diff options
| -rw-r--r-- | benchmarks/gem_blt.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/benchmarks/gem_blt.c b/benchmarks/gem_blt.c index 424ce8e7..bd8264b4 100644 --- a/benchmarks/gem_blt.c +++ b/benchmarks/gem_blt.c @@ -57,29 +57,21 @@ elapsed(const struct timespec *start, const struct timespec *end) return (end->tv_sec - start->tv_sec) + 1e-9*(end->tv_nsec - start->tv_nsec); } -static int baseline(uint64_t bytes, int milliseconds) +static int baseline(int fd, struct drm_i915_gem_execbuffer2 execbuf, int milliseconds) { struct timespec start, end; - const int size = 64*1024*1024; int count = 0; - void *mem; - - mem = malloc(size); - if (mem == NULL) - return 1; clock_gettime(CLOCK_MONOTONIC, &start); do { - memset(mem, count, size); + gem_execbuf(fd, &execbuf); count++; clock_gettime(CLOCK_MONOTONIC, &end); - if (elapsed(&start, &end) > 0.1) + if (elapsed(&start, &end) > (milliseconds / 1000.)) break; } while (1); - free(mem); - - return ceil(1e-3*milliseconds/elapsed(&start, &end) * count * size / bytes); + return count; } static int gem_linear_blt(int fd, @@ -260,7 +252,7 @@ static int run(int object, int batch, int time, int reps, int ncpus, unsigned fl execbuf.flags |= I915_EXEC_NO_RELOC; /* Guess how many loops we need for 0.1s */ - count = baseline((uint64_t)object * batch, 100) / ncpus; + count = baseline(fd, execbuf, 100) / ncpus; if (flags & SYNC) { time *= count / 2; count = 1; |