intel/tests: Reduce load from anv_tests

anv_tests tries to create a large number of threads, all of which wait
to be able to execute simultaneously, then launch a reasonable-size
workload.

Under load, cloning each of the 16 threads takes 15ms serially, for a
delay of 240ms before the tests start running; running the test 64
times gives us 15.36s for a single testcase in isolation, assuming that
the bits which aren't forking are free.

To give it the best shot at completing in time, mark it as a
non-parallelisable test (since Meson will also try to parallelise it
out), and also halve the number of runs it attempts. And then give it a
longer timeout so it doesn't fail even in extremis.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31059>

src/intel/vulkan/meson.build

@@ -333,5 +333,7 @@ if with_tests
     ),
     suite : ['intel'],
     protocol : 'gtest',
+    is_parallel : false,
+    timeout : 60,
   )
 endif

src/intel/vulkan/tests/block_pool_no_free.c

@@ -26,9 +26,9 @@
 #include "anv_private.h"
 #include "test_common.h"
 
-#define NUM_THREADS 16
+#define NUM_THREADS 8
 #define BLOCKS_PER_THREAD 1024
-#define NUM_RUNS 64
+#define NUM_RUNS 32
 
 static struct job {
    pthread_t thread;

src/intel/vulkan/tests/state_pool.c

@@ -45,7 +45,7 @@ void state_pool_test(void)
    pthread_mutex_init(&device.mutex, NULL);
    anv_bo_cache_init(&device.bo_cache, &device);
 
-   const unsigned num_runs = 64;
+   const unsigned num_runs = 32;
    const uint32_t _1Gb = 1024 * 1024 * 1024;
    for (unsigned i = 0; i < num_runs; i++) {
       anv_state_pool_init(&state_pool, &device,

src/intel/vulkan/tests/state_pool_max_size.c

@@ -26,7 +26,7 @@
 #include "anv_private.h"
 #include "test_common.h"
 
-#define NUM_THREADS 16
+#define NUM_THREADS 8
 #define STATES_PER_THREAD 1024
 #define NUM_RUNS 1
 

src/intel/vulkan/tests/state_pool_no_free.c

@@ -26,9 +26,9 @@
 #include "anv_private.h"
 #include "test_common.h"
 
-#define NUM_THREADS 16
+#define NUM_THREADS 8
 #define STATES_PER_THREAD 1024
-#define NUM_RUNS 64
+#define NUM_RUNS 32
 
 static struct job {
    pthread_t thread;