Re: Fwd: x86_64 and AMD with C1E

From: Andi Kleen
Date: Mon Oct 01 2007 - 10:32:41 EST


> There is work in progress on a patch, which allows to utilize the hpet
> timers as per cpu timers. This should solve the problem. Be patient.

Given that e.g. ICH8 only has 3 HPET timers that seems doubtful
except for the special case of single-socket non hyper threaded dual core.
You'll probably do a lot of broadcasting and IPI'ing still.

Also you'll likely make user space unhappy which often requires
at least one free HPET timer for /dev/rtc. Ok I suppose that
could be replaced with a hrtimer.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/