[MPlayer-users] [bug] segfault when tsc is disabled by the kernel

Mathieu tenfingers at ifrance.com
Sat Nov 8 16:44:09 CET 2003


++ 08/11/03 - D Richard Felker III:
> > I have a laptop running a linux kernel 2.4.22 on an intel pentium 4
> > mobile. My kernel is configured with the Unsynced TSC support option
> > ( CONFIG_X86_TSC_DISABLE ) and with notsc as a boot option. As a result, 
> > TSC is disabled by the kernel though the processor could make it available.
> > 
> Is there a reason you _need_ to disable tsc? AFAIK this will seriously
> hurt precise timing in all apps, including any movie player.
> 
> Rich

yes, definitely
if TSC is enabled, my clock tends to backtick and this makes
gettimeofday to return non-monotonic values (as if time went backwards !). 
this makes one SDL apps i am using to crash.

as for the timing, i have /dev/rtc enabled, i hope it is sufficient


mathieu



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