aboutsummaryrefslogtreecommitdiff
path: root/tests
diff options
context:
space:
mode:
authorAnthony Liguori <anthony@codemonkey.ws>2013-09-23 11:53:05 -0500
committerAnthony Liguori <anthony@codemonkey.ws>2013-09-23 11:53:05 -0500
commit16121fa39e1ec17308162af4de5c5f6c01c1cce1 (patch)
treee51c28fbcfca41313aa3fd9e9e052be54c69b99c /tests
parent2e6ae666c8ccaa7fd26d7102c5c9bed24dc02b1d (diff)
parentef5bc96268ceec64769617dc53b0ac3a20ff351c (diff)
downloadqemu-16121fa39e1ec17308162af4de5c5f6c01c1cce1.zip
qemu-16121fa39e1ec17308162af4de5c5f6c01c1cce1.tar.gz
qemu-16121fa39e1ec17308162af4de5c5f6c01c1cce1.tar.bz2
Merge remote-tracking branch 'stefanha/block' into staging
# By Stefan Hajnoczi (4) and others # Via Stefan Hajnoczi * stefanha/block: virtio-blk: do not relay a previous driver's WCE configuration to the current blockdev: do not default cache.no-flush to true block: don't lose data from last incomplete sector qcow2: Correct snapshots size for overlap check coroutine: fix /perf/nesting coroutine benchmark coroutine: add qemu_coroutine_yield benchmark qemu-timer: do not take the lock in timer_pending qemu-timer: make qemu_timer_mod_ns() and qemu_timer_del() thread-safe qemu-timer: drop outdated signal safety comments osdep: warn if open(O_DIRECT) on fails with EINVAL libcacard: link against qemu-error.o for error_report() Message-id: 1379698931-946-1-git-send-email-stefanha@redhat.com
Diffstat (limited to 'tests')
-rw-r--r--tests/test-coroutine.c45
1 files changed, 39 insertions, 6 deletions
diff --git a/tests/test-coroutine.c b/tests/test-coroutine.c
index 39be046..15a885e 100644
--- a/tests/test-coroutine.c
+++ b/tests/test-coroutine.c
@@ -182,17 +182,17 @@ static void perf_nesting(void)
unsigned int i, maxcycles, maxnesting;
double duration;
- maxcycles = 100000000;
+ maxcycles = 10000;
maxnesting = 1000;
Coroutine *root;
- NestData nd = {
- .n_enter = 0,
- .n_return = 0,
- .max = maxnesting,
- };
g_test_timer_start();
for (i = 0; i < maxcycles; i++) {
+ NestData nd = {
+ .n_enter = 0,
+ .n_return = 0,
+ .max = maxnesting,
+ };
root = qemu_coroutine_create(nest);
qemu_coroutine_enter(root, &nd);
}
@@ -202,6 +202,38 @@ static void perf_nesting(void)
maxcycles, maxnesting, duration);
}
+/*
+ * Yield benchmark
+ */
+
+static void coroutine_fn yield_loop(void *opaque)
+{
+ unsigned int *counter = opaque;
+
+ while ((*counter) > 0) {
+ (*counter)--;
+ qemu_coroutine_yield();
+ }
+}
+
+static void perf_yield(void)
+{
+ unsigned int i, maxcycles;
+ double duration;
+
+ maxcycles = 100000000;
+ i = maxcycles;
+ Coroutine *coroutine = qemu_coroutine_create(yield_loop);
+
+ g_test_timer_start();
+ while (i > 0) {
+ qemu_coroutine_enter(coroutine, &i);
+ }
+ duration = g_test_timer_elapsed();
+
+ g_test_message("Yield %u iterations: %f s\n",
+ maxcycles, duration);
+}
int main(int argc, char **argv)
{
@@ -214,6 +246,7 @@ int main(int argc, char **argv)
if (g_test_perf()) {
g_test_add_func("/perf/lifecycle", perf_lifecycle);
g_test_add_func("/perf/nesting", perf_nesting);
+ g_test_add_func("/perf/yield", perf_yield);
}
return g_test_run();
}