Re: Help required : JIT dump processing exited abnormally

[Maynard J. <may...@us...>]

Saraswati, Sujoy (STSD) wrote:
> Hi,
>  I am new to Oprofile and I am facing a problem trying to use it. I downloaded the oprofile-0.9.4.tar.gz from http://oprofile.sourceforge.net/download/ and built it on a Suse box. I used the following option while configuring and installing oprofile - 
> 
> # ./configure --with-kernel-support
> # make install
> 
> After this, I tried to run oprofile and collect samples on a test application. At the end of the application run, opreport complained of no samples. The log file of oprofile says " JIT dump processing exited abnormally: 1". Is this the reason samples were not dumped properly ? I don't need to sample java applications, can I disable the JIT dump processing ? Otherwise, what needs to be done for this to work ? Below are the detailed steps from my experiment.
> 
> susehou01:/tmp/samples # which opcontrol
> /usr/local/bin/opcontrol
> 
> susehou01:/tmp/samples # opcontrol -v
> opcontrol: oprofile 0.9.4 compiled on Apr  3 2009 00:33:51
> 
> opcontrol --no-vmlinux --start  --image=/tmp/matmul
> Using default event: CPU_CLK_UNHALTED:100000:0:1:1
> Using 2.6+ OProfile kernel interface.
> Using log file /tmp/samples/oprofiled.log
> Daemon started.
> Profiler running.
> 
> susehou01:/tmp # ps -aef | grep oprofile
> root     26313     1  0 02:54 ?        00:00:00 /usr/local/bin/oprofiled --session-dir=/tmp --separate-lib=0 --separate-kernel=0 --separate-thread=0 --separate-cpu=0 --events=CPU_CLK_UNHALTED:118:0:100000:0:1:1, --no-vmlinux --image=/tmp/matmul
> root     26318 26154  0 02:54 pts/0    00:00:00 grep oprofile
> 
> susehou01:/tmp # opcontrol --status
> Daemon running: pid 26313
> Separate options: none
> vmlinux file: none
> Image filter: /tmp/matmul
> Call-graph depth: 0
> 
> susehou01:/tmp # /tmp/matmul
> Matrix multiply
> Page size: 4096
> ...
> 
> susehou01:/tmp # opcontrol --savesusehou01:/tmp # opcontrol --save=mysession
First, you should stop oprofile before doing a --save. Use 'opcontrol --stop', which, by the way, will do an implicit --dump.  Also, what is "--savesusehou01:/tmp"?
> Signalling daemon... done
> 
> susehou01:/tmp # opcontrol --dump
> 
> susehou01:/tmp # opreport
Just doing 'opreport' will result in looking for samples in the default samples directory, /var/lib/oprofile/samples/current.  But you've already done a --save above, which moved the samples to /var/lib/oprofile/samples/mysession.  If you *really* want and need to save the session (i.e., move them from "current"), then you have to tell opreport where the samples are.  You do that with 'opreport session:mysession'.

> opreport error: No sample file found: try running opcontrol --dump
> or specify a session containing sample files
> 
> 
> susehou01:/tmp # tail /tmp/samples/oprofiled.log
> 
> oprofiled started Fri Apr  3 02:54:00 2009
> kernel pointer size: 8
> JIT dump processing exited abnormally: 1
> Received SIGHUP.
> JIT dump processing exited abnormally: 1
> JIT dump processing exited abnormally: 1
> JIT dump processing exited abnormally: 1
I'm not exactly sure why you're seeing these messages, but the "1" means "OP_JIT_CONV_NO_DUMPFILE", which implies we got quite a ways into processing a JIT dump file and ran into a problem when trying to process the temporary copy of same.  I suspect you have residual dump files in /var/lib/oprofile/jitdump.  You need to be sure to do the following BEFORE EACH OPROFILE RUN:
	'opcontrol --reset'
otherwise, your sample directory will contain old sample data plus new sample data.

You need to get a little bit more familiar with how to use oprofile.  Please see http://oprofile.sourceforge.net/doc/index.html.

-Maynard
> 
> Here is the output from the system -
> 
> # uname -a
> Linux susehou01 2.6.16.60-0.21-smp #1 SMP Tue May 6 12:41:02 UTC 2008 x86_64 x86_64 x86_64 GNU/Linux
> 
> # ophelp -r
> AMD64 family10
> 
> Any help would be very useful.
> 
> Regards,
> Sujoy
> 
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