On Wed, Oct 26, 2011 at 01:50:04PM +0800, lvroyce wrote:
I believe enable systemtap will be very helpful for debugging.But I encountered belowing error when enable systemtap support:
*emantic error: probe point mismatch at position 0 (alternatives: __nfs __scheduler __signal __tcpmib __vm _linuxmib _signal _sunrpc _syscall _vfs begin begin(number) end end(number) error error(number) generic ioblock ioblock_trace ioscheduler ioscheduler_trace ipmib irq_handler kernel kprobe kprocess linuxmib module(string) nd_syscall netdev never nfs nfsd perf process process(number) process(string) procfs procfs(string) scheduler scsi signal socket softirq stap staprun sunrpc syscall tcp tcpmib timer tty udp vfs vm workqueue): identifier 'libvirt' at :130:7 while resolving probe point libvirt.event_poll.run source: probe libvirt.event_poll.run { ^ Pass 2: analysis failed. Try again with another '--vp 01' option.
*Here's my environment: * Ubuntu 11.04 amd64 configured --with-dtrace --enable-shared=no --with-pic(fPIC flag also tried) dtrace installed and compile probe with dtrace -64*
Would somebody pls give me some advice with this systemtap issue?
This means the libvirt_probes.stp file was not found in /usr/share/systemtap/tapset. Presumably you didn't do a 'make install' step, or you didn't set --prefix=/usr when building. If you installed into a different directory, you can try doing 'stap -I/your/other/location/share/systemtap/tapset demo.stp' Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|