Messages in this thread | | | Subject | 2.6.14-rt1: oprofile doesn't work anymore | From | Lee Revell <> | Date | Thu, 03 Nov 2005 16:39:33 -0500 |
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Several months ago oprofile just stopped working on my system. All I have changed on the system was updating the kernel. This used to work perfectly. I figured it was something I overlooked but recently I double checked everything and I can't for the life of me figure out what's wrong.
I am using the simple "profile" script that Andrew Morton posted several months ago. But no matter what I do, all I get is:
opreport error: No sample file found: try running opcontrol --dump or specify a session containing sample files
(Of course I have tried running opcontrol --dump, it has absolutely no effect)
Examining the log files I see that it does not collect any samples.
root@mindpipe:~# cat /var/lib/oprofile/oprofiled.log oprofiled started Thu Nov 3 16:32:05 2005 kernel pointer size: 4
Thu Nov 3 16:32:31 2005
Nr. sample dumps: 4 Nr. non-backtrace samples: 0 Nr. kernel samples: 0 Nr. lost samples (no kernel/user): 0 Nr. lost kernel samples: 0 Nr. incomplete code structs: 0 Nr. samples lost due to sample file open failure: 0 Nr. samples lost due to no permanent mapping: 0 Nr. event lost due to buffer overflow: 0 Nr. samples lost due to no mapping: 0 Nr. backtraces skipped due to no file mapping: 0 Nr. samples lost due to no mm: 0 Nr. samples lost cpu buffer overflow: 0 Nr. samples received: 0 Nr. backtrace aborted: 0 oprofiled stopped Thu Nov 3 16:32:31 2005
Is there something in the -rt tree that's known to break oprofile? Or did the userspace interface change in an incompatible way?
Lee
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