Re: Latest FC kernel still have SMP bugs?

37700 mount/unmount and still going. I will let it run on my test box here at my office. And give a update to my findings. But let me ask you what file system do you use on your boxs? On Thu, 2004-04-01 at 19:21, Norman Gaywood wrote: > 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(a)turing.une.edu.au 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 >