From patchwork Thu Feb 16 12:14:06 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: test-coroutine: add performance test for nesting Date: Thu, 16 Feb 2012 02:14:06 -0000 From: Alex Barcelo X-Patchwork-Id: 141583 Message-Id: <1329394446-31711-1-git-send-email-abarcelo@ac.upc.edu> To: qemu-devel@nongnu.org Cc: Alex Barcelo , Stefan Hajnoczi The performance test will also check for nesting. It will do a certain quantity of cycles, and each of one will do a depth nesting process. This is useful for benchmarking the creation of coroutines, given that nesting is creation-intensive (and the other perf test does not benchmark that). Signed-off-by: Alex Barcelo --- test-coroutine.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/test-coroutine.c b/test-coroutine.c index bf9f3e9..7425dad 100644 --- a/test-coroutine.c +++ b/test-coroutine.c @@ -177,6 +177,32 @@ static void perf_lifecycle(void) g_test_message("Lifecycle %u iterations: %f s\n", max, duration); } +static void perf_nesting(void) +{ + unsigned int i, maxcycles, maxnesting; + double duration; + + maxcycles = 100000000; + maxnesting = 200000; + Coroutine *root; + NestData nd = { + .n_enter = 0, + .n_return = 0, + .max = maxnesting, + }; + + g_test_timer_start(); + for (i = 0; i < maxcycles; i++) { + root = qemu_coroutine_create(nest); + qemu_coroutine_enter(root, &nd); + } + duration = g_test_timer_elapsed(); + + g_test_message("Nesting %u iterations of %u depth each: %f s\n", + maxcycles, maxnesting, duration); +} + + int main(int argc, char **argv) { g_test_init(&argc, &argv, NULL); @@ -187,6 +213,7 @@ int main(int argc, char **argv) g_test_add_func("/basic/in_coroutine", test_in_coroutine); if (g_test_perf()) { g_test_add_func("/perf/lifecycle", perf_lifecycle); + g_test_add_func("/perf/nesting", perf_nesting); } return g_test_run(); }