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Factor in kernel object overhead when checking available memory for tests

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-05-28 09:01:56 +01:00
parent e4ba3b75e6
commit 321273ff76
5 changed files with 49 additions and 17 deletions
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4
lib/igt_aux.h
View File

@ -77,4 +77,8 @@ uint64_t intel_get_avail_ram_mb(void);
uint64_t intel_get_total_ram_mb(void);
uint64_t intel_get_total_swap_mb(void);
bool intel_check_memory(uint32_t count, uint32_t size, unsigned mode);
#define CHECK_RAM 0x1
#define CHECK_SWAP 0x2
#endif /* IGT_AUX_H */

30
lib/intel_os.c
View File

@ -185,6 +185,36 @@ intel_get_total_swap_mb(void)
return retval / (1024*1024);
}
bool intel_check_memory(uint32_t count, uint32_t size, unsigned mode)
{
/* rough estimate of how many bytes the kernel requires to track each object */
#define KERNEL_BO_OVERHEAD 512
uint64_t required, total;
required = count;
required *= size + KERNEL_BO_OVERHEAD;
required = ALIGN(required, 4096);
total = 0;
if (mode & (CHECK_RAM | CHECK_SWAP))
total += intel_get_avail_ram_mb();
if (mode & CHECK_SWAP)
total += intel_get_total_swap_mb();
total *= 1024 * 1024;
if (total <= required) {
igt_log(IGT_LOG_INFO,
"Estimated that we need %llu bytes for the test, but only have %llu bytes available (%s%s)\n",
(long long)required, (long long)total,
mode & CHECK_RAM ? "RAM" : "",
mode & CHECK_SWAP ? " + swap": "");
return 0;
}
return 1;
}
void
intel_purge_vm_caches(void)
{

25
tests/eviction_common.c
View File

@ -101,13 +101,12 @@ static int minor_evictions(int fd, struct igt_eviction_test_ops *ops,
}
static int major_evictions(int fd, struct igt_eviction_test_ops *ops,
int surface_size, int nr_surfaces)
int surface_size, int nr_surfaces)
{
int n, m, loop;
uint32_t *bo;
igt_require((uint64_t)nr_surfaces * surface_size / (1024 * 1024)
< intel_get_total_ram_mb() * 9 / 10);
igt_require(intel_check_memory(nr_surfaces, surface_size, CHECK_RAM));
bo = malloc(nr_surfaces*sizeof(*bo));
igt_assert(bo);
@ -128,19 +127,20 @@ static int major_evictions(int fd, struct igt_eviction_test_ops *ops,
}
static int swapping_evictions(int fd, struct igt_eviction_test_ops *ops,
int surface_size,
int working_surfaces,
int trash_surfaces)
int surface_size,
int working_surfaces,
int trash_surfaces)
{
uint32_t *bo;
int i, n, pass;
igt_require((uint64_t)working_surfaces * surface_size / (1024 * 1024)
< intel_get_total_ram_mb() * 9 / 10);
igt_require(intel_check_memory(working_surfaces, surface_size, CHECK_RAM));
if (trash_surfaces < working_surfaces)
trash_surfaces = working_surfaces;
igt_require(intel_check_memory(trash_surfaces, surface_size, CHECK_RAM | CHECK_SWAP));
bo = malloc(trash_surfaces*sizeof(*bo));
igt_assert(bo);
@ -173,19 +173,18 @@ static int forking_evictions(int fd, struct igt_eviction_test_ops *ops,
int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
int bo_count;
igt_require((uint64_t)working_surfaces * surface_size / (1024 * 1024)
< intel_get_total_ram_mb() * 9 / 10);
igt_require(intel_check_memory(working_surfaces, surface_size, CHECK_RAM));
if (flags & FORKING_EVICTIONS_SWAPPING) {
igt_require(intel_get_total_ram_mb() / 4
< intel_get_total_swap_mb());
bo_count = trash_surfaces;
if (bo_count < working_surfaces)
bo_count = working_surfaces;
} else
bo_count = working_surfaces;
igt_require(intel_check_memory(bo_count, surface_size, CHECK_RAM | CHECK_SWAP));
bo = malloc(bo_count*sizeof(*bo));
igt_assert(bo);

4
tests/gem_evict_everything.c
View File

@ -150,6 +150,7 @@ static void test_forking_evictions(int fd, int size, int count,
int trash_count;
trash_count = intel_get_total_ram_mb() * 11 / 10;
igt_require(intel_check_memory(trash_count, size, CHECK_RAM | CHECK_SWAP));
forking_evictions(fd, &fault_ops, size, count, trash_count, flags);
}
@ -158,9 +159,8 @@ static void test_swapping_evictions(int fd, int size, int count)
{
int trash_count;
igt_require(intel_get_total_ram_mb() / 4 < intel_get_total_swap_mb());
trash_count = intel_get_total_ram_mb() * 11 / 10;
igt_require(intel_check_memory(trash_count, size, CHECK_RAM | CHECK_SWAP));
swapping_evictions(fd, &fault_ops, size, count, trash_count);
}

3
tests/gem_tiled_swapping.c
View File

@ -171,8 +171,7 @@ igt_simple_main
(long)intel_get_avail_ram_mb(),
(long)intel_get_total_ram_mb(),
(long)intel_get_total_swap_mb());
igt_require(count < intel_get_avail_ram_mb() + intel_get_total_swap_mb());
igt_require(intel_check_memory(count, 1024*1024, CHECK_RAM | CHECK_SWAP));
for (n = 0; n < count; n++) {
bo_handles[n] = create_bo_and_fill(fd);