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gprof

Posted on 2007-10-06
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Hi,

I am running gprof for c program 10 times, is it any option to get average of output rather than couting one by one.thanks
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Question by:zizi21
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by:zizi21
ID: 20029879
Hi,

It says :

ay is to combine the data from several runs, using the `-s' option of gprof. Here is how:


Run your program once.

Issue the command `mv gmon.out gmon.sum'.

Run your program again, the same as before.

Merge the new data in `gmon.out' into `gmon.sum' with this command:

gprof -s executable-file gmon.out gmon.sum

Repeat the last two steps as often as you wish.

Analyze the cumulative data using this command:

gprof executable-file gmon.sum > output-file


I a bit confuseing..

Is it like this?


>>>

Is it  gcc - ansi ..-pg file.c file.h
./a.out
gprof a.out

i get a gmon.out file..
i rename the file to gmon.sum

then, i rerun the program again
gcc -ansi..-pg file.c file.h
./a.out
gprof -s a.out gmon.out gmon.sum


each time i do gprof -s a.out gmon.out gmon.sum , i am actually appending data to gmon.sum...


then at the end , when i do like this : gprof a.out gmon.sum > output-file, i get average.

It is just that , when i open the file, i notice, i did not get average, it is adding the values...?pls help..
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