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gem_pwrite_pread: Measure how long it takes to upload/copy/download
Further trying to determine the effects of setting snooping.
This commit is contained in:
Chris Wilson
parent
ab6ac67243
commit
e4a7c2fe6d
@ -73,6 +73,7 @@ TESTS_progs = \
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gem_pipe_control_store_loop \
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gem_pread \
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gem_pwrite \
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gem_pwrite_pread \
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gem_readwrite \
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gem_reg_read \
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gem_reloc_overflow \
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230
tests/gem_pwrite_pread.c
Normal file
230
tests/gem_pwrite_pread.c
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@ -0,0 +1,230 @@
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/*
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* Copyright © 2011 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Chris Wilson <chris@chris-wilson.co.uk>
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*
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include "drm.h"
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#include "i915_drm.h"
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#include "drmtest.h"
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#include "intel_bufmgr.h"
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#include "intel_batchbuffer.h"
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#include "intel_gpu_tools.h"
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#define OBJECT_SIZE 16384
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#define COPY_BLT_CMD (2<<29|0x53<<22|0x6)
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#define BLT_WRITE_ALPHA (1<<21)
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#define BLT_WRITE_RGB (1<<20)
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#define BLT_SRC_TILED (1<<15)
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#define BLT_DST_TILED (1<<11)
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static void copy(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
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{
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struct drm_i915_gem_relocation_entry reloc[] = {
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{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
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{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
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};
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struct drm_i915_gem_exec_object2 exec[] = {
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{ src },
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{ dst },
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{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
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};
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uint32_t batch[] = {
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COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
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0xcc << 16 | 1 << 25 | 1 << 24 | len,
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0,
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1 << 16 | (len / 4),
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0, /* dst */
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0,
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len,
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0, /* src */
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MI_BATCH_BUFFER_END,
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0
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};
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struct drm_i915_gem_execbuffer2 execbuf = {
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(uintptr_t)exec, 3,
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0, sizeof(batch),
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0, 0, 0, 0,
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HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
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};
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gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
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while (loops--) {
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gem_write(fd, src, 0, buf, len);
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do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
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gem_read(fd, dst, 0, buf, len);
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}
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gem_close(fd, exec[2].handle);
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}
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static void test(int fd, uint32_t src, uint32_t dst, uint32_t *buf, int len)
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{
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struct drm_i915_gem_relocation_entry reloc[] = {
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{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
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{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
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};
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struct drm_i915_gem_exec_object2 exec[] = {
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{ src },
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{ dst },
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{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
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};
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uint32_t batch[] = {
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COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
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0xcc << 16 | 1 << 25 | 1 << 24 | len,
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0,
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1 << 16 | (len / 4),
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0, /* dst */
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0,
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len,
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0, /* src */
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MI_BATCH_BUFFER_END,
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0
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};
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struct drm_i915_gem_execbuffer2 execbuf = {
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(uintptr_t)exec, 3,
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0, sizeof(batch),
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0, 0, 0, 0,
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HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
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};
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int i;
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gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
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for (i = 0; i < len/4; i++)
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buf[i] = i;
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gem_write(fd, src, 0, buf, len);
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memset(buf, 0, len);
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do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
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gem_read(fd, dst, 0, buf, len);
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gem_close(fd, exec[2].handle);
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for (i = 0; i < len/4; i++)
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assert(buf[i] == i);
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}
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static double elapsed(const struct timeval *start,
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const struct timeval *end,
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int loop)
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{
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return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop;
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}
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static const char *bytes_per_sec(char *buf, double v)
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{
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const char *order[] = {
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"",
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"KiB",
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"MiB",
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"GiB",
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"TiB",
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NULL,
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}, **o = order;
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while (v > 1000 && o[1]) {
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v /= 1000;
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o++;
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}
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sprintf(buf, "%.1f%s/s", v, *o);
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return buf;
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}
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int main(int argc, char **argv)
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{
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int object_size = 0;
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uint32_t buf[20];
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uint32_t *tmp, src, dst;
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int fd, count;
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drmtest_skip_on_simulation();
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if (argc > 1)
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object_size = atoi(argv[1]);
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if (object_size == 0)
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object_size = OBJECT_SIZE;
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object_size = (object_size + 3) & -4;
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fd = drm_open_any();
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dst = gem_create(fd, object_size);
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src = gem_create(fd, object_size);
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tmp = malloc(object_size);
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gem_set_cacheing(fd, src, 0);
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gem_set_cacheing(fd, dst, 0);
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test(fd, src, dst, tmp, object_size);
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for (count = 1; count <= 1<<17; count <<= 1) {
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struct timeval start, end;
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gettimeofday(&start, NULL);
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copy(fd, src, dst, tmp, object_size, count);
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gettimeofday(&end, NULL);
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printf("Time to uncached copy %d bytes x %6d: %7.3fµs, %s\n",
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object_size, count,
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elapsed(&start, &end, count),
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bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
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fflush(stdout);
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}
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gem_set_cacheing(fd, src, 1);
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gem_set_cacheing(fd, dst, 1);
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test(fd, src, dst, tmp, object_size);
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for (count = 1; count <= 1<<17; count <<= 1) {
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struct timeval start, end;
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gettimeofday(&start, NULL);
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copy(fd, src, dst, tmp, object_size, count);
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gettimeofday(&end, NULL);
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printf("Time to snooped copy %d bytes x %6d: %7.3fµs, %s\n",
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object_size, count,
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elapsed(&start, &end, count),
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bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
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fflush(stdout);
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}
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free(tmp);
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gem_close(fd, src);
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gem_close(fd, dst);
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close(fd);
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return 0;
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}
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