How To Do Profiling

Profiling is useful tool that gives you the CPU analysis results in your C++ program.

There is a new product "SpeedShop" works under IRIX 6.2. It is an integrated package of performance tools. It is a powerful tool set. It can attach to debugger and supports running Purify. We can use it to get profiling information. There is a man page on SpeedShop.

> man SpeedShop

For Profiling, you can try the following:

on d0chb (under IRIX 6.x):

> ssrun -v -fpcsampx myexe
# myexe is the program to be purified; if your program needs arguments, you can put arguments after myexe.

> prof myexe.fpcsampx.NNNNN | edg_decode
# myexe.fpcsampx.NNNNN is the file created by the previous commend ssrun. Where NNNNN is the process ID of the executed process. Each time ssrun is used, a new file with a different NNNNN is generated. Now you get the CPU information for your program.

If you only have IRIX 5.3, you can do profiling with KAI compiler for a C++ program. But this only works with IRIX 5.3.
If your machine has IRIX 5.3:

> setup kai # setup KAI compiler

> KCC -p --strict -D__KAI_STRICT -o mytest mytest.cpp # compile it with -p

> mytest # run your program to produce mon.out

> prof mytest mon.out > mytest.tmp # analyse mon.out

> $KAI_DIR/KCC_BASE/bin/edg_decode < mytest.tmp > mytest.prof
# give you a output file: mytest.prof
The profiling results are listed in your mytest.prof file. <\ul>

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Last modified: Thu Apr 9 18:37:30 CDT 1998