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Re: [Libunwind-devel] Urgent - Help - 64 bit google profiler crashes (li


From: Arun Sharma
Subject: Re: [Libunwind-devel] Urgent - Help - 64 bit google profiler crashes (libunwind)
Date: Mon, 26 Feb 2007 11:22:13 -0800

[ + google-perftools ]

On 2/26/07, Rajesh Balamohan <address@hidden> wrote:
export PROFILEFREQUENCY=1000
PROFILE: interrupts/evictions/bytes = 10307/4141/657160

The output of the profiler is saved as follows
==================================.
ls -lrt /tmp/mxed_profiler_3
 -rw-r--r--  1 admin root 666921 Feb 26 13:02 /tmp/mxed_profiler_3

When I run,

pprof --gv --lines --nodecount=200 --nodefraction=0.0005 /opt/tms/bin/mxed
/tmp/ mxed_profiler_3

I get only couple of nodes and the number of samples says "8". So it means,
may be only 8 samples were taken during the run of over 3 or 4 minutes?


[ From your posting to google-perftools ]

address@hidden google-perftools-0.8]# pprof --text /localdisk/google-
perftools-0.8/profiler1_unittest /tmp/test.3
WARNING: program /localdisk/google-perftools-0.8/profiler1_unittest is
apparently not an ELF file

I didn't see any indication that libunwind is at fault here. Probably
the issue is that pprof is not able to find the correct ELF binary to
map addresses to symbols.

Could you try:

/localdisk/google-perftools-0.8/.libs/profiler1_unittest

assuming that's where libtool put the actual ELF binary?

-Arun




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