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1/*-
2 * BSD LICENSE
3 *
4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <string.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <stdint.h>
38#include <inttypes.h>
39#include <stdarg.h>
40#include <errno.h>
41#include <sys/queue.h>
42
43#include <rte_common.h>
44#include <rte_log.h>
45#include <rte_debug.h>
46#include <rte_memory.h>
47#include <rte_memzone.h>
48#include <rte_launch.h>
49#include <rte_cycles.h>
50#include <rte_eal.h>
51#include <rte_per_lcore.h>
52#include <rte_lcore.h>
53#include <rte_atomic.h>
54#include <rte_branch_prediction.h>
55#include <rte_mempool.h>
56#include <rte_spinlock.h>
57#include <rte_malloc.h>
58
59#include "test.h"
60
61/*
62 * Mempool performance
63 * =======
64 *
65 * Each core get *n_keep* objects per bulk of *n_get_bulk*. Then,
66 * objects are put back in the pool per bulk of *n_put_bulk*.
67 *
68 * This sequence is done during TIME_S seconds.
69 *
70 * This test is done on the following configurations:
71 *
72 * - Cores configuration (*cores*)
73 *
74 * - One core with cache
75 * - Two cores with cache
76 * - Max. cores with cache
77 * - One core without cache
78 * - Two cores without cache
79 * - Max. cores without cache
80 * - One core with user-owned cache
81 * - Two cores with user-owned cache
82 * - Max. cores with user-owned cache
83 *
84 * - Bulk size (*n_get_bulk*, *n_put_bulk*)
85 *
86 * - Bulk get from 1 to 32
87 * - Bulk put from 1 to 32
88 *
89 * - Number of kept objects (*n_keep*)
90 *
91 * - 32
92 * - 128
93 */
94
95#define N 65536
96#define TIME_S 5
97#define MEMPOOL_ELT_SIZE 2048
98#define MAX_KEEP 128
99#define MEMPOOL_SIZE ((rte_lcore_count()*(MAX_KEEP+RTE_MEMPOOL_CACHE_MAX_SIZE))-1)
100
101#define LOG_ERR() printf("test failed at %s():%d\n", __func__, __LINE__)
102#define RET_ERR() do { \
103 LOG_ERR(); \
104 return -1; \
105 } while (0)
106#define GOTO_ERR(var, label) do { \
107 LOG_ERR(); \
108 var = -1; \
109 goto label; \
110 } while (0)
111
112static struct rte_mempool *mp;
113static struct rte_mempool *mp_cache, *mp_nocache;
114static int use_external_cache;
115static unsigned external_cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE;
116
117static rte_atomic32_t synchro;
118
119/* number of objects in one bulk operation (get or put) */
120static unsigned n_get_bulk;
121static unsigned n_put_bulk;
122
123/* number of objects retrived from mempool before putting them back */
124static unsigned n_keep;
125
126/* number of enqueues / dequeues */
127struct mempool_test_stats {
128 uint64_t enq_count;
129} __rte_cache_aligned;
130
131static struct mempool_test_stats stats[RTE_MAX_LCORE];
132
133/*
134 * save the object number in the first 4 bytes of object data. All
135 * other bytes are set to 0.
136 */
137static void
138my_obj_init(struct rte_mempool *mp, __attribute__((unused)) void *arg,
139 void *obj, unsigned i)
140{
141 uint32_t *objnum = obj;
142 memset(obj, 0, mp->elt_size);
143 *objnum = i;
144}
145
146static int
147per_lcore_mempool_test(__attribute__((unused)) void *arg)
148{
149 void *obj_table[MAX_KEEP];
150 unsigned i, idx;
151 unsigned lcore_id = rte_lcore_id();
152 int ret = 0;
153 uint64_t start_cycles, end_cycles;
154 uint64_t time_diff = 0, hz = rte_get_timer_hz();
155 struct rte_mempool_cache *cache;
156
157 if (use_external_cache) {
158 /* Create a user-owned mempool cache. */
159 cache = rte_mempool_cache_create(external_cache_size,
160 SOCKET_ID_ANY);
161 if (cache == NULL)
162 RET_ERR();
163 } else {
164 /* May be NULL if cache is disabled. */
165 cache = rte_mempool_default_cache(mp, lcore_id);
166 }
167
168 /* n_get_bulk and n_put_bulk must be divisors of n_keep */
169 if (((n_keep / n_get_bulk) * n_get_bulk) != n_keep)
170 GOTO_ERR(ret, out);
171 if (((n_keep / n_put_bulk) * n_put_bulk) != n_keep)
172 GOTO_ERR(ret, out);
173
174 stats[lcore_id].enq_count = 0;
175
176 /* wait synchro for slaves */
177 if (lcore_id != rte_get_master_lcore())
178 while (rte_atomic32_read(&synchro) == 0);
179
180 start_cycles = rte_get_timer_cycles();
181
182 while (time_diff/hz < TIME_S) {
183 for (i = 0; likely(i < (N/n_keep)); i++) {
184 /* get n_keep objects by bulk of n_bulk */
185 idx = 0;
186 while (idx < n_keep) {
187 ret = rte_mempool_generic_get(mp,
188 &obj_table[idx],
189 n_get_bulk,
190 cache, 0);
191 if (unlikely(ret < 0)) {
192 rte_mempool_dump(stdout, mp);
193 /* in this case, objects are lost... */
194 GOTO_ERR(ret, out);
195 }
196 idx += n_get_bulk;
197 }
198
199 /* put the objects back */
200 idx = 0;
201 while (idx < n_keep) {
202 rte_mempool_generic_put(mp, &obj_table[idx],
203 n_put_bulk,
204 cache, 0);
205 idx += n_put_bulk;
206 }
207 }
208 end_cycles = rte_get_timer_cycles();
209 time_diff = end_cycles - start_cycles;
210 stats[lcore_id].enq_count += N;
211 }
212
213out:
214 if (use_external_cache) {
215 rte_mempool_cache_flush(cache, mp);
216 rte_mempool_cache_free(cache);
217 }
218
219 return ret;
220}
221
222/* launch all the per-lcore test, and display the result */
223static int
224launch_cores(unsigned cores)
225{
226 unsigned lcore_id;
227 uint64_t rate;
228 int ret;
229 unsigned cores_save = cores;
230
231 rte_atomic32_set(&synchro, 0);
232
233 /* reset stats */
234 memset(stats, 0, sizeof(stats));
235
236 printf("mempool_autotest cache=%u cores=%u n_get_bulk=%u "
237 "n_put_bulk=%u n_keep=%u ",
238 use_external_cache ?
