Re: [PATCH v3 2/2] perf stat: add interval printing

On Fri, Jan 18, 2013 at 7:30 PM, Andi Kleen wrote: >> if (forks) { >> close(go_pipe[1]); >> + if (interval) { >> + while (!waitpid(child_pid, &status, WNOHANG)) { >> + ret = nanosleep(&ts, NULL); >> +

Re: [PATCH v3 2/2] perf stat: add interval printing

> if (forks) { > close(go_pipe[1]); > + if (interval) { > + while (!waitpid(child_pid, &status, WNOHANG)) { > + ret = nanosleep(&ts, NULL); > + if (ret == 0 && interval) > +

[PATCH v3 2/2] perf stat: add interval printing

This patch adds a new printing mode for perf stat. It allows internval printing. That means perf stat can now print event deltas at regular time interval. This is useful to detect phases in programs. The -I option enables interval printing. It expects an interval duration in milliseconds. Minimum