--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_launch.h>
+#include <rte_cycles.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_mempool.h>
+#include <rte_spinlock.h>
+#include <rte_malloc.h>
+
+#include "test.h"
+
+/*
+ * Mempool performance
+ * =======
+ *
+ * Each core get *n_keep* objects per bulk of *n_get_bulk*. Then,
+ * objects are put back in the pool per bulk of *n_put_bulk*.
+ *
+ * This sequence is done during TIME_S seconds.
+ *
+ * This test is done on the following configurations:
+ *
+ * - Cores configuration (*cores*)
+ *
+ * - One core with cache
+ * - Two cores with cache
+ * - Max. cores with cache
+ * - One core without cache
+ * - Two cores without cache
+ * - Max. cores without cache
+ * - One core with user-owned cache
+ * - Two cores with user-owned cache
+ * - Max. cores with user-owned cache
+ *
+ * - Bulk size (*n_get_bulk*, *n_put_bulk*)
+ *
+ * - Bulk get from 1 to 32
+ * - Bulk put from 1 to 32
+ *
+ * - Number of kept objects (*n_keep*)
+ *
+ * - 32
+ * - 128
+ */
+
+#define N 65536
+#define TIME_S 5
+#define MEMPOOL_ELT_SIZE 2048
+#define MAX_KEEP 128
+#define MEMPOOL_SIZE ((rte_lcore_count()*(MAX_KEEP+RTE_MEMPOOL_CACHE_MAX_SIZE))-1)
+
+#define LOG_ERR() printf("test failed at %s():%d\n", __func__, __LINE__)
+#define RET_ERR() do { \
+ LOG_ERR(); \
+ return -1; \
+ } while (0)
+#define GOTO_ERR(var, label) do { \
+ LOG_ERR(); \
+ var = -1; \
+ goto label; \
+ } while (0)
+
+static int use_external_cache;
+static unsigned external_cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE;
+
+static rte_atomic32_t synchro;
+
+/* number of objects in one bulk operation (get or put) */
+static unsigned n_get_bulk;
+static unsigned n_put_bulk;
+
+/* number of objects retrived from mempool before putting them back */
+static unsigned n_keep;
+
+/* number of enqueues / dequeues */
+struct mempool_test_stats {
+ uint64_t enq_count;
+} __rte_cache_aligned;
+
+static struct mempool_test_stats stats[RTE_MAX_LCORE];
+
+/*
+ * save the object number in the first 4 bytes of object data. All
+ * other bytes are set to 0.
+ */
+static void
+my_obj_init(struct rte_mempool *mp, __attribute__((unused)) void *arg,
+ void *obj, unsigned i)
+{
+ uint32_t *objnum = obj;
+ memset(obj, 0, mp->elt_size);
+ *objnum = i;
+}
+
+static int
+per_lcore_mempool_test(void *arg)
+{
+ void *obj_table[MAX_KEEP];
+ unsigned i, idx;
+ struct rte_mempool *mp = arg;
+ unsigned lcore_id = rte_lcore_id();
+ int ret = 0;
+ uint64_t start_cycles, end_cycles;
+ uint64_t time_diff = 0, hz = rte_get_timer_hz();
+ struct rte_mempool_cache *cache;
+
+ if (use_external_cache) {
+ /* Create a user-owned mempool cache. */
+ cache = rte_mempool_cache_create(external_cache_size,
+ SOCKET_ID_ANY);
+ if (cache == NULL)
+ RET_ERR();
+ } else {
+ /* May be NULL if cache is disabled. */
+ cache = rte_mempool_default_cache(mp, lcore_id);
+ }
+
+ /* n_get_bulk and n_put_bulk must be divisors of n_keep */
+ if (((n_keep / n_get_bulk) * n_get_bulk) != n_keep)
+ GOTO_ERR(ret, out);
+ if (((n_keep / n_put_bulk) * n_put_bulk) != n_keep)
