On Thu, Apr 01, 2004 at 04:31:57PM -0500, Chris Miller wrote: > On Thu, 2004-04-01 at 09:48, Mitch Wiedemann wrote: > > Is the FC1 2.4.22-1.2174.nptl kernel still having problems with SMP and > > hanging? > > I run around 100 SMP servers with no problem. > > Hardware. > Dual Xeon servers with HT on supermicro server boards. > Dual AMD on Tyan 2469,2468,2462 > Dual Opteron on Tyan 2880 > > And I do run the fedora kernel. Anything I can do to help let me know. > But I have never seen any of the problems anyone is talking about. I'd be interested if you could run the script from: http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=109962#c40 and see how you go. The script creates a small file in /tmp, makes a filesystem image out of that file, and then continuously does a loop-back mount/umount until you get sick of it and ^C out. Any FC1 SMP kernel I have used on several types of systems, including AMD single processor systems running the athlon SMP kernel, will lockup in less than 500 mount/umounts. Usually much faster. Other kernels can do mount/umounts for as long as you want. I've gone upto 20,000 before I ^C out. This is the script: #!/bin/sh NAME="hangemhi" SIZE=6000 MNTPOINT=/tmp/${NAME} IMAGE=/tmp/${NAME}.img echo Creating something to mount dd if=/dev/zero of=${IMAGE} bs=1k count=${SIZE} mke2fs -F -q ${IMAGE} ${SIZE} echo Creating the mount point mkdir -p ${MNTPOINT} echo Now doing mount/umount until the system hangs COUNT=1 while true do echo -en ${COUNT} "\r" mount -r -o loop -t ext2 ${IMAGE} ${MNTPOINT} umount ${MNTPOINT} COUNT=`expr ${COUNT} + 1` done -- Norman Gaywood, Systems Administrator School of Mathematics, Statistics and Computer Science University of New England, Armidale, NSW 2351, Australia norm@xxxxxxxxxxxxxxxxx Phone: +61 (0)2 6773 2412 http://turing.une.edu.au/~norm Fax: +61 (0)2 6773 3312 Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html
