lkml.org 
[lkml]   [2013]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Preemptable Ticket Spinlock
On 04/22/2013 04:48 PM, Peter Zijlstra wrote:

> Hmm.. it looked like under light overcommit the paravirt ticket lock
> still had some gain (~10%) and of course it brings the fairness thing
> which is always good.
>
> I can only imagine the mess unfair + vcpu preemption can bring to guest
> tasks.

If you think unfairness + vcpu preemption is bad, you haven't
tried full fairness + vcpu preemption :)

--
All rights reversed


\
 
 \ /
  Last update: 2013-04-23 01:01    [W:0.084 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site