Is there any command like
time, but that reports more statistics? It would be great if I could do something like:
$ statistics some_command time: real 0m3.002s user 0m0.000s sys 0m0.000s memory: min 41K peak 2.5M mean 1.1M . . .
If it could go even further, that would be great. Right now, for debugging, I either end up staring intently at
glances), or sprinkling statements all through my code.
If there was something that I could pass a command to, that would be fantastic.
I might have found a solution:
perf in the package
linux-tools-common on Ubuntu 12.04.
$ perf stat ./someprocess Performance counter stats for './someprocess': 12007.384578 task-clock # 0.996 CPUs utilized 1,092 context-switches # 0.000 M/sec 16 CPU-migrations # 0.000 M/sec 295,102 page-faults # 0.025 M/sec 40,553,682,299 cycles # 3.377 GHz [83.33%] 18,400,458,723 stalled-cycles-frontend # 45.37% frontend cycles idle [83.35%] 8,356,832,355 stalled-cycles-backend # 20.61% backend cycles idle [66.64%] 56,930,684,595 instructions # 1.40 insns per cycle # 0.32 stalled cycles per insn [83.34%] 9,083,443,825 branches # 756.488 M/sec [83.35%] 3,431,737 branch-misses # 0.04% of all branches [83.33%] 12.051963969 seconds time elapsed