Edit File: hugepage_cow_delays.stp
#!/usr/bin/stap global huge_cow probe kernel.function("copy_user_huge_page").return { huge_cow [execname(), pid()] <<< (gettimeofday_us() - @entry(gettimeofday_us())) } probe begin { printf("Collecting data... press Ctrl-C to stop.\n") } probe end { printf("\n") foreach([name, p] in huge_cow-) { printf("%16s(%5d) count=%d sum(us)=%d avg(us)=%d\n", name, p, @count(huge_cow[name,p]), @sum(huge_cow[name,p]), @avg(huge_cow[name,p])) } }