239 external_cache_size : (unsigned) mp->cache_size,
240 cores, n_get_bulk, n_put_bulk, n_keep);
241
242 if (rte_mempool_avail_count(mp) != MEMPOOL_SIZE) {
243 printf("mempool is not full\n");
244 return -1;
245 }
246
247 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
248 if (cores == 1)
249 break;
250 cores--;
251 rte_eal_remote_launch(per_lcore_mempool_test,
252 NULL, lcore_id);
253 }
254
255 /* start synchro and launch test on master */
256 rte_atomic32_set(&synchro, 1);
257
258 ret = per_lcore_mempool_test(NULL);
259
260 cores = cores_save;
261 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
262 if (cores == 1)
263 break;
264 cores--;
265 if (rte_eal_wait_lcore(lcore_id) < 0)
266 ret = -1;
267 }
268
269 if (ret < 0) {
270 printf("per-lcore test returned -1\n");
271 return -1;
272 }
273
274 rate = 0;
275 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
276 rate += (stats[lcore_id].enq_count / TIME_S);
277
278 printf("rate_persec=%" PRIu64 "\n", rate);
279
280 return 0;
281}
282
283/* for a given number of core, launch all test cases */
284static int
285do_one_mempool_test(unsigned cores)
286{
287 unsigned bulk_tab_get[] = { 1, 4, 32, 0 };
288 unsigned bulk_tab_put[] = { 1, 4, 32, 0 };
289 unsigned keep_tab[] = { 32, 128, 0 };
290 unsigned *get_bulk_ptr;
291 unsigned *put_bulk_ptr;
292 unsigned *keep_ptr;
293 int ret;
294
295 for (get_bulk_ptr = bulk_tab_get; *get_bulk_ptr; get_bulk_ptr++) {
296 for (put_bulk_ptr = bulk_tab_put; *put_bulk_ptr; put_bulk_ptr++) {
297 for (keep_ptr = keep_tab; *keep_ptr; keep_ptr++) {
298
299 n_get_bulk = *get_bulk_ptr;
300 n_put_bulk = *put_bulk_ptr;
301 n_keep = *keep_ptr;
302 ret = launch_cores(cores);
303
304 if (ret < 0)
305 return -1;
306 }
307 }
308 }
309 return 0;
310}
311
312static int
313test_mempool_perf(void)
314{
315 rte_atomic32_init(&synchro);
316
317 /* create a mempool (without cache) */
318 if (mp_nocache == NULL)
319 mp_nocache = rte_mempool_create("perf_test_nocache", MEMPOOL_SIZE,
320 MEMPOOL_ELT_SIZE, 0, 0,
321 NULL, NULL,
322 my_obj_init, NULL,
323 SOCKET_ID_ANY, 0);
324 if (mp_nocache == NULL)
325 return -1;
326
327 /* create a mempool (with cache) */
328 if (mp_cache == NULL)
329 mp_cache = rte_mempool_create("perf_test_cache", MEMPOOL_SIZE,
330 MEMPOOL_ELT_SIZE,
331 RTE_MEMPOOL_CACHE_MAX_SIZE, 0,
332 NULL, NULL,
333 my_obj_init, NULL,
334 SOCKET_ID_ANY, 0);
335 if (mp_cache == NULL)
336 return -1;
337
338 /* performance test with 1, 2 and max cores */
339 printf("start performance test (without cache)\n");
340 mp = mp_nocache;
341
342 if (do_one_mempool_test(1) < 0)
343 return -1;
344
345 if (do_one_mempool_test(2) < 0)
346 return -1;
347
348 if (do_one_mempool_test(rte_lcore_count()) < 0)
349 return -1;
350
351 /* performance test with 1, 2 and max cores */
352 printf("start performance test (with cache)\n");
353 mp = mp_cache;
354
355 if (do_one_mempool_test(1) < 0)
356 return -1;
357
358 if (do_one_mempool_test(2) < 0)
359 return -1;
360
361 if (do_one_mempool_test(rte_lcore_count()) < 0)
362 return -1;
363
364 /* performance test with 1, 2 and max cores */
365 printf("start performance test (with user-owned cache)\n");
366 mp = mp_nocache;
367 use_external_cache = 1;
368
369 if (do_one_mempool_test(1) < 0)
370 return -1;
371
372 if (do_one_mempool_test(2) < 0)
373 return -1;
374
375 if (do_one_mempool_test(rte_lcore_count()) < 0)
376 return -1;
377
378 rte_mempool_list_dump(stdout);
379
380 return 0;
381}
382
383REGISTER_TEST_COMMAND(mempool_perf_autotest, test_mempool_perf);