diff options
author | Chris Wilson <chris@chris-wilson.co.uk> | 2015-03-16 15:14:14 +0000 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2015-03-17 09:43:52 +0000 |
commit | ed7e33451e91e1b4cde7553ccbe31e09562c87f7 (patch) | |
tree | 13e80412328741d9fa541bd57a5d342641773fe1 /tests/gem_read_read_speed.c | |
parent | 505645c2ab90404067c7817072a1b8eda316e67e (diff) |
igt: Add benchmark for read-read optimisation
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'tests/gem_read_read_speed.c')
-rw-r--r-- | tests/gem_read_read_speed.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/tests/gem_read_read_speed.c b/tests/gem_read_read_speed.c new file mode 100644 index 00000000..a3843a24 --- /dev/null +++ b/tests/gem_read_read_speed.c @@ -0,0 +1,209 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/** @file gem_read_read_speed.c + * + * This is a test of performance with multiple readers from the same source. + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <fcntl.h> +#include <inttypes.h> +#include <errno.h> +#include <time.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/wait.h> + +#include <drm.h> + +#include "ioctl_wrappers.h" +#include "drmtest.h" +#include "igt_aux.h" +#include "igt_core.h" +#include "igt_gt.h" +#include "intel_bufmgr.h" +#include "intel_batchbuffer.h" +#include "intel_io.h" +#include "intel_chipset.h" + +IGT_TEST_DESCRIPTION("Test speed of concurrent reads between engines."); + +igt_render_copyfunc_t rendercopy; +struct intel_batchbuffer *batch; +int width, height; + +static int gem_param(int fd, int name) +{ + drm_i915_getparam_t gp; + int v = -1; /* No param uses the sign bit, reserve it for errors */ + + memset(&gp, 0, sizeof(gp)); + gp.param = name; + gp.value = &v; + if (drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp)) + return -1; + + return v; +} + +static int semaphores_enabled(int fd) +{ + FILE *file; + int detected = -1; + int ret; + + ret = gem_param(fd, 20); + if (ret != -1) + return ret > 0; + + file = fopen("/sys/module/i915/parameters/semaphores", "r"); + if (file) { + int value; + if (fscanf(file, "%d", &value) == 1) + detected = value; + fclose(file); + } + + return detected; +} + +static void rcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src) +{ + struct igt_buf d = { + .bo = dst, + .size = width * height * 4, + .num_tiles = width * height * 4, + .stride = width * 4, + }, s = { + .bo = src, + .size = width * height * 4, + .num_tiles = width * height * 4, + .stride = width * 4, + }; + uint32_t swizzle; + + drm_intel_bo_get_tiling(dst, &d.tiling, &swizzle); + drm_intel_bo_get_tiling(src, &s.tiling, &swizzle); + + rendercopy(batch, NULL, + &s, 0, 0, + width, height, + &d, 0, 0); +} + +static void bcs_copy_bo(drm_intel_bo *dst, drm_intel_bo *src) +{ + intel_blt_copy(batch, + src, 0, 0, 4*width, + dst, 0, 0, 4*width, + width, height, 32); +} + +static void +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)); + vaddr = bo->virtual; + while (size--) + *vaddr++ = val; + drm_intel_bo_unmap(bo); +} + +static double elapsed(const struct timespec *start, + const struct timespec *end, + int loop) +{ + return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_nsec - start->tv_nsec)/1000)/loop; +} + +static void run(drm_intel_bufmgr *bufmgr, int _width, int _height) +{ + drm_intel_bo *src = NULL, *bcs = NULL, *rcs = NULL; + 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); + + set_bo(src, 0xdeadbeef); + + 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_start_gtt_access(src, true); + clock_gettime(CLOCK_MONOTONIC, &end); + + igt_info("Time to read-read %dx%d [%dk]: %7.3fµs\n", + width, height, 4*width*height/1024, + elapsed(&start, &end, loops)); + + drm_intel_bo_unreference(rcs); + drm_intel_bo_unreference(bcs); + drm_intel_bo_unreference(src); +} + +igt_main +{ + drm_intel_bufmgr *bufmgr; + int fd; + + igt_skip_on_simulation(); + + igt_fixture { + int devid; + + fd = drm_open_any(); + igt_info("Semaphores: %d\n", semaphores_enabled(fd)); + + devid = intel_get_drm_devid(fd); + + rendercopy = igt_get_render_copyfunc(devid); + igt_require(rendercopy); + + bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); + igt_assert(bufmgr); + + batch = intel_batchbuffer_alloc(bufmgr, devid); + } + + 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); +} |