Lines Matching +full:wakeup +full:- +full:latency

1 // SPDX-License-Identifier: GPL-2.0
5  * Block a bunch of threads and let parallel waker threads wakeup an
6  * equal amount of them. The program output reflects the avg latency
28 #include <subcmd/parse-options.h>
48 /* all threads will block on the same futex -- hash bucket chaos ;) */
73 	"perf bench futex wake-parallel <options>",
86 	waker->nwoken = futex_wake(&futex, nwakes, futex_flag);  in waking_workerfn()
87 	if (waker->nwoken != nwakes)  in waking_workerfn()
88 		warnx("couldn't wakeup all tasks (%d/%d)",  in waking_workerfn()
89 		      waker->nwoken, nwakes);  in waking_workerfn()
92 	timersub(&end, &start, &waker->runtime);  in waking_workerfn()
111 		 * Thread creation order will impact per-thread latency  in wakeup_threads()
133 	threads_starting--;  in blocked_workerfn()
201 	printf("[Run %d]: Avg per-thread latency (waking %d/%d threads) "  in print_run()
202 	       "in %.4f ms (+-%.2f%%)\n", run_num + 1, wakeup_avg,  in print_run()
216 	printf("Avg per-thread latency (waking %d/%d threads) in %.4f ms (+-%.2f%%)\n",  in print_summary()
282 	 * Each thread will wakeup nwakes tasks in  in bench_futex_wake_parallel()