+++ /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 <stdint.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include <rte_common.h>
-#include <rte_cycles.h>
-#include <rte_random.h>
-#include <rte_malloc.h>
-
-#include <rte_memcpy.h>
-
-#include "test.h"
-
-/*
- * Set this to the maximum buffer size you want to test. If it is 0, then the
- * values in the buf_sizes[] array below will be used.
- */
-#define TEST_VALUE_RANGE 0
-
-/* List of buffer sizes to test */
-#if TEST_VALUE_RANGE == 0
-static size_t buf_sizes[] = {
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15, 16, 17, 31, 32, 33, 63, 64, 65, 127, 128,
- 129, 191, 192, 193, 255, 256, 257, 319, 320, 321, 383, 384, 385, 447, 448,
- 449, 511, 512, 513, 767, 768, 769, 1023, 1024, 1025, 1518, 1522, 1536, 1600,
- 2048, 2560, 3072, 3584, 4096, 4608, 5120, 5632, 6144, 6656, 7168, 7680, 8192
-};
-/* MUST be as large as largest packet size above */
-#define SMALL_BUFFER_SIZE 8192
-#else /* TEST_VALUE_RANGE != 0 */
-static size_t buf_sizes[TEST_VALUE_RANGE];
-#define SMALL_BUFFER_SIZE TEST_VALUE_RANGE
-#endif /* TEST_VALUE_RANGE == 0 */
-
-
-/*
- * Arrays of this size are used for measuring uncached memory accesses by
- * picking a random location within the buffer. Make this smaller if there are
- * memory allocation errors.
- */
-#define LARGE_BUFFER_SIZE (100 * 1024 * 1024)
-
-/* How many times to run timing loop for performance tests */
-#define TEST_ITERATIONS 1000000
-#define TEST_BATCH_SIZE 100
-
-/* Data is aligned on this many bytes (power of 2) */
-#ifdef RTE_MACHINE_CPUFLAG_AVX512F
-#define ALIGNMENT_UNIT 64
-#elif defined RTE_MACHINE_CPUFLAG_AVX2
-#define ALIGNMENT_UNIT 32
-#else /* RTE_MACHINE_CPUFLAG */
-#define ALIGNMENT_UNIT 16
-#endif /* RTE_MACHINE_CPUFLAG */
-
-/*
- * Pointers used in performance tests. The two large buffers are for uncached
- * access where random addresses within the buffer are used for each
- * memcpy. The two small buffers are for cached access.
- */
-static uint8_t *large_buf_read, *large_buf_write;
-static uint8_t *small_buf_read, *small_buf_write;
-
-/* Initialise data buffers. */
-static int
-init_buffers(void)
-{
- unsigned i;
-
- large_buf_read = rte_malloc("memcpy", LARGE_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
- if (large_buf_read == NULL)
- goto error_large_buf_read;
-
- large_buf_write = rte_malloc("memcpy", LARGE_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
- if (large_buf_write == NULL)
- goto error_large_buf_write;
-
- small_buf_read = rte_malloc("memcpy", SMALL_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
- if (small_buf_read == NULL)
- goto error_small_buf_read;
-
- small_buf_write = rte_malloc("memcpy", SMALL_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
- if (small_buf_write == NULL)
- goto error_small_buf_write;
-
- for (i = 0; i < LARGE_BUFFER_SIZE; i++)
- large_buf_read[i] = rte_rand();
- for (i = 0; i < SMALL_BUFFER_SIZE; i++)
- small_buf_read[i] = rte_rand();
-
- return 0;
-
-error_small_buf_write:
- rte_free(small_buf_read);
-error_small_buf_read:
- rte_free(large_buf_write);
-error_large_buf_write:
- rte_free(large_buf_read);
-error_large_buf_read:
- printf("ERROR: not enough memory\n");
- return -1;
-}
-
-/* Cleanup data buffers */
-static void
-free_buffers(void)
-{
- rte_free(large_buf_read);
- rte_free(large_buf_write);
- rte_free(small_buf_read);
- rte_free(small_buf_write);
-}
-
-/*
- * Get a random offset into large array, with enough space needed to perform
- * max copy size. Offset is aligned, uoffset is used for unalignment setting.
