1 files changed, 336 insertions, 0 deletions
diff --git a/app/test/test_mempool_perf.c b/app/test/test_mempool_perf.c
new file mode 100644
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+++ b/app/test/test_mempool_perf.c
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+/*-
+ *   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_ring.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
+ *
+ *    - 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)
+
+static struct rte_mempool *mp;
+static struct rte_mempool *mp_cache, *mp_nocache;
+
+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 {
+	unsigned 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(__attribute__((unused)) void *arg)
+{
+	void *obj_table[MAX_KEEP];
+	unsigned i, idx;
+	unsigned lcore_id = rte_lcore_id();
+	int ret;
+	uint64_t start_cycles, end_cycles;
+	uint64_t time_diff = 0, hz = rte_get_timer_hz();
+
+	/* n_get_bulk and n_put_bulk must be divisors of n_keep */
+	if (((n_keep / n_get_bulk) * n_get_bulk) != n_keep)
+		return -1;
+	if (((n_keep / n_put_bulk) * n_put_bulk) != n_keep)
+		return -1;
+
+	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_get_bulk(mp, &obj_table[idx],
+							   n_get_bulk);
+				if (unlikely(ret < 0)) {
+					rte_mempool_dump(stdout, mp);
+					rte_ring_dump(stdout, mp->ring);
+					/* in this case, objects are lost... */
+					return -1;
+				}
+				idx += n_get_bulk;
+			}
+
+			/* put the objects back */
+			idx = 0;
+			while (idx < n_keep) {
+				rte_mempool_put_bulk(mp, &obj_table[idx],
+						     n_put_bulk);
+				idx += n_put_bulk;
+			}
+		}
+		end_cycles = rte_get_timer_cycles();
+		time_diff = end_cycles - start_cycles;
+		stats[lcore_id].enq_count += N;
+	}
+
+	return 0;
+}
+
+/* launch all the per-lcore test, and display the result */
+static int
+launch_cores(unsigned cores)
+{
+	unsigned lcore_id;
+	unsigned 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 ",
+	       (unsigned) mp->cache_size, cores, n_get_bulk, n_put_bulk, n_keep);
+
+	if (rte_mempool_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,
+				      NULL, lcore_id);
+	}
+
+	/* start synchro and launch test on master */
+	rte_atomic32_set(&synchro, 1);
+
+	ret = per_lcore_mempool_test(NULL);
+
+	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=%u\n", rate);
+
+	return 0;
+}
+
+/* for a given number of core, launch all test cases */
+static int
+do_one_mempool_test(unsigned 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(cores);
+
+				if (ret < 0)
+					return -1;
+			}
+		}
+	}
+	return 0;
+}
+
+static int
+test_mempool_perf(void)
+{
+	rte_atomic32_init(&synchro);
+
+	/* create a mempool (without cache) */
+	if (mp_nocache == NULL)
+		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)
+		return -1;
+
+	/* create a mempool (with cache) */
+	if (mp_cache == NULL)
+		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)
+		return -1;
+
+	/* performance test with 1, 2 and max cores */
+	printf("start performance test (without cache)\n");
+	mp = mp_nocache;
+
+	if (do_one_mempool_test(1) < 0)
+		return -1;
+
+	if (do_one_mempool_test(2) < 0)
+		return -1;
+
+	if (do_one_mempool_test(rte_lcore_count()) < 0)
+		return -1;
+
+	/* performance test with 1, 2 and max cores */
+	printf("start performance test (with cache)\n");
+	mp = mp_cache;
+
+	if (do_one_mempool_test(1) < 0)
+		return -1;
+
+	if (do_one_mempool_test(2) < 0)
+		return -1;
+
+	if (do_one_mempool_test(rte_lcore_count()) < 0)
+		return -1;
+
+	rte_mempool_list_dump(stdout);
+
+	return 0;
+}
+
+static struct test_command mempool_perf_cmd = {
+	.command = "mempool_perf_autotest",
+	.callback = test_mempool_perf,
+};
+REGISTER_TEST_COMMAND(mempool_perf_cmd);