Messages in this thread | | | Date | Tue, 08 Nov 2005 09:01:46 +1100 | From | Peter Williams <> | Subject | Re: [ANNOUNCE][RFC] PlugSched-6.1.3 for 2.6.13 and 2.6.14-rc4 |
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Peter Williams wrote: > This version contains a new scheduler, spa_svr, which is a minor > extension of spa_no_frills intended for use on servers. It makes no > attempt to improve interactive responsiveness but includes a simplified > version of the throughput bonus mechanism found in Zaphod. This > mechanism attempts to minimize the time tasks spend on run queues > waiting for CPU access when the system is moderately loaded by giving > tasks temporary priority bonuses based on the relationship between the > recent average time spent on run queues and on a cpu per cycle. > (Although it's effectiveness tends to disappear when the system is fully > loaded, it is still useful as considerable delay can be seen on systems > with quite low average loads due to lack of serendipity.) > > A patch for 2.6.14-rc4 is available at: > > <http://prdownloads.sourceforge.net/cpuse/plugsched-6.1.3-for-2.6.14-rc4.patch?download> > > > and a patch to upgrade the 6.1.2 version for 2.6.13 to 6.1.3 is > available at: > > <http://prdownloads.sourceforge.net/cpuse/plugsched-6.1.2-to-6.1.3-for-2.6.13.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
A patch for the 2.6.14-mm1 kernel is now available at:
<http://prdownloads.sourceforge.net/cpuse/plugsched-6.1.3-for-2.6.14-mm1.patch?download>
Peter -- Peter Williams pwil3058@bigpond.net.au
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