- */
-static inline size_t
-get_rand_offset(size_t uoffset)
-{
- return ((rte_rand() % (LARGE_BUFFER_SIZE - SMALL_BUFFER_SIZE)) &
- ~(ALIGNMENT_UNIT - 1)) + uoffset;
-}
-
-/* Fill in source and destination addresses. */
-static inline void
-fill_addr_arrays(size_t *dst_addr, int is_dst_cached, size_t dst_uoffset,
- size_t *src_addr, int is_src_cached, size_t src_uoffset)
-{
- unsigned int i;
-
- for (i = 0; i < TEST_BATCH_SIZE; i++) {
- dst_addr[i] = (is_dst_cached) ? dst_uoffset : get_rand_offset(dst_uoffset);
- src_addr[i] = (is_src_cached) ? src_uoffset : get_rand_offset(src_uoffset);
- }
-}
-
-/*
- * WORKAROUND: For some reason the first test doing an uncached write
- * takes a very long time (~25 times longer than is expected). So we do
- * it once without timing.
- */
-static void
-do_uncached_write(uint8_t *dst, int is_dst_cached,
- const uint8_t *src, int is_src_cached, size_t size)
-{
- unsigned i, j;
- size_t dst_addrs[TEST_BATCH_SIZE], src_addrs[TEST_BATCH_SIZE];
-
- for (i = 0; i < (TEST_ITERATIONS / TEST_BATCH_SIZE); i++) {
- fill_addr_arrays(dst_addrs, is_dst_cached, 0,
- src_addrs, is_src_cached, 0);
- for (j = 0; j < TEST_BATCH_SIZE; j++) {
- rte_memcpy(dst+dst_addrs[j], src+src_addrs[j], size);
- }
- }
-}
-
-/*
- * Run a single memcpy performance test. This is a macro to ensure that if
- * the "size" parameter is a constant it won't be converted to a variable.
- */
-#define SINGLE_PERF_TEST(dst, is_dst_cached, dst_uoffset, \
- src, is_src_cached, src_uoffset, size) \
-do { \
- unsigned int iter, t; \
- size_t dst_addrs[TEST_BATCH_SIZE], src_addrs[TEST_BATCH_SIZE]; \
- uint64_t start_time, total_time = 0; \
- uint64_t total_time2 = 0; \
- for (iter = 0; iter < (TEST_ITERATIONS / TEST_BATCH_SIZE); iter++) { \
- fill_addr_arrays(dst_addrs, is_dst_cached, dst_uoffset, \
- src_addrs, is_src_cached, src_uoffset); \
- start_time = rte_rdtsc(); \
- for (t = 0; t < TEST_BATCH_SIZE; t++) \
- rte_memcpy(dst+dst_addrs[t], src+src_addrs[t], size); \
- total_time += rte_rdtsc() - start_time; \
- } \
- for (iter = 0; iter < (TEST_ITERATIONS / TEST_BATCH_SIZE); iter++) { \
- fill_addr_arrays(dst_addrs, is_dst_cached, dst_uoffset, \
- src_addrs, is_src_cached, src_uoffset); \
- start_time = rte_rdtsc(); \
- for (t = 0; t < TEST_BATCH_SIZE; t++) \
- memcpy(dst+dst_addrs[t], src+src_addrs[t], size); \
- total_time2 += rte_rdtsc() - start_time; \
- } \
- printf("%8.0f -", (double)total_time /TEST_ITERATIONS); \
- printf("%5.0f", (double)total_time2 / TEST_ITERATIONS); \
-} while (0)
-
-/* Run aligned memcpy tests for each cached/uncached permutation */
-#define ALL_PERF_TESTS_FOR_SIZE(n) \
-do { \
- if (__builtin_constant_p(n)) \
- printf("\nC%6u", (unsigned)n); \
- else \
- printf("\n%7u", (unsigned)n); \
- SINGLE_PERF_TEST(small_buf_write, 1, 0, small_buf_read, 1, 0, n); \
- SINGLE_PERF_TEST(large_buf_write, 0, 0, small_buf_read, 1, 0, n); \
- SINGLE_PERF_TEST(small_buf_write, 1, 0, large_buf_read, 0, 0, n); \
- SINGLE_PERF_TEST(large_buf_write, 0, 0, large_buf_read, 0, 0, n); \
-} while (0)
-
-/* Run unaligned memcpy tests for each cached/uncached permutation */
-#define ALL_PERF_TESTS_FOR_SIZE_UNALIGNED(n) \
-do { \
- if (__builtin_constant_p(n)) \
- printf("\nC%6u", (unsigned)n); \
- else \
- printf("\n%7u", (unsigned)n); \
- SINGLE_PERF_TEST(small_buf_write, 1, 1, small_buf_read, 1, 5, n); \
