[lkml]   [2009]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH 0/4] timers: framework for migration between CPU

* Vaidyanathan Srinivasan <> wrote:

> My understanding is that we will certainly have a sysfs
> tunable to 'enable' timer migration or consolidation, similar
> to the sched_mc=2 policy, but the actual set of CPUs to
> evacuate and the correct set of target CPUs to consolidate
> should come from the scheduler and not necessarily from the
> user space.


> The scheduler should be able to figure out the following
> parameters:
> * Identify set of idle CPUs (CPU package) from which timers
> can be removed
> * Identify a semi-idle or idle CPU package to which the timers
> can be moved
> * Decide when to start moving timers as the system has large
> number of idle CPUs
> * Decide when to stop migrating as system becomes less idle
> and utilisation increases
> Guiding all of the above decisions from user space may not be
> fast enough.



 \ /
  Last update: 2009-02-23 12:11    [W:0.088 / U:16.152 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site