[ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[Peter Williams]

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>

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                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce

Re: [ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[Peter Williams]

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> 
> 
> 
> 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> 

This applies cleanly to 2.6.15-rc5-mm3 so no new patch for that kernel 
will be posted.

> 
> 
> 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                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce

Re: [ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[Peter Williams]

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> 

Also applies cleanly to 2.6.15-rc6.

> 
> 
> 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                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce

Re: [ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[Peter Williams]

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 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                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce

Re: [ANNOUNCE][RFC] PlugSched-6.1.6 for 2.6.15-rc5 and 2.6.15-rc5-mm2

[Peter Williams]

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                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce