I did a opcontrol --deinit and echo 0 > /proc/sys/kernel/nmi_watchdog and then ran the script and everything seems to work now. wr From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf Of William Reich Sent: Tuesday, September 20, 2011 1:23 PM To: centos at centos.org Subject: [CentOS] is oprofile working on CENTOS 6.0 ? Hi I am trying to use oprofile with centos 6.0. I know that the debug-info for the kernel is not available, so I believe I used the correct switches to account for this. here is my script... # reset everything opcontrol --shutdown rm /root/.oprofile/da* opcontrol --separate=kernel --no-vmlinux opcontrol --event=CPU_CLK_UNHALTED:100000 opcontrol --start sleep 5 opcontrol --reset echo "sleeping now" sleep 20 opcontrol -stop # all done - use the data with opreport... echo " " echo " " When I run this on a CENTOS 6 machine, the machine hangs. There is no visible panic on the console nor the serial port. This is 100% repeatable. I tried multiple machines. I am using a DELL 2850. Any help would be appreciated. wr -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110920/f3659115/attachment-0005.html>