On Wed, 2007-10-10 at 12:14 +0200, Ingo Molnar wrote: > * Nicholas Miell <[EMAIL PROTECTED]> wrote: > > > Does CFS still generate the following sysbench graphs with 2.6.23, or > > did that get fixed? > > > > http://people.freebsd.org/~kris/scaling/linux-pgsql.png > > http://people.freebsd.org/~kris/scaling/linux-mysql.png > > as far as my testsystem goes, v2.6.23 beats v2.6.22.9 in sysbench: > > http://redhat.com/~mingo/misc/sysbench.jpg
That's nice to know. Note that I'm not actually involved in any of these tests, just a somewhat interested bystander. > > As you can see it in the graph, v2.6.23 schedules much more consistently > too. [ v2.6.22 has a small (but potentially statistically insignificant) > edge at 4-6 clients, and CFS has a slightly better peak (which is > statistically insignificant). ] > > ( Config is at http://redhat.com/~mingo/misc/config, system is Core2Duo > 1.83 GHz, mysql-5.0.45, glibc-2.6. Nothing fancy either in the config > nor in the setup - everything is pretty close to the defaults. ) > > i'm aware of a 2.6.21 vs. 2.6.23 sysbench regression report, and it > apparently got resolved after various changes to the test environment: > > http://jeffr-tech.livejournal.com/10103.html > > " [<CFS>] has virtually no dropoff and performs better under load than > the default 2.6.21 scheduler. " (paraphrased) > > (The new link you posted, just a few hours after the release of v2.6.23, > has not been reported to lkml before AFAICS - when did you become aware > of it? If you learned about it before v2.6.23 it might have been useful > to report it to the v2.6.23 regression list.) According to my IRC logs, Jeffr pasted the URL at Oct 09 22:53:56 PDT. He says he tried to contact you early in CFS's development, but got no reply. > At a quick glance there are no .configs or other testing details at or > around that URL that i could use to reproduce their result precisely, so > at least a minimal bugreport would be nice. > AFAICT, the configuration is described in http://people.freebsd.org/~kris/scaling/mysql.html -- Nicholas Miell <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
