+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2015 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 <stdio.h>
-
-#include <rte_cycles.h>
-#include <rte_hash.h>
-#include <rte_hash_crc.h>
-#include <rte_spinlock.h>
-#include <rte_launch.h>
-
-#include "test.h"
-
-/*
- * Check condition and return an error if true. Assumes that "handle" is the
- * name of the hash structure pointer to be freed.
- */
-#define RETURN_IF_ERROR(cond, str, ...) do { \
- if (cond) { \
- printf("ERROR line %d: " str "\n", __LINE__, \
- ##__VA_ARGS__); \
- if (handle) \
- rte_hash_free(handle); \
- return -1; \
- } \
-} while (0)
-
-enum locking_mode_t {
- NORMAL_LOCK,
- LOCK_ELISION,
- NULL_LOCK
-};
-
-struct {
- uint32_t num_iterations;
- struct rte_hash *h;
- rte_spinlock_t *lock;
- int locking_mode;
-} tbl_scaling_test_params;
-
-static rte_atomic64_t gcycles;
-
-static int test_hash_scaling_worker(__attribute__((unused)) void *arg)
-{
- uint64_t i, key;
- uint32_t thr_id = rte_sys_gettid();
- uint64_t begin, cycles = 0;
-
- switch (tbl_scaling_test_params.locking_mode) {
-
- case NORMAL_LOCK:
-
- for (i = 0; i < tbl_scaling_test_params.num_iterations; i++) {
- /* different threads get different keys because
- we use the thread-id in the key computation
- */
- key = rte_hash_crc(&i, sizeof(i), thr_id);
- begin = rte_rdtsc_precise();
- rte_spinlock_lock(tbl_scaling_test_params.lock);
- rte_hash_add_key(tbl_scaling_test_params.h, &key);
- rte_spinlock_unlock(tbl_scaling_test_params.lock);
- cycles += rte_rdtsc_precise() - begin;
- }
- break;
-
- case LOCK_ELISION:
-
- for (i = 0; i < tbl_scaling_test_params.num_iterations; i++) {
- key = rte_hash_crc(&i, sizeof(i), thr_id);
- begin = rte_rdtsc_precise();
- rte_spinlock_lock_tm(tbl_scaling_test_params.lock);
- rte_hash_add_key(tbl_scaling_test_params.h, &key);
- rte_spinlock_unlock_tm(tbl_scaling_test_params.lock);
- cycles += rte_rdtsc_precise() - begin;
- }
- break;
-
- default:
-
- for (i = 0; i < tbl_scaling_test_params.num_iterations; i++) {
- key = rte_hash_crc(&i, sizeof(i), thr_id);
- begin = rte_rdtsc_precise();
- rte_hash_add_key(tbl_scaling_test_params.h, &key);
- cycles += rte_rdtsc_precise() - begin;
- }
- }
-
- rte_atomic64_add(&gcycles, cycles);
-
- return 0;
-}
-
-/*
- * Do scalability perf tests.
- */
-static int
-test_hash_scaling(int locking_mode)
-{
- static unsigned calledCount = 1;
- uint32_t num_iterations = 1024*1024;
- uint64_t i, key;
- struct rte_hash_parameters hash_params = {
- .entries = num_iterations*2,
- .key_len = sizeof(key),
- .hash_func = rte_hash_crc,
- .hash_func_init_val = 0,
- .socket_id = rte_socket_id(),
- .extra_flag = RTE_HASH_EXTRA_FLAGS_TRANS_MEM_SUPPORT
- };
- struct rte_hash *handle;
- char name[RTE_HASH_NAMESIZE];
- rte_spinlock_t lock;
-
- rte_spinlock_init(&lock);
-
- snprintf(name, 32, "test%u", calledCount++);
- hash_params.name = name;
-
- handle = rte_hash_create(&hash_params);
- RETURN_IF_ERROR(handle == NULL, "hash creation failed");
-
- tbl_scaling_test_params.num_iterations =
- num_iterations/rte_lcore_count();
- tbl_scaling_test_params.h = handle;
- tbl_scaling_test_params.lock = &lock;
- tbl_scaling_test_params.locking_mode = locking_mode;
-
- rte_atomic64_init(&gcycles);
- rte_atomic64_clear(&gcycles);
-
- /* fill up to initial size */
- for (i = 0; i < num_iterations; i++) {
- key = rte_hash_crc(&i, sizeof(i), 0xabcdabcd);
- rte_hash_add_key(tbl_scaling_test_params.h, &key);
- }
-
- rte_eal_mp_remote_launch(test_hash_scaling_worker, NULL, CALL_MASTER);
- rte_eal_mp_wait_lcore();
-
- unsigned long long int cycles_per_operation =
- rte_atomic64_read(&gcycles)/
- (tbl_scaling_test_params.num_iterations*rte_lcore_count());
- const char *lock_name;
-
- switch (locking_mode) {
- case NORMAL_LOCK:
- lock_name = "normal spinlock";
- break;
- case LOCK_ELISION:
- lock_name = "lock elision";
- break;
- default:
- lock_name = "null lock";
- }
- printf("--------------------------------------------------------\n");
- printf("Cores: %d; %s mode -> cycles per operation: %llu\n",
- rte_lcore_count(), lock_name, cycles_per_operation);
- printf("--------------------------------------------------------\n");
- /* CSV output */
- printf(">>>%d,%s,%llu\n", rte_lcore_count(), lock_name,
- cycles_per_operation);
-
- rte_hash_free(handle);
- return 0;
-}
-
-static int
-test_hash_scaling_main(void)
-{
- int r = 0;
-
- if (rte_lcore_count() == 1)
- r = test_hash_scaling(NULL_LOCK);
-
- if (r == 0)
- r = test_hash_scaling(NORMAL_LOCK);
-
- if (!rte_tm_supported()) {
- printf("Hardware transactional memory (lock elision) is NOT supported\n");
- return r;
- }
- printf("Hardware transactional memory (lock elision) is supported\n");
-
- if (r == 0)
- r = test_hash_scaling(LOCK_ELISION);
-
- return r;
-}
-
-REGISTER_TEST_COMMAND(hash_scaling_autotest, test_hash_scaling_main);
git.droids-corp.org / dpdk.git / blobdiff