- SINGLE_PERF_TEST(large_buf_write, 0, 1, small_buf_read, 1, 5, n); \
- SINGLE_PERF_TEST(small_buf_write, 1, 1, large_buf_read, 0, 5, n); \
- SINGLE_PERF_TEST(large_buf_write, 0, 1, large_buf_read, 0, 5, n); \
-} while (0)
-
-/* Run memcpy tests for constant length */
-#define ALL_PERF_TEST_FOR_CONSTANT \
-do { \
- TEST_CONSTANT(6U); TEST_CONSTANT(64U); TEST_CONSTANT(128U); \
- TEST_CONSTANT(192U); TEST_CONSTANT(256U); TEST_CONSTANT(512U); \
- TEST_CONSTANT(768U); TEST_CONSTANT(1024U); TEST_CONSTANT(1536U); \
-} while (0)
-
-/* Run all memcpy tests for aligned constant cases */
-static inline void
-perf_test_constant_aligned(void)
-{
-#define TEST_CONSTANT ALL_PERF_TESTS_FOR_SIZE
- ALL_PERF_TEST_FOR_CONSTANT;
-#undef TEST_CONSTANT
-}
-
-/* Run all memcpy tests for unaligned constant cases */
-static inline void
-perf_test_constant_unaligned(void)
-{
-#define TEST_CONSTANT ALL_PERF_TESTS_FOR_SIZE_UNALIGNED
- ALL_PERF_TEST_FOR_CONSTANT;
-#undef TEST_CONSTANT
-}
-
-/* Run all memcpy tests for aligned variable cases */
-static inline void
-perf_test_variable_aligned(void)
-{
- unsigned n = sizeof(buf_sizes) / sizeof(buf_sizes[0]);
- unsigned i;
- for (i = 0; i < n; i++) {
- ALL_PERF_TESTS_FOR_SIZE((size_t)buf_sizes[i]);
- }
-}
-
-/* Run all memcpy tests for unaligned variable cases */
-static inline void
-perf_test_variable_unaligned(void)
-{
- unsigned n = sizeof(buf_sizes) / sizeof(buf_sizes[0]);
- unsigned i;
- for (i = 0; i < n; i++) {
- ALL_PERF_TESTS_FOR_SIZE_UNALIGNED((size_t)buf_sizes[i]);
- }
-}
-
-/* Run all memcpy tests */
-static int
-perf_test(void)
-{
- int ret;
-
- ret = init_buffers();
- if (ret != 0)
- return ret;
-
-#if TEST_VALUE_RANGE != 0
- /* Set up buf_sizes array, if required */
- unsigned i;
- for (i = 0; i < TEST_VALUE_RANGE; i++)
- buf_sizes[i] = i;
-#endif
-
- /* See function comment */
- do_uncached_write(large_buf_write, 0, small_buf_read, 1, SMALL_BUFFER_SIZE);
-
- printf("\n** rte_memcpy() - memcpy perf. tests (C = compile-time constant) **\n"
- "======= ============== ============== ============== ==============\n"
- " Size Cache to cache Cache to mem Mem to cache Mem to mem\n"
- "(bytes) (ticks) (ticks) (ticks) (ticks)\n"
- "------- -------------- -------------- -------------- --------------");
-
- printf("\n========================== %2dB aligned ============================", ALIGNMENT_UNIT);
- /* Do aligned tests where size is a variable */
- perf_test_variable_aligned();
- printf("\n------- -------------- -------------- -------------- --------------");
- /* Do aligned tests where size is a compile-time constant */
- perf_test_constant_aligned();
- printf("\n=========================== Unaligned =============================");
- /* Do unaligned tests where size is a variable */
- perf_test_variable_unaligned();
- printf("\n------- -------------- -------------- -------------- --------------");
- /* Do unaligned tests where size is a compile-time constant */
- perf_test_constant_unaligned();
- printf("\n======= ============== ============== ============== ==============\n\n");
-
- free_buffers();
-
- return 0;
-}
-
-static int
-test_memcpy_perf(void)
-{
- int ret;
-
- ret = perf_test();
- if (ret != 0)
- return -1;
- return 0;
-}
-
-REGISTER_TEST_COMMAND(memcpy_perf_autotest, test_memcpy_perf);
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