using valgrind at specific point while running program

问题

I want to use valrgind at a specific time while my program is running. For example, when I use -O3 it will take 0.5 hours to reach the desired point. When I use -g -ggdb it will take nearly 2.5 hours to reach the desired point.

Now if I use valgrind with -g -ggdb, the program is extremely slow and I can not predict when it reach the desired point.

What should I do?

来源：https://stackoverflow.com/questions/18438963/using-valgrind-at-specific-point-while-running-program