search for: tsfrac

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2009 Sep 09
10
dtrace overhead and proper measuring technique
...ts = 0; } pid$target::nsMenuX??MenuConstruct*:entry { self->ts = timestamp; self->vts = vtimestamp; } pid$target::nsMenuX??MenuConstruct*:return /self->ts/ { this->ts = timestamp - self->ts; this->vts = vtimestamp - self->vts; @tsint = sum(this->ts / 1000000); @tsfrac = sum(this->ts % 1000000); @vtsint = sum(this->vts / 1000000); @vtsfrac = sum(this->vts % 1000000); @n = count(); self->ts = 0; self->vts = 0; /*ustack();*/ } END { t = timestamp; printa("elapsed: %@u.%@06ums\n", @tsint, @tsfrac); printa("cpu : %@...
2009 Sep 09
4
usdt probes vs pid$target
...t;\n"); printf("# roots: %u\n", self->roots); printf("elapsed: %u.%06ums\n", this->ts / 1000000, this->ts % 1000000); printf("cpu : %u.%06ums\n", this->vts / 1000000, this->vts % 1000000); @tsint = sum(this->ts / 1000000); @tsfrac = sum(this->ts % 1000000); @vtsint = sum(this->vts / 1000000); @vtsfrac = sum(this->vts % 1000000); @n = count(); self->ts = 0; self->vts = 0; ustack(); } END { t = timestamp; printf("\n\n----------------------\n"); printa("elapsed: %@u.%@...