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Instrumentation Profiling on 32 bit

 
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THX 1138



Joined: 30 Jun 2011
Posts: 103

PostPosted: Thu Sep 15, 2011 1:17 pm    Post subject: Instrumentation Profiling on 32 bit Reply with quote

Can one do event or instrument profiling using the 32-bit based PGroup System? It said in some of the earlier documents that it was only available on the 64-bit system Then the more recent documents stopped saying that. I want to use Oprofile with it, of course.

Can this be done on 32-bit systems? Is it restricted to 64-bit systems?

THX 1138
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mkcolg



Joined: 30 Jun 2004
Posts: 6120
Location: The Portland Group Inc.

PostPosted: Thu Sep 15, 2011 2:58 pm    Post subject: Reply with quote

Hi THX 1138,

OProfile-based sampling support is only available on 64-bit Linux. The simple interface to this is
- pgcollect -hwtime
- pgcollect -dcache
- pgcollect -icache
- pgcollect -allcache

There is a simple time-based sampling facility available via pgcollect that is support on all platforms, 32-bit and 64-bit. The interface to this is:
- pgcollect -time

Also available on 32-bit is instrumented profile using the "-Mprof" flag.

After any of these, run pgprof in the same directory to view the results:
- pgprof -exe myprog


- Mat
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