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Old 11-03-2004, 08:08 AM   #1
JAllegraud
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Registered: Nov 2004
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Benchmarking an application


Hello,

I want to benchmark a custom application developped in C++. The code compiles under Windows and Linux but I d rather benchmark my application under Linux. The information I want are:
- Time-related: how long it take to process a function or an executable. Real time and CPU time
- Memory related: how much memory is used by my function or my executable. The whole memory-use profile would be ideal but the maximum memory used should be the more relevant information needed.
- System-related information such as number of calls to the system

As for time, gettimeofday function seems to be the right function (I need to have a millisecond accuracy). As for the other information, I dont know which functions (or libraries) I should use.


Can anyone help me, please

Thanks

Jong
 
Old 11-03-2004, 09:00 AM   #2
jim mcnamara
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Registered: May 2002
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Try using gprof - the profiler. You do not have to instrument your code to get results.
The compiler does it for you

Compile with -g and -p, run your code, then gprof <programname>


If you only need time spent:
Code:
time myprgram
 
Old 11-04-2004, 09:24 AM   #3
shy
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Registered: Dec 2002
Location: Russia
Distribution: ASP linux
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Re: Benchmarking an application

Quote:
Originally posted by JAllegraud
System-related information such as number of calls to the system
strace can be used to do this. For example, strace -c can be used to "Count time, calls, and errors for each system call and report a summary on program exit". If you are developing a multi thread/process application, you may need "-f -F" keys.
 
  


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