Lost Ticks - TSC Timer - AMD 64 X2 Processor - What's up with that?

Lost Ticks - TSC Timer - AMD 64 X2 Processor - What's up with that?

[Marc Perkel]

Having timer problems. About to head to the data center to try different 
things to get this server to work right. Losing ticks and clock is all 
over the place and doing obscene things to keep it almost on track - but 
I really need a solution.

Running 2.6.13.1 Kernel - FC4 Linux - Asus Motherboard - A8N-SLI 
Premium. Athlon X2 4400+ with 4 gigs of ram and it uses some sort of 
memory remapping to use the full 4 gigs.

I don't understand all the different timers. There's TSC and PM and what 
else?

Someone suggested "notsc" which I will try when I get there. But  - 
looking for a list of other things to try as well. I have flashed the 
latest BIOS.

I'm thinking about giving up and going back to DOS. I didn't have these 
problem with DOS - and DOS boots faster. ;)

Tell me about all these timers - what are my choices - and what is most 
likely to actually work.

Thanks in advance.

-- 
Marc Perkel - marc@perkel.com

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    My Blog: http://marc.perkel.com

Re: Lost Ticks - TSC Timer - AMD 64 X2 Processor - What's up with that?

[Andrew Morton]

Marc Perkel <marc@perkel.com> wrote:
>
> Having timer problems. About to head to the data center to try different 
> things to get this server to work right. Losing ticks and clock is all 
> over the place and doing obscene things to keep it almost on track - but 
> I really need a solution.
> 
> Running 2.6.13.1 Kernel - FC4 Linux - Asus Motherboard - A8N-SLI 
> Premium. Athlon X2 4400+ with 4 gigs of ram and it uses some sort of 
> memory remapping to use the full 4 gigs.
> 
> I don't understand all the different timers. There's TSC and PM and what 
> else?
> 
> Someone suggested "notsc" which I will try when I get there. But  - 
> looking for a list of other things to try as well. I have flashed the 
> latest BIOS.
> 
> I'm thinking about giving up and going back to DOS. I didn't have these 
> problem with DOS - and DOS boots faster. ;)
> 
> Tell me about all these timers - what are my choices - and what is most 
> likely to actually work.
> 

Grab a coffee, go read http://bugzilla.kernel.org/show_bug.cgi?id=5105

Using "clock=pit" might help.