+ GOTO_ERR(ret, out);
+
+ stats[lcore_id].enq_count = 0;
+
+ /* wait synchro for slaves */
+ if (lcore_id != rte_get_master_lcore())
+ while (rte_atomic32_read(&synchro) == 0);
+
+ start_cycles = rte_get_timer_cycles();
+
+ while (time_diff/hz < TIME_S) {
+ for (i = 0; likely(i < (N/n_keep)); i++) {
+ /* get n_keep objects by bulk of n_bulk */
+ idx = 0;
+ while (idx < n_keep) {
+ ret = rte_mempool_generic_get(mp,
+ &obj_table[idx],
+ n_get_bulk,
+ cache, 0);
+ if (unlikely(ret < 0)) {
+ rte_mempool_dump(stdout, mp);
+ /* in this case, objects are lost... */
+ GOTO_ERR(ret, out);
+ }
+ idx += n_get_bulk;
+ }
+
+ /* put the objects back */
+ idx = 0;
+ while (idx < n_keep) {
+ rte_mempool_generic_put(mp, &obj_table[idx],
+ n_put_bulk,
+ cache, 0);
+ idx += n_put_bulk;
+ }
+ }
+ end_cycles = rte_get_timer_cycles();
+ time_diff = end_cycles - start_cycles;
+ stats[lcore_id].enq_count += N;
+ }
+
+out:
+ if (use_external_cache) {
+ rte_mempool_cache_flush(cache, mp);
+ rte_mempool_cache_free(cache);
+ }
+
+ return ret;
+}
+
+/* launch all the per-lcore test, and display the result */
+static int
+launch_cores(struct rte_mempool *mp, unsigned int cores)
+{
+ unsigned lcore_id;
+ uint64_t rate;
+ int ret;
+ unsigned cores_save = cores;
+
+ rte_atomic32_set(&synchro, 0);
+
+ /* reset stats */
+ memset(stats, 0, sizeof(stats));
+
+ printf("mempool_autotest cache=%u cores=%u n_get_bulk=%u "
+ "n_put_bulk=%u n_keep=%u ",
+ use_external_cache ?
+ external_cache_size : (unsigned) mp->cache_size,
+ cores, n_get_bulk, n_put_bulk, n_keep);
+
+ if (rte_mempool_avail_count(mp) != MEMPOOL_SIZE) {
+ printf("mempool is not full\n");
+ return -1;
+ }
+
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (cores == 1)
+ break;
+ cores--;
+ rte_eal_remote_launch(per_lcore_mempool_test,
+ mp, lcore_id);
+ }
+
+ /* start synchro and launch test on master */
+ rte_atomic32_set(&synchro, 1);
+
+ ret = per_lcore_mempool_test(mp);
+
+ cores = cores_save;
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (cores == 1)
+ break;
+ cores--;
+ if (rte_eal_wait_lcore(lcore_id) < 0)
+ ret = -1;
+ }
+
+ if (ret < 0) {
+ printf("per-lcore test returned -1\n");
+ return -1;
+ }
+
+ rate = 0;
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
+ rate += (stats[lcore_id].enq_count / TIME_S);
+
+ printf("rate_persec=%" PRIu64 "\n", rate);
+
+ return 0;
+}
+
+/* for a given number of core, launch all test cases */
+static int
+do_one_mempool_test(struct rte_mempool *mp, unsigned int cores)
+{
+ unsigned bulk_tab_get[] = { 1, 4, 32, 0 };
+ unsigned bulk_tab_put[] = { 1, 4, 32, 0 };
+ unsigned keep_tab[] = { 32, 128, 0 };
+ unsigned *get_bulk_ptr;
+ unsigned *put_bulk_ptr;
+ unsigned *keep_ptr;
+ int ret;
+
+ for (get_bulk_ptr = bulk_tab_get; *get_bulk_ptr; get_bulk_ptr++) {
+ for (put_bulk_ptr = bulk_tab_put; *put_bulk_ptr; put_bulk_ptr++) {
+ for (keep_ptr = keep_tab; *keep_ptr; keep_ptr++) {
+
+ n_get_bulk = *get_bulk_ptr;
+ n_put_bulk = *put_bulk_ptr;
+ n_keep = *keep_ptr;
+ ret = launch_cores(mp, cores);
