Messages in this thread | | | Date | Wed, 14 Jan 2009 23:34:08 +0100 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] adaptive spinning mutexes |
| |
* Kay Sievers <kay.sievers@vrfy.org> wrote:
> On Wed, Jan 14, 2009 at 22:41, Ingo Molnar <mingo@elte.hu> wrote: > > > > * Ingo Molnar <mingo@elte.hu> wrote: > > > >> > You just disproved your own case :( > >> > >> how so? 80% is not enough? I also checked Fedora and it has > >> SCHED_DEBUG=y in its kernel rpms. > > > > Ubuntu has CONFIG_SCHED_DEBUG=y as well in their kernels. > > $ cat /etc/SuSE-release > openSUSE 11.1 (x86_64) > VERSION = 11.1 > > $ uname -a > Linux nga 2.6.27.7-9-default #1 SMP 2008-12-04 18:10:04 +0100 x86_64 > x86_64 x86_64 GNU/Linux > > $ zgrep SCHED_DEBUG /proc/config.gz > CONFIG_SCHED_DEBUG=y > > $ zgrep DEBUG_MUTEX /proc/config.gz > # CONFIG_DEBUG_MUTEXES is not set
Fedora has mutex debugging disabled too:
# CONFIG_DEBUG_MUTEXES is not set
So the 3 main Linux distros, generating ~95% of the kerneloops.org feedback traffic, all have SCHED_DEBUG=y, and at least two have !DEBUG_MUTEXES. (possibly Ubuntu has that disabled it too)
Ingo
| |