[Xen-devel] Time went backwards 885 ms

[Carsten Schiers <carsten@xxxxxxxxxx>]

Dear all,

I thought this might be worth again to report:

After rebooting a 3.3.1/2.6.18.8 environment on my AMD 4050e, I received a 885ms delta just
after powernow-k8 loaded:

Mar 26 21:28:37 data kernel: powernow-k8: Found 2 AMD Athlon(tm) Dual Core Processor 4050e processors (version 2.20.00)
Mar 26 21:28:37 data kernel: powernow-k8:    0 : fid 0xd (2100 MHz), vid 0xe
Mar 26 21:28:37 data kernel: powernow-k8:    1 : fid 0xc (2000 MHz), vid 0xf
Mar 26 21:28:37 data kernel: powernow-k8:    2 : fid 0xa (1800 MHz), vid 0x11
Mar 26 21:28:37 data kernel: powernow-k8:    3 : fid 0x2 (1000 MHz), vid 0x16
Mar 26 21:28:37 data kernel: Timer ISR/1: Time went backwards: delta=-885437842 delta_cpu=6562158 shadow=11822142480 off=436198 processed=12708016520 cpu_p
rocessed=11816016520
Mar 26 21:28:37 data kernel:  0: 12704016520
Mar 26 21:28:37 data kernel:  1: 11816016520

Find full xm dmesg, xm info, and syslog of boot attached.

Otherwise, the environment is more stable; Time went backwards appear roughly every 2-3 days,
mostly when there is a 1,0->2,1GHz jump when munin asks for CPU. It is reduced in addition by a
4 sec sampling time of the ondemand govenor.

Will test 3.4 as soon as released.

BR,
Carsten.

syslog.txt
Description: Text document

xmdmesg.txt
Description: Text document

xminfo.txt
Description: Text document

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