linux-kernel - Re: Linux VM completely lost it`s timesource !?

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Date:	Sat, 02 Feb 2008 14:12:40 +0100
From:	devzero@....de
To:	linux-kernel@...r.kernel.org
Cc:	dhecht@...are.com, tglx@...utronix.de
Subject: Re: Linux VM completely lost it`s timesource !?

cat /sys/devices/system/clocksource/clocksource0/current_clocksource
acpi_pm

cannot switch to any other clocksource, "echo tsc|jiffies|pit >current_clocksource" doesn`t have any effect. 
current_clocksource stays at acpi_pm

maybe somebody has a clue what to check besides this?

thanks
roland


>I`m running 2.6.24 kernel in a recent version of vmware workstation and i`m unsure if \
>i hit a linux issue or a vmware issue here.
>
>after suspend/resume (hibernate) of my physical system (win xp), the linux guest \
>seems to have lost itŽs timesource.
>
>don`t know much about timers in linux, so let me explain first:
>
>the guest was running when i suspended the xp host.
>the xp host is running fine after resume.
>the guest has issues.
>
>triggering a console beep inside the linux VM now doesn`t give a short beep but \
>terrorizing me with a never-ending continuous beep.
>
>seems to be a timer issue inside the guest, since tools like top, vmstat, watch etc \
>don`t work anymore. the system clock gone crazy, too - it`s counting from 22:40:47 to \
>22:40:51 and then constantly jumps back to 22:40:47
>
>can someone give an advice what to check to make sure that this is NOT a linux issue \
>? i will contact vmware then afterwards.
>
>regards
>roland
>
>ps:
>i did a snapshot of the VM and could preserve the state of the system this way.
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