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igt/gem_read_read_speed: Speed up batch submission

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Create the RCS and BCS batches once and reuse them to avoid the
rewriting and relocation overhead on every submission - the goal is to
focus on the interring synchronisation overhead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-03-18 08:33:54 +00:00
parent d3e9316b44
commit 484c1a6f1c
1 changed files with 47 additions and 21 deletions
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68
tests/gem_read_read_speed.c
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@ -90,7 +90,7 @@ static int semaphores_enabled(int fd)
return detected;
}
static void rcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
static drm_intel_bo *rcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
{
struct igt_buf d = {
.bo = dst,
@ -104,6 +104,8 @@ static void rcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
.stride = width * 4,
};
uint32_t swizzle;
drm_intel_bo *bo = batch->bo;
drm_intel_bo_reference(bo);
drm_intel_bo_get_tiling(dst, &d.tiling, &swizzle);
drm_intel_bo_get_tiling(src, &s.tiling, &swizzle);
@ -112,14 +114,21 @@ static void rcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
&s, 0, 0,
width, height,
&d, 0, 0);
return bo;
}
static void bcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
static drm_intel_bo *bcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src)
{
drm_intel_bo *bo = batch->bo;
drm_intel_bo_reference(bo);
intel_blt_copy(batch,
src, 0, 0, 4*width,
dst, 0, 0, 4*width,
width, height, 32);
return bo;
}
static void
@ -128,7 +137,7 @@ set_bo(drm_intel_bo *bo, uint32_t val)
int size = width * height;
uint32_t *vaddr;
do_or_die(drm_intel_gem_bo_map_gtt(bo));
do_or_die(drm_intel_bo_map(bo, 1));
vaddr = bo->virtual;
while (size--)
*vaddr++ = val;
@ -142,25 +151,43 @@ static double elapsed(const struct timespec *start,
return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_nsec - start->tv_nsec)/1000)/loop;
}
static drm_intel_bo *create_bo(drm_intel_bufmgr *bufmgr,
const char *name)
{
uint32_t tiling_mode = I915_TILING_X;
unsigned long pitch;
return drm_intel_bo_alloc_tiled(bufmgr, name,
width, height, 4,
&tiling_mode, &pitch, 0);
}
static void run(drm_intel_bufmgr *bufmgr, int _width, int _height)
{
drm_intel_bo *src = NULL, *bcs = NULL, *rcs = NULL;
drm_intel_bo *bcs_batch, *rcs_batch;
struct timespec start, end;
int loops = 1000;
width = _width;
height = _height;
src = drm_intel_bo_alloc(bufmgr, "src", 4*width*height, 0);
bcs = drm_intel_bo_alloc(bufmgr, "bcs", 4*width*height, 0);
rcs = drm_intel_bo_alloc(bufmgr, "rcs", 4*width*height, 0);
src = create_bo(bufmgr, "src");
bcs = create_bo(bufmgr, "bcs");
rcs = create_bo(bufmgr, "rcs");
set_bo(src, 0xdeadbeef);
rcs_batch = rcs_copy_bo(rcs, src);
bcs_batch = bcs_copy_bo(bcs, src);
drm_intel_bo_unreference(rcs);
drm_intel_bo_unreference(bcs);
drm_intel_gem_bo_start_gtt_access(src, true);
clock_gettime(CLOCK_MONOTONIC, &start);
for (int i = 0; i < loops; i++) {
rcs_copy_bo(rcs, src);
bcs_copy_bo(bcs, src);
drm_intel_gem_bo_context_exec(rcs_batch, NULL, 4096, I915_EXEC_RENDER);
drm_intel_gem_bo_context_exec(bcs_batch, NULL, 4096, I915_EXEC_BLT);
}
drm_intel_gem_bo_start_gtt_access(src, true);
clock_gettime(CLOCK_MONOTONIC, &end);
@ -169,15 +196,17 @@ static void run(drm_intel_bufmgr *bufmgr, int _width, int _height)
width, height, 4*width*height/1024,
elapsed(&start, &end, loops));
drm_intel_bo_unreference(rcs);
drm_intel_bo_unreference(bcs);
drm_intel_bo_unreference(rcs_batch);
drm_intel_bo_unreference(bcs_batch);
drm_intel_bo_unreference(src);
}
igt_main
{
drm_intel_bufmgr *bufmgr;
int fd;
const int sizes[] = {1, 128, 256, 512, 1024, 2048, 4096, 8192, 0};
drm_intel_bufmgr *bufmgr = NULL;
int fd, i;
igt_skip_on_simulation();
@ -185,9 +214,9 @@ igt_main
int devid;
fd = drm_open_any();
igt_info("Semaphores: %d\n", semaphores_enabled(fd));
devid = intel_get_drm_devid(fd);
igt_require(intel_gen(devid) >= 6);
rendercopy = igt_get_render_copyfunc(devid);
igt_require(rendercopy);
@ -196,14 +225,11 @@ igt_main
igt_assert(bufmgr);
batch = intel_batchbuffer_alloc(bufmgr, devid);
igt_info("Semaphores: %d\n", semaphores_enabled(fd));
}
igt_subtest("read-read-1x1")
run(bufmgr, 1, 1);
igt_subtest("read-read-512x512")
run(bufmgr, 512, 512);
igt_subtest("read-read-4096x4096")
run(bufmgr, 4096, 4096);
for (i = 0; sizes[i] != 0; i++)
igt_subtest_f("read-read-%dx%d", sizes[i], sizes[i])
run(bufmgr, sizes[i], sizes[i]);
}