[prev in list] [next in list] [prev in thread] [next in thread] 

List:       oprofile-list
Subject:    Re: callgraph on x86_64
From:       Jerome White <white_jerome () emc ! com>
Date:       2008-02-06 17:12:46
Message-ID: 47A9EA8E.5070509 () emc ! com
[Download RAW message or body]

Christopher Layne wrote:
> On Tue, Jan 29, 2008 at 05:53:03PM -0800, Konstantin Serebryany wrote:
> > Hmm.
> > I have a machine which works in mixed mode (2.6.18.5 mixed64-32).
> > oprofile's flat profile works fine on it, but the callgraph does not.
> > It shows me something like this:
> > 
> > $ opreport -l -c  ./bzip2
> > ...-------------------------------------------------
> > 98372    51.8719  BZ2_blockSort
> > 98372    100.000  BZ2_blockSort [self]
> > -------------------------------------------------------------------------------
> > 71317    37.6057  fallbackSort
> > 71317    100.000  fallbackSort [self]
> 
> For the record, I also see this behaviour. I can also remember seeing it atleast as \
> far back as 4 months ago (from when I lasted tried using callgraph support). \
> Unfortunately this isn't a multilib system so I can't try it under 32.
> 
> # opreport -gl -c '*bz2*'
> CPU: AMD64 processors, speed 2400 MHz (estimated)
> Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of \
>                 0x00 (No unit mask) count 100000
> warning: /var/lib/oprofile/samples/current/{root}/bin/bzip2/{dep}/{root}/lib64/libbz2.so.1.0.4/CPU_CLK_UNHALTED.100000.0.all.all.all \
> is not in a usable binary format. samples  %        linenr info                 \
>                 image name               app name                 symbol name
> -------------------------------------------------------------------------------
> 174693   54.0678  bzlib.c:808                 libbz2.so.1.0.4          bzip2        \
> BZ2_bzDecompress 174693   100.000  bzlib.c:808                 libbz2.so.1.0.4      \
>                 bzip2                    BZ2_bzDecompress [self]
> -------------------------------------------------------------------------------
> 148156   45.8545  decompress.c:107            libbz2.so.1.0.4          bzip2        \
> BZ2_decompress 148156   100.000  decompress.c:107            libbz2.so.1.0.4        \
>                 bzip2                    BZ2_decompress [self]
> -------------------------------------------------------------------------------
> 154       0.0477  bzlib.c:1165                libbz2.so.1.0.4          bzip2        \
> BZ2_bzRead 154      100.000  bzlib.c:1165                libbz2.so.1.0.4          \
>                 bzip2                    BZ2_bzRead [self]
> -------------------------------------------------------------------------------
> 95        0.0294  huffman.c:177               libbz2.so.1.0.4          bzip2        \
> BZ2_hbCreateDecodeTables 95       100.000  huffman.c:177               \
>                 libbz2.so.1.0.4          bzip2                    \
>                 BZ2_hbCreateDecodeTables [self]
> -------------------------------------------------------------------------------
> 2        6.2e-04  (no location information)   libbz2.so.1.0.4          bzip2        \
> .plt 2        100.000  (no location information)   libbz2.so.1.0.4          bzip2   \
>                 .plt [self]
> -------------------------------------------------------------------------------
> # uname -a
> Linux ns1 2.6.24 #1 SMP Sat Jan 26 09:32:00 GMT 2008 x86_64 Dual-Core AMD \
> Opteron(tm) Processor 1216 AuthenticAMD GNU/Linux # opcontrol --version
> opcontrol: oprofile 0.9.3 compiled on Jan 27 2008 21:21:22
> 
> Oprofile is also compiled into the kernel (not a module).
> 
> -cl
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> oprofile-list mailing list
> oprofile-list@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/oprofile-list
> 

I was also having callgraph trouble on my x86_64 machine. I was able to 
get it work, however, by removing gcc optimization's from the 'libop' 
and 'libdb' Makefiles. More specifically:

/tmp/oprofile-0.9.3 $> diff ./libop/Makefile{~,}
101c101,102
< CFLAGS = -g -O2
---
 > # CFLAGS = -g -O2
 > CFLAGS = -g
107c108,109
< CXXFLAGS = -g -O2
---
 > # CXXFLAGS = -g -O2
 > CXXFLAGS = -g
/tmp/oprofile-0.9.3 $> diff ./libdb/Makefile{~,}
99c99,100
< CFLAGS = -g -O2
---
 > # CFLAGS = -g -O2
 > CFLAGS = -g
105c106,107
< CXXFLAGS = -g -O2
---
 > # CXXFLAGS = -g -O2
 > CXXFLAGS = -g

jerome




-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
oprofile-list mailing list
oprofile-list@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/oprofile-list


[prev in list] [next in list] [prev in thread] [next in thread]