#include <vppinfra/error.h>
#include <sys/resource.h>
#include <stdio.h>
+#include <pthread.h>
#include <vppinfra/bihash_8_8.h>
#include <vppinfra/bihash_template.h>
typedef struct
{
+ volatile u32 thread_barrier;
+ volatile u32 threads_running;
+ volatile u64 sequence_number;
u64 seed;
u32 nbuckets;
u32 nitems;
u32 ncycles;
u32 report_every_n;
u32 search_iter;
+ u32 noverwritten;
int careful_delete_tests;
int verbose;
int non_random_keys;
+ u32 nthreads;
uword *key_hash;
u64 *keys;
uword hash_memory_size;
BVT (clib_bihash) hash;
clib_time_t clib_time;
+ void *global_heap;
unformat_input_t *input;
h = &tm->hash;
+#if BIHASH_32_64_SVM
+ BV (clib_bihash_master_init_svm) (h, "test", user_buckets,
+ 0x30000000 /* base_addr */ ,
+ user_memory_size);
+#else
BV (clib_bihash_init) (h, "test", user_buckets, user_memory_size);
+#endif
before = clib_time_now (&tm->clib_time);
return 0;
}
+static int
+stale_cb (BVT (clib_bihash_kv) * kv, void *ctx)
+{
+ test_main_t *tm = ctx;
+
+ tm->noverwritten++;
+
+ return 1;
+}
+
+static clib_error_t *
+test_bihash_stale_overwrite (test_main_t * tm)
+{
+ BVT (clib_bihash) * h;
+ BVT (clib_bihash_kv) kv;
+ int i;
+ tm->noverwritten = 0;
+
+ h = &tm->hash;
+
+#if BIHASH_32_64_SVM
+ BV (clib_bihash_master_init_svm) (h, "test", tm->nbuckets,
+ 0x30000000 /* base_addr */ ,
+ tm->hash_memory_size);
+#else
+ BV (clib_bihash_init) (h, "test", tm->nbuckets, tm->hash_memory_size);
+#endif
+
+ fformat (stdout, "Add %d items to %d buckets\n", tm->nitems, tm->nbuckets);
+
+ for (i = 0; i < tm->nitems; i++)
+ {
+ kv.key = i;
+ kv.value = 1;
+
+ BV (clib_bihash_add_or_overwrite_stale) (h, &kv, stale_cb, tm);
+ }
+
+ fformat (stdout, "%d items overwritten\n", tm->noverwritten);
+ fformat (stdout, "%U", BV (format_bihash), h, 0);
+
+ return 0;
+}
+
+void *
+test_bihash_thread_fn (void *arg)
+{
+ BVT (clib_bihash) * h;
+ BVT (clib_bihash_kv) kv;
+ test_main_t *tm = &test_main;
+
+ int i, j;
+
+ u32 my_thread_index = (u32) (u64) arg;
+ __os_thread_index = my_thread_index;
+ clib_mem_set_per_cpu_heap (tm->global_heap);
+
+ while (tm->thread_barrier)
+ ;
+
+ h = &tm->hash;
+
+ for (i = 0; i < tm->ncycles; i++)
+ {
+ for (j = 0; j < tm->nitems; j++)
+ {
+ kv.key = ((u64) my_thread_index << 32) | (u64) j;
+ kv.value = ((u64) my_thread_index << 32) | (u64) j;
+ (void) __atomic_add_fetch (&tm->sequence_number, 1,
+ __ATOMIC_ACQUIRE);
+ BV (clib_bihash_add_del) (h, &kv, 1 /* is_add */ );
+ }
+ for (j = 0; j < tm->nitems; j++)
+ {
+ kv.key = ((u64) my_thread_index << 32) | (u64) j;
+ kv.value = ((u64) my_thread_index << 32) | (u64) j;
+ (void) __atomic_add_fetch (&tm->sequence_number, 1,
+ __ATOMIC_ACQUIRE);
+ BV (clib_bihash_add_del) (h, &kv, 0 /* is_add */ );
+ }
+ }
+
+ (void) __atomic_sub_fetch (&tm->threads_running, 1, __ATOMIC_ACQUIRE);
+ while (1)
+ {
+ struct timespec ts, tsrem;
+ ts.tv_sec = 1;
+ ts.tv_nsec = 0;
+
+ while (nanosleep (&ts, &tsrem) < 0)
+ ts = tsrem;
+ }
+ return (0); /* not so much */
+}
+
+static clib_error_t *
+test_bihash_threads (test_main_t * tm)
+{
+ int i;
+ pthread_t handle;
+ BVT (clib_bihash) * h;
+ int rv;
+
+ h = &tm->hash;
+
+#if BIHASH_32_64_SVM
+ BV (clib_bihash_master_init_svm) (h, "test", tm->nbuckets,
+ 0x30000000 /* base_addr */ ,
+ tm->hash_memory_size);
+#else
+ BV (clib_bihash_init) (h, "test", tm->nbuckets, tm->hash_memory_size);
+#endif
+
+ tm->thread_barrier = 1;
+
+ /* Start the worker threads */
+ for (i = 0; i < tm->nthreads; i++)
+ {
+ rv = pthread_create (&handle, NULL, test_bihash_thread_fn,
+ (void *) (u64) i);
+ if (rv)
+ {
+ clib_unix_warning ("pthread_create returned %d", rv);
+ }
+ }
+ tm->threads_running = i;
+ tm->sequence_number = 0;
+ CLIB_MEMORY_BARRIER ();
