How do you make GMON out?


How do you make GMON out?

It can be done by running the gprof command with the -c option on the call graph profile file (gmon. out by default) to generate a file (gprof. remote by default), which can then be processed on a remote machine.

What is a GMON out file?

The `gmon. out’ file is written in the program’s current working directory at the time it exits. This means that if your program calls chdir , the `gmon. out’ file will be left in the last directory your program chdir ‘d to.

What is no pie?

-no-pie. Don’t produce a dynamically linked position independent executable. -static-pie. Produce a static position independent executable on targets that support it. A static position independent executable is similar to a static executable, but can be loaded at any address without a dynamic linker.

How do I know if gprof is installed?

To check that gprof is installed properly, execute the gprof command and it should give some error like ‘a. out: No such file or directory’. Assuming that the compiler being used it gcc or cc, compile your code with the option ‘-pg’ so that the executable includes extra code for profiling purposes.

How do I profile with Valgrind?

To profile, you run your program under Valgrind and explicitly request the callgrind tool (if unspecified, the tool defaults to memcheck). Valgrind has written the information about the above 7 million collected events to an output file named callgrind.

What linker does g ++ use?

3 Answers. g++ and gcc are drivers. Usually, they run the preprocessor ( cpp ), compiler proper ( cc1plus for C++ and cc1 for C) and the linker (gold or GNU ld) and all other things necessary.

What does gmon.out mean in gprof?

If you don’t specify the name of a data file, gmon.out is assumed. Following the gprof command with ” > output-file ” causes the output of gprof to be saved to output-file so you can examine it later.

Where do I save the output of gprof?

Following the gprof command with ” > output-file ” causes the output of gprof to be saved to output-file so you can examine it later. For this example, the program name is kruse and we will save the output into a file called kruse.output : After completing the last step, the gprof’s analysis has been saved into the kruse.output file.

How is execution time sorted in gprof quick start?

The entries are sorted by time spent in the function and its subroutines. In this example, we see that the first entry is for Life::update, the second entry is for main, and so on. 42.5% of the program’s execution time is spent in Life::update and its children. Life::update only has one child, Life::neighbor_count .