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On Wednesday 25 December 2002 01:29 am, Con Kolivas wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Wed, 25 Dec 2002 09:26 am, scott thomason wrote: > > My experiences to add to the pot...I started by booting > > 2.5.52-mm2 and launching KDE3. I have a dual AMD MP2000+, 1GB > > RAM, with most of the data used below on striped/RAID0 ATA/133 > > drives. Taking Andrew's advice, I created a continuous load with: > > > > while [ 1 ]; do ( make -j4 clean; make -j4 bzImage ); done > > > > ...in a kernel tree, then sat down for a leisurely email and web > > cruising session. After about fifteen minutes, it became apparent > > I wasn't suffering any interactive slowdown. So I increased the > > load: > > > > while [ 1 ]; do ( make -j8 clean; make -j8 bzImage ); done > > while [ 1 ]; do ( cp dump1 dump2; rm dump2; sync ); done > > > > ...where file "dump1" is 100MB. Now we're seeing some impact :) > > > > To combat this I tried: > > > > echo 3000 > starvation_limit > > echo 4 > interactive_delta > > echo 200 max_timeslice > > echo 20 min_timeslice > > > > This works pretty well. The "spinning envelope" on the email > > monitor of gkrellm actually corresponds quite nicely with the > > actual feel of my system, so after awhile, I just sat back and > > observed it. Both the tactile response and the gkrellm > > obervations show this: it's common to experience maybe a .1--.3 > > second lag every 2 or 3 seconds with this load, with maybe the > > odd .5 second lag occurring once or twice a minute. Watching the > > compile job in the background scroll by, I noticed that there are > > times when it comes to a dead stop. The next step, I guess, needs > > to be a ConTest with the final settings... > > > > child_penalty: 95 > > > > exit_weight: 3 > > > > interactive_delta: 4 > > > > max_sleep_avg: 2000 > > > > max_timeslice: 300 > > > > min_timeslice: 10 > > > > parent_penalty: 100 > > > > prio_bonus_ratio: 25 > > > > starvation_limit: 3000 > > Scott > > These don't correspond to your values listed above. Typo? > > Con Yes, sorry. The values listed concisely are correct, IOW: child_penalty: 95 exit_weight: 3 interactive_delta: 4 max_sleep_avg: 2000 max_timeslice: 200 min_timeslice: 20 parent_penalty: 100 prio_bonus_ratio: 25 starvation_limit: 3000 Now I need to fire up a ConTest, then off to Christmas with Grandma and the kids! Merry Christmas to all! ---scott - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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