simplest tool to measure C program cache hit/miss and cpu time in linux?

Question

I\'m writing a small program in C, and I want to measure it\'s performance.

I want to see how much time do it run in the processor and how many cache hit+misses has

Answer 1

The best tool for you is called valgrind. It is capable of memory profiling, call-graph building and much more.

sudo apt get install valgrind
valgrind ./yourapp

However, to obtain the time your program executed, you can use time(8) linux utility.

time ./yourapp