Messages in this thread | | | Date | Mon, 26 Dec 2005 21:03:19 +0100 | From | Dominik Brodowski <> | Subject | Re: [PATCH] i386 No Idle HZ aka dynticks 051221 |
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Hi,
On Sun, Dec 25, 2005 at 09:55:26PM -0500, Theodore Ts'o wrote: > Looking at acpi/processor_idle.c, there is all sorts of magic special > cases code for the C2 and C3 states (both for promotion/demotion > polcies, as well as what to do when idling in those particular > states), and which doesn't exist for other states, such as C4.
The magic is for C2- and C3-_type_ sleep, and C4 is of type C3... I know, this numbering is very confusing, but that's the way it is... However, the sepcially added "magic" for dyntick still needs some tweaking; I'll try to improve (and hopefully streamline) it a bit. As a first test, could you remove the "Fast-path demotion" case and re-test?
Thanks, Dominik [unhandled content-type:application/pgp-signature] | |