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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 13:12:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 13:13:40 +0000 |
| commit | e7a0d06730f77842998368660fb45fe5c1738fda (patch) | |
| tree | 9cf712e244b79c1ed35c770699bbb9ddbe3cbc6a | |
| parent | 2debc96208a7d433ce1a313945fe5aa1a87192c4 (diff) | |
igt/gem_exec_nop: Sync before measuring total elapsed time
The systematic error should be lost in the millions of cycles, but
better pedagogically correct.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | tests/gem_exec_nop.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/gem_exec_nop.c b/tests/gem_exec_nop.c index 5a2f1b93..5d0d4957 100644 --- a/tests/gem_exec_nop.c +++ b/tests/gem_exec_nop.c @@ -387,6 +387,9 @@ static void sequential(int fd, uint32_t handle, unsigned flags, int timeout) count += 1024; clock_gettime(CLOCK_MONOTONIC, &now); } while (elapsed(&start, &now) < timeout); /* Hang detection ~120s */ + + gem_sync(fd, obj[0].handle); + clock_gettime(CLOCK_MONOTONIC, &now); results[child] = elapsed(&start, &now) / count; if (flags & CONTEXT) |