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Diffstat (limited to 'examples/small_demos/prof.stp')
| -rwxr-xr-x | examples/small_demos/prof.stp | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/examples/small_demos/prof.stp b/examples/small_demos/prof.stp deleted file mode 100755 index 389f743a..00000000 --- a/examples/small_demos/prof.stp +++ /dev/null @@ -1,35 +0,0 @@ -#!/usr/bin/env stap - -# This is an example of profiling a specific command or pid. -# It works by recording the time when a system call is entered -# exited. - -# Usage: prof.stp -c "top -n5" -# Will start up "top" and after 5 iterations, will exit. -# -# Usage: prof.stp -x 3323 -# Will profile pid 3323 until it ^c is hit. -# - -probe kernel.function("sys_*").call { - if (target() == tid()) - calltime[tid()] = gettimeofday_us() -} - -probe kernel.function("sys_*").return { - if (target() != tid()) next - now = gettimeofday_us() - c = calltime[tid()] - if (!c) next - ttime[probefunc()] <<< now - c - delete calltime[tid()] -} - -probe end { - printf("\n") - foreach (x in ttime) - printf("%-20s\tcalls:%6d\tavg time (us):%5d\ttotal(us):%7d\n", - x, @count(ttime[x]), @avg(ttime[x]), @sum(ttime[x])) -} - -global calltime, ttime |