Re: [Vserver] vsched and multi-CPU
On Tue, May 30, 2006 at 04:12:55PM +0200, Mehdi Bennani wrote: > Hello, > > I've read the pages about vsched on > > http://linux-vserver.org/vsched+explained: > http://linux-vserver.org/Scheduler+Parameters > > I'm trying to figure out how vserver deals with multi-processor > systems and systems with hyperthreaded processors (detected as > bi-processor). > > and I would like an explanation about something that seems ambigous > to me: > > --Both pages seem to say that (fill-rate) / (interval) is the > proportion for ONE processor in the system. But a sentence in > http://linux-vserver.org/vsched+explained...: > > "So, if you have four CPUs and you want one context to get an average > of one whole CPU to itself, then you'd set fill-rate to 1 and interval > to 4." > > ... is not clear... does it mean that (fill-rate) / (interval) is the > proportion for the FOUR CPU's? > > Where is the truth? as usually the truth is somewhere inbetween ... actually we have to differentiate here between the stable and the devel releases, because: stable has a single token bucket for all cpus and the scheduler adds 'rate' tokens per cpu and 'interval' development has one token bucket per cpu and two rate/interval values for each of them, to control normal and idle time > --Is a processor with Hyperthreading counted as two processors > by vserver? yes, as SMT appears quite similar to SMP at least regarding the scheduler and runqueues HTH, Herbert > Thanks, > > Mehdi Bennani > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] vsched and multi-CPU
Hello, I've read the pages about vsched on http://linux-vserver.org/vsched+explained: http://linux-vserver.org/Scheduler+Parameters I'm trying to figure out how vserver deals with multi-processor systems and systems with hyperthreaded processors (detected as bi-processor). and I would like an explanation about something that seems ambigous to me: --Both pages seem to say that (fill-rate) / (interval) is the proportion for ONE processor in the system. But a sentence in http://linux-vserver.org/vsched+explained...: "So, if you have four CPUs and you want one context to get an average of one whole CPU to itself, then you'd set fill-rate to 1 and interval to 4." ... is not clear... does it mean that (fill-rate) / (interval) is the proportion for the FOUR CPU's? Where is the truth? --Is a processor with Hyperthreading counted as two processors by vserver? Thanks, Mehdi Bennani ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] vsched
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 hi, i wasn't really sure about vsched so i read through the archives adn various relevant pages that i could find and have copied stuff up onto a new page on the wiki: http://linux-vserver.org/vsched+explained please feel free to add/change/clarify whatever :) - -- love and solidarity, --gdm http://docs.indymedia.org/view/Main/GarconDuMonde i have a NEW key: gpg --keyserver pgp.mit.edu --recv-keys 594B97C2 Key fingerprint = 7B70 F22D F275 D111 3A04 F9EE 0E25 4944 594B 97C2 -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.1 (Darwin) iD8DBQFEPE4SDiVJRFlLl8IRAgIhAJ0bexwEM+qAuuR7PqV2ahc+RLzGMgCdHmib DuM3pA72bu/srI3ZlvXbpp0= =SPX8 -END PGP SIGNATURE- ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] vsched
On Fri, Apr 01, 2005 at 12:31:45AM +0400, Peter V. Saveliev wrote: > ... > > # vsched --help > Usage: > vsched > [--xid ] > 8<-- > > Can anybody tell me, what mean these options? > > [--fill-rate ] -- in which measure? percents? tokens > [--interval ] -- milliseconds? nanoseconds? crocodiles per > mile? ;) jiffies or ticks ... > > [--prio-bias ] -- what is "bias"? not used for now ... > 8<-- > [--] [ *] HTH, Herbert > -- > Peter V. Saveliev > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] vsched
see this thread (read the whole thread, my post has some inaccuracies corrected in follow-ups) http://www.mail-archive.com/vserver@list.linux-vserver.org/msg03324.html Grisha On Fri, 1 Apr 2005, Peter V. Saveliev wrote: ... # vsched --help Usage: vsched [--xid ] 8<-- Can anybody tell me, what mean these options? [--fill-rate ] -- in which measure? percents? [--interval ] -- milliseconds? nanoseconds? crocodiles per mile? ;) [--prio-bias ] -- what is "bias"? 8<-- [--] [ *] -- Peter V. Saveliev ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] vsched
... # vsched --help Usage: vsched [--xid ] 8<-- Can anybody tell me, what mean these options? [--fill-rate ] -- in which measure? percents? [--interval ] -- milliseconds? nanoseconds? crocodiles per mile? ;) [--prio-bias ] -- what is "bias"? 8<-- [--] [ *] -- Peter V. Saveliev ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] vsched segfault (and workaround ;)
Hi there, as pointed out by Hollow, confirmed by me and workarounded by Bertl, vsched with hard limits segfaults after setting the values. by ading '-- true' to the command line, it stops segfaulting while continue working correctly. Regards, Adrian -- LiHAS - LinuxHaus Stuttgart Fon: +49 (7 11) 2 85 19 05 Inh.: Adrian Reyer Fax: +49 (7 11) 5 78 06 92 Mail: [EMAIL PROTECTED] Linux, Netzwerke, Consulting & Support http://lihas.de/ ___ Vserver mailing list [EMAIL PROTECTED] http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] vsched bug?
[EMAIL PROTECTED] ("Gregory (Grisha) Trubetskoy") writes:
> And it looks like utils pass v3 while the kernel treats it as v2 and
> so my fill_rate becomes set_mask,
Thanks for the report and the analysis; should be fixed in 0.30.196
Enrico
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Re: [Vserver] vsched
On Thu, Oct 07, 2004 at 11:52:45AM -0400, Gregory (Grisha) Trubetskoy wrote: > > Is there any documentation/examples of how to use vsched and the sched_* > flags? I couldn't find anything other than a few mentions in the IRC > logs... the linux-vserver paper should explain the token bucket and how it is supposed to work when I get around, I'll do an additional scheduler howto, until then the available info should be sufficient, if not, please let me know ... best, Herbert > Thanks! > > Grisha > > ___ > Vserver mailing list > [EMAIL PROTECTED] > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list [EMAIL PROTECTED] http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] vsched
Is there any documentation/examples of how to use vsched and the sched_* flags? I couldn't find anything other than a few mentions in the IRC logs... Thanks! Grisha ___ Vserver mailing list [EMAIL PROTECTED] http://list.linux-vserver.org/mailman/listinfo/vserver
