I was running SCHED_ULE on an 8.0 and everything works fine. On my 2 core head of yesterday I tried both SCHED_ULE AND 4BSD.. and got the same results ;-0 I will try my 4 core when I get home ;-) R On Jan 28, 2010, at 11:15 AM, Gary Jennejohn wrote: > On Thu, 28 Jan 2010 10:30:37 -0800 > Randall Stewart <rrs_at_lakerest.net> wrote: > >> All: >> >> I just found a very strange thing with yesterdays head. >> >> The program >> >> http://www.freebsd.org/~rrs/my_thr.c >> >> I compile it: >> >> cc -g -o my_thr my_thr.c /usr/lib/libthr.a -lpthread >> >> Now when you run this on a 2 core 64 bit machine running X11 with >> yesterday >> AM's current. The machine appears to lock completely. It really has >> not give >> it time and it will chug along.. but the mouse disappears etc... as >> if >> its locked. >> >> It takes quite some time to complete .. and every now and then a >> hickup will occur >> and you get a slight response.. >> >> Now I took this code home and ran it on my 4core AMD (2.8Gig with >> real >> AMD cores). And >> it did NOT do the same.. but ran like you would expect it to. >> >> I then took the same code running on an identical 8.0 release machine >> and ran it >> and it worked like you would expect.. >> >> >> It looks like some change in the scheduler in head is not doing good >> things. >> >> Note my 4 core is behind the 2 core.. so it may not be core count >> related.. when >> I get off work today and get home I will do a update and see if the 4 >> core starts >> behaving badly too... >> > > Are you using SCHED_4BSD? Seems to me some changes were made to it > very recently. > > I tried this on my AMD64 X2 using SCHED_ULE and it worked OK. But I'm > not running HEAD, because I'm using the svn tree with soft-updates > journaling from a few days ago. > > --- > Gary Jennejohn > ------------------------------ Randall Stewart 803-317-4952 (cell) 803-345-0391(direct)Received on Thu Jan 28 2010 - 20:55:44 UTC
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