I'm using gprof to optimize some software I've written and I'm seeing
something strange happen. When I use time to measure the the running time
of the program, I get about 6.4 seconds, yet gprof claims the total is only
2.0 seconds. For comparison purposes, I compiled the same program without
the -pg flag, and the running time was about 5.7 seconds.
Am I misunderstanding what gprof is reporting? Shouldn't the total of the
times spent in each function be roughly the running time of the program?
Insight appreciated.
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