UTC (1243103506)
May 23 20:32:25 laptop kernel: [ 0.898605] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
May 23 20:32:25 laptop kernel: [ 0.898652] EDD information not available.
May 23 20:32:25 laptop kernel: [ 1.000094] Clocksource tsc unstable (delta = -87870418 ns)
--
May 23 21:57:21 laptop kernel: [ 0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601)
May 23 21:57:21 laptop kernel: [ 0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
May 23 21:57:21 laptop kernel: [ 0.881597] EDD information not available.
May 23 21:57:21 laptop kernel: [ 1.000049] Clocksource tsc unstable (delta = -112215141 ns)