Peter Williams wrote:
Peter Williams wrote:
This version features a major gutting of the SPA based schedulers to
reduce overhead. The inclusion of the mechanisms for gathering and
displaying accrued scheduling statistics have been made a compile time
configurable option (default is exclusion) as they are not an integral
part of the scheduler and were mainly there to help with tuning. In a
future version they will be removed completely.
Additionally, the mechanism for auto detection and preferential
treatment of media streamers in the spa_ws scheduler has been made a
compile time option (default is exclusion). The reason for this is
that my testing shows that the performance of media streamers on
spa_ws is adequate without it. This will also be removed in a future
version unless requested otherwise.
A patch for 2.6.15-rc5 is available at:
<http://prdownloads.sourceforge.net/cpuse/plugsched-6.1.6-for-2.6.15-rc5.patch?download>
Applies cleanly to 2.6.15-rc7 so no new patch will be posted.
And the 2.6.15 official release.
and a patch for 2.6.15-rc5-mm2 is available at:
<http://prdownloads.sourceforge.net/cpuse/plugsched-6.1.6-for-2.6.15-rc5-mm2.patch?download>
Very Brief Documentation:
You can select a default scheduler at kernel build time. If you wish to
boot with a scheduler other than the default it can be selected at boot
time by adding:
cpusched=<scheduler>
to the boot command line where <scheduler> is one of: ingosched,
nicksched, staircase, spa_no_frills, spa_ws, spa_svr or zaphod. If you
don't change the default when you build the kernel the default scheduler
will be ingosched (which is the normal scheduler).
The scheduler in force on a running system can be determined by the
contents of:
/proc/scheduler
Control parameters for the scheduler can be read/set via files in:
/sys/cpusched/<scheduler>/
Peter
--
Peter Williams [email protected]
"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce
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