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Diffstat (limited to 'app/test/test_memcpy_perf.c')
| -rw-r--r-- | app/test/test_memcpy_perf.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/app/test/test_memcpy_perf.c b/app/test/test_memcpy_perf.c deleted file mode 100644 index ff3aaaac..00000000 --- a/app/test/test_memcpy_perf.c +++ /dev/null @@ -1,354 +0,0 @@ -/*- - * 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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