lkml.org 
[lkml]   [2005]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Subject2.6.14-rt1: oprofile doesn't work anymore
From
Date
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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-11-03 22:49    [W:0.184 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site