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The Rotating Staircase Deadline SchedulerThe Rotating Staircase Deadline SchedulerPosted Mar 8, 2007 10:47 UTC (Thu) by superstoned (subscriber, #33164)Parent article: The Rotating Staircase Deadline Scheduler
Lovely article ;-)
It's good to see this getting some attention, as RSDL seems to be a good piece of work. Starvation has been a problem in the kernel, giving short stalls now and then. A completely fair yet interactive scheduler like this one would do away with that, at the expense of ppl having to use nice probably a bit more on heavy processes like compiling.
Maybe apps like dpkg or emerge should start nicing themselves by default...
Still, RSDL gives a perfectly responsive desktop even when a make -j4 is running aside with aMule, mail etcetera, so its doing better than mainline on my system already.
And a better throughput is really an unexpected but nice benefit. Maybe worth mentioning RSDL does a bit better than mainline on the MySQL scaling issue:
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The Rotating Staircase Deadline Scheduler Posted Mar 8, 2007 12:54 UTC (Thu) by dion (subscriber, #2764) [Link] I'd like to second that idea about selfnicing, but perhaps it would be better to simply let crond do that?
Self-renicing emerge Posted Mar 8, 2007 14:35 UTC (Thu) by farnz (subscriber, #17727) [Link] Although it's not currently on by default, emerge will already renice itself if you set the PORTAGE_NICENESS variable in /etc/make.conf. I do this so that an emerge doesn't kill system performance.I've not prodded Debian for a while, but I'd be surprised if there wasn't a similar setting for apt/dpkg.
Self-renicing emerge Posted Mar 8, 2007 19:46 UTC (Thu) by vmole (subscriber, #111) [Link] Apt and dpkg are not, in general, CPU bound, but I/O bound. Nicing I/O bound processes generally causes more problems than it solves, because you end up blowing the file cache.
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