On Monday 05 March 2007 10:13, Willy Tarreau wrote: > Con, > > I've now given it a try with HZ=250 on my dual-athlon. It works > beautifully. I also quickly checked that playing mp3 doesn't skip during > make -j4, and that gears runs fairly smoothly, since those are the > references people often use. > > But with real work, it's excellent too. When I saturate my CPUs by > injecting HTTP traffic on haproxy, the load is stable and the command line > perfectly responsive, while in the past the load would oscillate and the > command line sometimes stopped to respond for a few seconds. > > I've also launched my scheddos program (you may remember, the one we did a > few experiments with). I could not cause any freeze at all. Plain 2.6.20 > had already improved a lot in this area, but above 4 processes/CPU, > occasional short freezes did still occur. This time, even at 100 processes, > the system was rather slow (of course!) but just as expected, and nothing > more. > > I also tried the good old "dd if=/dev/zero bs=1|...|dd bs=1 of=/dev/null" > and it did not cause any trouble. > > I will boot 2.6 slightly more often to test the code under various > conditions, and I will recommend it to a few people I know who tend to > switch back to 2.4 after one day full of 2.6 jerkiness. > > Overall, you have done a great job ! > > I hope that more people will give it a try, first to help find possible > remaining bugs, and to pronounce in favour of its inclusion in mainline.
Hi Con/Willy, Just to chime on this thread, I've been testing Con's scheduler patches since he mentioned them to me. I have to say for desktop performance all processes running remain responsive (although with more resource hungry processes things get slower but remain responsive, but expected). I have also been testing his scheduler on my work power workstation running 4 VMs with 4GB of ram on a dual-core EM64T box, again RSDL performs rather well balancing VM resources even while I have xmms running, xchat, beryl and a bunch of other stuff. There is total response to each process. Thanks, Shawn. - 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/