+
+ if (ret < 0)
+ return -1;
+ }
+ }
+ }
+ return 0;
+}
+
+static int
+test_mempool_perf(void)
+{
+ struct rte_mempool *mp_cache = NULL;
+ struct rte_mempool *mp_nocache = NULL;
+ struct rte_mempool *default_pool = NULL;
+ int ret = -1;
+
+ rte_atomic32_init(&synchro);
+
+ /* create a mempool (without cache) */
+ mp_nocache = rte_mempool_create("perf_test_nocache", MEMPOOL_SIZE,
+ MEMPOOL_ELT_SIZE, 0, 0,
+ NULL, NULL,
+ my_obj_init, NULL,
+ SOCKET_ID_ANY, 0);
+ if (mp_nocache == NULL)
+ goto err;
+
+ /* create a mempool (with cache) */
+ mp_cache = rte_mempool_create("perf_test_cache", MEMPOOL_SIZE,
+ MEMPOOL_ELT_SIZE,
+ RTE_MEMPOOL_CACHE_MAX_SIZE, 0,
+ NULL, NULL,
+ my_obj_init, NULL,
+ SOCKET_ID_ANY, 0);
+ if (mp_cache == NULL)
+ goto err;
+
+ /* Create a mempool based on Default handler */
+ default_pool = rte_mempool_create_empty("default_pool",
+ MEMPOOL_SIZE,
+ MEMPOOL_ELT_SIZE,
+ 0, 0,
+ SOCKET_ID_ANY, 0);
+
+ if (default_pool == NULL) {
+ printf("cannot allocate %s mempool\n",
+ RTE_MBUF_DEFAULT_MEMPOOL_OPS);
+ goto err;
+ }
+
+ if (rte_mempool_set_ops_byname(default_pool,
+ RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL)
+ < 0) {
+ printf("cannot set %s handler\n", RTE_MBUF_DEFAULT_MEMPOOL_OPS);
+ goto err;
+ }
+
+ if (rte_mempool_populate_default(default_pool) < 0) {
+ printf("cannot populate %s mempool\n",
+ RTE_MBUF_DEFAULT_MEMPOOL_OPS);
+ goto err;
+ }
+
+ rte_mempool_obj_iter(default_pool, my_obj_init, NULL);
+
+ /* performance test with 1, 2 and max cores */
+ printf("start performance test (without cache)\n");
+
+ if (do_one_mempool_test(mp_nocache, 1) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_nocache, 2) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_nocache, rte_lcore_count()) < 0)
+ goto err;
+
+ /* performance test with 1, 2 and max cores */
+ printf("start performance test for %s (without cache)\n",
+ RTE_MBUF_DEFAULT_MEMPOOL_OPS);
+
+ if (do_one_mempool_test(default_pool, 1) < 0)
+ goto err;
+
+ if (do_one_mempool_test(default_pool, 2) < 0)
+ goto err;
+
+ if (do_one_mempool_test(default_pool, rte_lcore_count()) < 0)
+ goto err;
+
+ /* performance test with 1, 2 and max cores */
+ printf("start performance test (with cache)\n");
+
+ if (do_one_mempool_test(mp_cache, 1) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_cache, 2) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_cache, rte_lcore_count()) < 0)
+ goto err;
+
+ /* performance test with 1, 2 and max cores */
+ printf("start performance test (with user-owned cache)\n");
+ use_external_cache = 1;
+
+ if (do_one_mempool_test(mp_nocache, 1) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_nocache, 2) < 0)
+ goto err;
+
+ if (do_one_mempool_test(mp_nocache, rte_lcore_count()) < 0)
+ goto err;
+
+ rte_mempool_list_dump(stdout);
+
+ ret = 0;
+
+err:
+ rte_mempool_free(mp_cache);
+ rte_mempool_free(mp_nocache);
+ rte_mempool_free(default_pool);
+ return ret;
+}
+
+REGISTER_TEST_COMMAND(mempool_perf_autotest, test_mempool_perf);
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