How do you benchmark/profile code?

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vivik

Joined: 29 Oct 2016
Posts: 671

vivik 09 Feb 2018, 18:35

Do you use some tools for that or something?

09 Feb 2018, 18:35

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 19264
Location: In your JS exploiting you and your system

revolution 09 Feb 2018, 18:39

RDTSC is useful for short times.

The QPC API can also be useful for longer times.

Or the "wall clock" for even longer times.

I've never felt the need for more than that.

09 Feb 2018, 18:39

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 09 Feb 2018, 21:25

RDTSCP (since 2010) is preferred under SMP, Naive measurements can be done with *nix sh "time". Others (e.g. DJGPP) have "redir -t". OpenWatcom has wprof. GCC has gprof. Linux has perf and valgrind. Or you may just count calling your heavy routines manually (via extra code).

https://en.wikipedia.org/wiki/List_of_performance_analysis_tools

Or did you really mean "Windows only" (since this is the Windows subforum)???

09 Feb 2018, 21:25

vivik

Joined: 29 Oct 2016
Posts: 671

vivik 10 Feb 2018, 07:31

Yep, windows tools. How visual studio users benchmark their code, maybe they have some good way of doing that.

10 Feb 2018, 07:31

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