IRC logs of #boinc for Thursday, 2011-11-24

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07:06 <micha--> hi, is there a way to tell boinc to pause when the system is waiting for i/o? On my linux box, each time the indexer runs, the i/o wait is like 20%. now if boinc is running at the same time, it goes up to 40%, and the system becomes hard to use. I think boinc would pause if the computing load was gigh enough, but the recoll load is mainly on the i/o side.

07:08 <micha--> in effect, i disable boinc when it's annoying, and i enable it the next time i think about it. it would be better for me & boinc if this was automatic -- me less annoyed, more compute time for boinc...

07:20 <trogdog> micha--, have you tried setting "While processor usage is less than x percent"?

07:21 <micha--> trogdog: yes

07:23 <micha--> as i understand there have been some changes in the linux kernel in that direction (differentiating between waiting for io and busy), i don't remember this being a problem in earlier kernel versions

07:25 <trogdog> now your getting too technical for me :)

07:25 <micha--> i have set the "While processor usage is less than" to 25%, and boinc stops if i am doing something compute intensive

07:25 <micha--> but it doesn't stop if i am doing something i/o intensive

07:26 <micha--> trogdog: don't understand that thing about changes in the kernel either, just read about it somewhere

07:27 <trogdog> do you compile your own kernels?

07:27 <micha--> no, but i follow the reports about Linus & Co. :)

07:28 <micha--> this is a regular Debian installation, "testing"

07:28 <micha--> kernel 3.1

07:29 <trogdog> there was a thread on gentoo forums about new scheduling option that made boxes "feel" snappier

07:31 <micha--> maybe that's the same i read about

07:34 <trogdog> http://forums.gentoo.org/viewtopic-t-902906.html not the one I was thinking of will keep looking

07:34 <Romulus> <http://tinyurl.com/7g3ghkh> (at forums.gentoo.org)

07:37 <micha--> found something related: http://stackoverflow.com/questions/1475683/linux-process-states

07:37 <Romulus> <http://tinyurl.com/6w5bwzo> (at stackoverflow.com)

07:37 <micha--> a process that is waiting for i/o is put to sleep so the cpu is free for other tasks

07:38 <micha--> this sounds like boinc could get a report "the cpu is free" and happily continue working

07:44 <trogdog> http://forums.gentoo.org/viewtopic-t-869309.html was the one I was thinking of

07:44 <Romulus> <http://tinyurl.com/7pb8e5q> (at forums.gentoo.org)

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07:49 <trogdog> if you want to try compiling your own kernel try these sites

07:50 <trogdog> http://kernel-seeds.org/

07:50 <Romulus> Title: www.kernel-seeds.org, the home of Linux Kernel Seeds (at kernel-seeds.org)

07:50 <trogdog> http://vimeo.com/user2670102

07:50 <Romulus> Title: cach0rr0 on Vimeo (at vimeo.com)

07:55 <micha--> trogdog: thanks :-) i did compile my own kernel some time ago, on my last box, but on this one i am generally happy with the Debian kernel

08:00 <trogdog> debian uses ionice - maybe need to have a play with that?

08:02 <micha--> good idea, will have a look... maybe i can start boinc using ionice, like "idle this if io load is too big"?

08:02 <micha--> gotta go...

08:02 <micha--> thx!

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10:11 <desti> http://www.teamliquid.net/forum/viewmessage.php?topic_id=288639

10:11 <Romulus> <http://tinyurl.com/c883kcy> (at www.teamliquid.net)

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18:14 <efc> Flea, weaklings!

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18:22 <CoderForLife> Happy Thanksgiving efc

18:22 <CoderForLife> u2 wdsmia

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18:24 <efc> Moogobble CFL

21:32 <CoderForLife> Moobble efc

21:35 <PovAddict> I have another math asskicking^Wexam in 9 hours

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