diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-24 18:54:19 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-24 18:55:59 +0000 |
| commit | 94647cd8315d63867f57f716380601bdf8595ee7 (patch) | |
| tree | 9a81c33e94da2b5a0f94f92ddaa9b6b53bfc65a5 /tests/i915/sysfs_clients.c | |
| parent | 32b697348f2687083a710ad240ff09aec3cb2088 (diff) | |
i915/sysfs_clients: Use the centre-point of read_runtime()
Compare the runtime against the centre of the read_runtime, to try and
compensate for scheduling delays.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'tests/i915/sysfs_clients.c')
| -rw-r--r-- | tests/i915/sysfs_clients.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/tests/i915/sysfs_clients.c b/tests/i915/sysfs_clients.c index e3932af3..d4c92245 100644 --- a/tests/i915/sysfs_clients.c +++ b/tests/i915/sysfs_clients.c @@ -345,14 +345,16 @@ busy_one(int i915, int clients, const struct intel_execution_engine2 *e) /* Compensate for discrepancies in execution latencies */ idle = old = read_runtime(me, e->class); igt_nsec_elapsed(memset(&tv, 0, sizeof(tv))); - for (int pass = 0; pass <= 10; pass++) { usleep(1500 >> pass); - delay = igt_nsec_elapsed(&tv) + idle; - igt_debug("delay: %'"PRIu64"ns\n", delay); /* Check that we accumulate the runtime, while active */ + delay = igt_nsec_elapsed(&tv); active = read_runtime(me, e->class); + delay += igt_nsec_elapsed(&tv); + delay /= 2; /* use the centre point of the read_runtime() */ + delay += idle; /* tare */ + igt_info("active1[%d]: %'"PRIu64"ns (%'"PRIu64"ns)\n", pass, active, delay); igt_assert(active > old); /* monotonic */ @@ -400,14 +402,18 @@ busy_one(int i915, int clients, const struct intel_execution_engine2 *e) igt_spin_busywait_until_started(spin); usleep(10); /* kick the tasklets */ + idle = old = read_runtime(me, e->class); igt_nsec_elapsed(memset(&tv, 0, sizeof(tv))); - idle = read_runtime(me, e->class); for (int pass = 0; pass <= 10; pass++) { usleep(1000 >> pass); - delay = igt_nsec_elapsed(&tv) + idle; - igt_debug("delay: %'"PRIu64"ns\n", delay); + /* Check that we accumulate the runtime, while active */ + delay = igt_nsec_elapsed(&tv); active = read_runtime(me, e->class); + delay += igt_nsec_elapsed(&tv); + delay /= 2; /* use the centre point of the read_runtime() */ + delay += idle; /* tare */ + igt_info("active0[%d]: %'"PRIu64"ns (%'"PRIu64"ns)\n", pass, active, delay); igt_assert(active > old); |