[lkml]   [2005]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] i386 No Idle HZ aka dynticks 051221

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?

[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2005-12-26 21:06    [W:0.082 / U:4.900 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site