[lkml]   [2010]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 4/4, v2] x86: enlightenment for ticket spin locks - improve yield behavior on Xen
On Tue, 2010-06-29 at 15:35 +0100, Jan Beulich wrote:
> The (only) additional overhead this introduces for native execution is
> the writing of the owning CPU in the lock acquire paths.

Uhm, and growing the size of spinlock_t to 6 (or 8 bytes when aligned)
bytes when NR_CPUS>256.

 \ /
  Last update: 2010-06-30 10:13    [W:0.041 / U:1.144 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site