+
+ /* start the workers */
+ tm->thread_barrier = 0;
+
+ while (tm->threads_running)
+ {
+ struct timespec ts, tsrem;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 20 * 1000 * 1000; /* sleep for 20ms at a time */
+
+ while (nanosleep (&ts, &tsrem) < 0)
+ ts = tsrem;
+ }
+
+ return 0;
+}
+
+
static clib_error_t *
test_bihash (test_main_t * tm)
{
h = &tm->hash;
+#if BIHASH_32_64_SVM
+ BV (clib_bihash_master_init_svm) (h, "test", tm->nbuckets,
+ 0x30000000 /* base_addr */ ,
+ tm->hash_memory_size);
+#else
BV (clib_bihash_init) (h, "test", tm->nbuckets, tm->hash_memory_size);
+#endif
for (acycle = 0; acycle < tm->ncycles; acycle++)
{
{
for (i = 0; i < tm->nitems; i++)
{
+ /* Prefetch buckets 8 iterations ahead */
+ if (1 && (i < (tm->nitems - 8)))
+ {
+ BVT (clib_bihash_kv) pref_kv;
+ u64 pref_hash;
+ pref_kv.key = tm->keys[i + 8];
+ pref_hash = BV (clib_bihash_hash) (&pref_kv);
+ BV (clib_bihash_prefetch_bucket) (h, pref_hash);
+ }
+
kv.key = tm->keys[i];
if (BV (clib_bihash_search) (h, &kv, &kv) < 0)
if (BV (clib_bihash_search) (h, &kv, &kv) < 0)
total_searches = (uword) tm->search_iter * (uword) tm->nitems;
if (delta > 0)
- fformat (stdout, "%.f searches per second\n",
- ((f64) total_searches) / delta);
+ fformat (stdout,
+ "%.f searches per second, %.2f nsec per search\n",
+ ((f64) total_searches) / delta,
+ 1e9 * (delta / ((f64) total_searches)));
fformat (stdout, "%lld searches in %.6f seconds\n", total_searches,
delta);
{
for (j = 0; j < tm->nitems; j++)
{
+ /* Prefetch buckets 8 iterations ahead */
+ if (1 && (j < (tm->nitems - 8)))
+ {
+ BVT (clib_bihash_kv) pref_kv;
+ u64 pref_hash;
+ pref_kv.key = tm->keys[j + 8];
+ pref_hash = BV (clib_bihash_hash) (&pref_kv);
+ BV (clib_bihash_prefetch_bucket) (h, pref_hash);
+ }
+
kv.key = tm->keys[j];
rv = BV (clib_bihash_search) (h, &kv, &kv);
if (j <= i && rv >= 0)
fformat (stdout, "End of run, should be empty...\n");
fformat (stdout, "%U", BV (format_bihash), h, 0 /* very verbose */ );
- return 0;
-}
-
-clib_error_t *
-test_bihash_cache (test_main_t * tm)
-{
- u32 lru;
- BVT (clib_bihash_bucket) _b, *b = &_b;
-
- BV (clib_bihash_reset_cache) (b);
-
- fformat (stdout, "Initial LRU config: %U\n", BV (format_bihash_lru), b);
-
- BV (clib_bihash_update_lru_not_inline) (b, 3);
- fformat (stdout, "use slot 3, LRU config: %U\n", BV (format_bihash_lru), b);
-
- BV (clib_bihash_update_lru) (b, 1);
-
- fformat (stdout, "use slot 1 LRU config: %U\n", BV (format_bihash_lru), b);
-
- lru = BV (clib_bihash_get_lru) (b);
-
- fformat (stdout, "least-recently-used is %d\n", lru);
-
- BV (clib_bihash_update_lru) (b, 4);
-
- fformat (stdout, "use slot 4 LRU config: %U\n", BV (format_bihash_lru), b);
-
- lru = BV (clib_bihash_get_lru) (b);
-
- fformat (stdout, "least-recently-used is %d\n", lru);
+ BV (clib_bihash_free) (h);
return 0;
}
int which = 0;
tm->report_every_n = 1;
- tm->hash_memory_size = 4095ULL << 20;
+ tm->hash_memory_size = 1ULL << 30;
while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
{
;
else if (unformat (i, "vec64"))
which = 1;
- else if (unformat (i, "cache"))
+ else if (unformat (i, "threads %u", &tm->nthreads))
which = 2;
-
else if (unformat (i, "verbose"))
tm->verbose = 1;
+ else if (unformat (i, "stale-overwrite"))
+ which = 3;
else
return clib_error_return (0, "unknown input '%U'",
format_unformat_error, i);
break;
case 2:
- error = test_bihash_cache (tm);
+ error = test_bihash_threads (tm);
+ break;
+
+ case 3:
+ error = test_bihash_stale_overwrite (tm);
break;
default:
clib_mem_init (0, 4095ULL << 20);
+ tm->global_heap = clib_mem_get_per_cpu_heap ();
+
tm->input = &i;
tm->seed = 0xdeaddabe;
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