RE: some libraries do not oprofile

[Colon C. <Car...@co...>]

See below... 

-----Original Message-----
From: John Levon [mailto:le...@mo...] 
Sent: Wednesday, September 15, 2004 2:14 PM
To: Colon Carlos
Cc: opr...@li...
Subject: Re: some libraries do not oprofile

On Wed, Sep 15, 2004 at 01:50:33PM -0400, Colon Carlos wrote:

> Process P loads a bunch of libraries dynamically up need, one of which 
> L.  L in turn has static resolution to other share libraries, so these 
> are loaded automatically when L loads.  I see profiling information 
> for all libraries P loads.  I don't see profiling information for all 
> libraries L loads.  I do see profiling information for L itself.  Any 
> ideas what I may be doing wrong?  I started Oprofile with the following
options:
> 
> opcontrol --no-vmlinux
> opcontrol --separate=library
> 
> This happens on both the 0.7 and 0.8 versions.

What does /proc/<pid>/maps say?
[carlos] It's got things like these (I've only listed some of the ones I
care that I don't see being profiled):
402f6000-40441000 r-xp 00000000 08:07 546749
/cti/vap/common/lib/libACE.so
40441000-40478000 rw-p 0014a000 08:07 546749
/cti/vap/common/lib/libACE.so
409c5000-409d6000 r-xp 00000000 08:07 546751
/cti/vap/common/lib/libdebuglog.so
409d6000-409d8000 rw-p 00010000 08:07 546751
/cti/vap/common/lib/libdebuglog.so
409d8000-40a05000 r-xp 00000000 08:07 546760
/cti/vap/common/lib/libSystemParametersSpi.so
40a05000-40a13000 rw-p 0002c000 08:07 546760
/cti/vap/common/lib/libSystemParametersSpi.so
40a13000-40a26000 r-xp 00000000 08:07 546750
/cti/vap/common/lib/libcw.so
40a26000-40a2b000 rw-p 00012000 08:07 546750
/cti/vap/common/lib/libcw.so
40a2b000-40ca3000 r-xp 00000000 08:07 546753
/cti/vap/common/lib/libxerces-c.so.21
40ca3000-40d1e000 rw-p 00277000 08:07 546753
/cti/vap/common/lib/libxerces-c.so.21
4525c000-452cf000 r-xp 00000000 08:07 546755
/cti/vap/common/lib/libjs.so
452cf000-452d3000 rw-p 00072000 08:07 546755
/cti/vap/common/lib/libjs.so
452d3000-45337000 r-xp 00000000 08:07 546742
/cti/vap/common/lib/libAceWebLib.so
45337000-45341000 rw-p 00063000 08:07 546742
/cti/vap/common/lib/libAceWebLib.so
45342000-45369000 r-xp 00000000 08:07 24819      /usr/lib/libnspr4.so
45369000-4536b000 rw-p 00026000 08:07 24819      /usr/lib/libnspr4.so
41ddb000-41df1000 r-xp 00000000 08:07 546743
/cti/vap/common/lib/libThreadPoolLib.so
41df1000-41df5000 rw-p 00015000 08:07 546743
/cti/vap/common/lib/libThreadPoolLib.so

What kernel version are you using?
[carlos] 2.4.7-10-smp-oprof #2 SMP Wed May 5 12:16:40 EDT 2004 i686 unknown

Make sure that you're actually calling, and spending a lot of time in, these
libs you don't see. 
[carlos] Am sure some of these are heavy doers as, e.g., we do a lot of
scripting (so I should expect to see libjs.so).
NOTE:  If I instead have a different process P1 that built with L in the
link line (the original process P didn't) then these libraries show up no
problem.

Check /var/lib/oprofile/oprofiled.log and /dev/oprofile/stats
[carlos] Don't see anything of interest there.  The former has only:
oprofiled started Wed Sep 15 11:35:47 2004
swap map for image /usr/X11R6/bin/XFree86 from /dev/mem to
/usr/X11R6/bin/XFree86
Received SIGHUP.
Received SIGHUP.
Received SIGHUP.
Received SIGHUP.

And the latter is empty.


john
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