--- Mike Galbraith wrote: > On Fri, 2007-03-30 at 15:05 +0000, Xenofon Antidides > wrote: > > ----- Original Message ---- > > From: Ingo Molnar > > To: Con Kolivas > > Cc: linux list ; > Andrew Morton ; Mike > Galbraith > > Sent: Thursday, March 29, 2007 9:22:49 PM > > Subject: [test] hackbench.c interactivity results: > vanilla versus SD/RSDL > > > > > > * Ingo Molnar wrote: > > > > > * Con Kolivas wrote: > > > > > > > I'm cautiously optimistic that we're at the > thin edge of the bugfix > > > > wedge now. > > [...] > > > > > and the numbers he posted: > > > > > > > http://marc.info/?l=linux-kernel&m=117448900626028&w=2 > > > > We been staring at these numbers for while now and > we come to the conclusion they wrong. > > > > The test is f is 3 tasks, two on different and one > on same cpu as sh here: > > virgin 2.6.21-rc3-rsdl-smp > > top - 13:52:50 up 7 min, 12 users, load average: > 3.45, 2.89, 1.51 > > > > PID USER PR NI VIRT RES SHR S %CPU %MEM > TIME+ P COMMAND > > 6560 root 31 0 2892 1236 1032 R 82 0.1 > 1:50.24 1 sh > > 6558 root 28 0 1428 276 228 S 42 0.0 > 1:00.09 1 f > > 6557 root 30 0 1424 280 228 R 35 0.0 > 1:00.25 0 f > > 6559 root 39 0 1424 276 228 R 33 0.0 > 0:58.36 0 f > > This is a 1 second sample, tasks migrate. > > -Mike Something different on many cpus? Sorry I was thinking something other. I try 50% run + 50% sleep on one cpu and mainline has big problem. Sorry for bad code I copy bits to make it work. Start program first then run bash 100% cpu (while : ; do : ; done). Try change program forks from 1 till 3 or more mainline kernel and bash gets 0%. Xant ____________________________________________________________________________________ Get your own web address. Have a HUGE year through Yahoo! Small Business. http://smallbusiness.yahoo.com/domains/?p=BESTDEAL