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tests/gem_gtt_speed: Add modes that force that to the gtt domain

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No sane userspace doesn't upload data to the gpu without actually
using it there ...

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2011-11-30 12:36:29 +01:00
parent 4591d4ba7f
commit 2e88c4ce34
1 changed files with 68 additions and 2 deletions
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70
tests/gem_gtt_speed.c
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@ -127,6 +127,17 @@ static double elapsed(const struct timeval *start,
return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop;
}
static void gem_sync(int fd, uint32_t handle)
{
struct drm_i915_gem_set_domain set_domain;
set_domain.handle = handle;
set_domain.read_domains = I915_GEM_DOMAIN_GTT;
set_domain.write_domain = I915_GEM_DOMAIN_GTT;
drmIoctl(fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain);
}
int main(int argc, char **argv)
{
struct timeval start, end;
@ -144,6 +155,7 @@ int main(int argc, char **argv)
}
buf = malloc(size);
memset(buf, 0, size);
fd = drm_open_any();
handle = gem_create(fd, size);
@ -174,6 +186,16 @@ int main(int argc, char **argv)
size/1024, elapsed(&start, &end, loop));
}
/* prefault into gtt */
{
volatile uint32_t *ptr = gem_mmap(fd, handle, size, PROT_READ);
int x = 0;
for (i = 0; i < size/sizeof(*ptr); i++)
x += ptr[i];
munmap((void *)ptr, size);
}
/* mmap read */
gettimeofday(&start, NULL);
for (loop = 0; loop < 1000; loop++) {
@ -225,7 +247,7 @@ int main(int argc, char **argv)
gem_write(fd, handle, 0, buf, size);
gettimeofday(&end, NULL);
printf("Time to pwrite %dk through the GTT: %7.3fµs\n",
size, elapsed(&start, &end, loop));
size/1024, elapsed(&start, &end, loop));
/* GTT pread */
gettimeofday(&start, NULL);
@ -233,7 +255,51 @@ int main(int argc, char **argv)
gem_read(fd, handle, 0, buf, size);
gettimeofday(&end, NULL);
printf("Time to pread %dk through the GTT: %7.3fµs\n",
size, elapsed(&start, &end, loop));
size/1024, elapsed(&start, &end, loop));
/* GTT pwrite, including clflush */
gettimeofday(&start, NULL);
for (loop = 0; loop < 1000; loop++) {
gem_write(fd, handle, 0, buf, size);
gem_sync(fd, handle);
}
gettimeofday(&end, NULL);
printf("Time to pwrite %dk through the GTT (clflush): %7.3fµs\n",
size/1024, elapsed(&start, &end, loop));
/* GTT pread, including clflush */
gettimeofday(&start, NULL);
for (loop = 0; loop < 1000; loop++) {
gem_sync(fd, handle);
gem_read(fd, handle, 0, buf, size);
}
gettimeofday(&end, NULL);
printf("Time to pread %dk through the GTT (clflush): %7.3fµs\n",
size/1024, elapsed(&start, &end, loop));
/* partial writes */
printf("Now partial writes.\n");
size /= 4;
/* partial GTT pwrite, including clflush */
gettimeofday(&start, NULL);
for (loop = 0; loop < 1000; loop++) {
gem_write(fd, handle, 0, buf, size);
gem_sync(fd, handle);
}
gettimeofday(&end, NULL);
printf("Time to pwrite %dk through the GTT (clflush): %7.3fµs\n",
size/1024, elapsed(&start, &end, loop));
/* partial GTT pread, including clflush */
gettimeofday(&start, NULL);
for (loop = 0; loop < 1000; loop++) {
gem_sync(fd, handle);
gem_read(fd, handle, 0, buf, size);
}
gettimeofday(&end, NULL);
printf("Time to pread %dk through the GTT (clflush): %7.3fµs\n",
size/1024, elapsed(&start, &end, loop));
}
}