[ceph.git] / ceph / src / spdk / dpdk / app / test / test_memcpy_perf.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/time.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("%3.0f -", (double)total_time  / TEST_ITERATIONS);                 \
    printf("%3.0f",   (double)total_time2 / TEST_ITERATIONS);                 \
    printf("(%6.2f%%) ", ((double)total_time - total_time2)*100/total_time2); \
} 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 i;
	for (i = 0; i < RTE_DIM(buf_sizes); 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 i;
	for (i = 0; i < RTE_DIM(buf_sizes); i++) {
		ALL_PERF_TESTS_FOR_SIZE_UNALIGNED((size_t)buf_sizes[i]);
	}
}

/* Run all memcpy tests */
static int
perf_test(void)
{
	int ret;
	struct timeval tv_begin, tv_end;
	double time_aligned, time_unaligned;
	double time_aligned_const, time_unaligned_const;

	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 */
	gettimeofday(&tv_begin, NULL);
	perf_test_variable_aligned();
	gettimeofday(&tv_end, NULL);
	time_aligned = (double)(tv_end.tv_sec - tv_begin.tv_sec)
		+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	printf("\n------- ----------------- ----------------- ----------------- -----------------");
	/* Do aligned tests where size is a compile-time constant */
	gettimeofday(&tv_begin, NULL);
	perf_test_constant_aligned();
	gettimeofday(&tv_end, NULL);
	time_aligned_const = (double)(tv_end.tv_sec - tv_begin.tv_sec)
		+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	printf("\n================================== Unaligned ==================================");
	/* Do unaligned tests where size is a variable */
	gettimeofday(&tv_begin, NULL);
	perf_test_variable_unaligned();
	gettimeofday(&tv_end, NULL);
	time_unaligned = (double)(tv_end.tv_sec - tv_begin.tv_sec)
		+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	printf("\n------- ----------------- ----------------- ----------------- -----------------");
	/* Do unaligned tests where size is a compile-time constant */
	gettimeofday(&tv_begin, NULL);
	perf_test_constant_unaligned();
	gettimeofday(&tv_end, NULL);
	time_unaligned_const = (double)(tv_end.tv_sec - tv_begin.tv_sec)
		+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	printf("\n======= ================= ================= ================= =================\n\n");

	printf("Test Execution Time (seconds):\n");
	printf("Aligned variable copy size   = %8.3f\n", time_aligned);
	printf("Aligned constant copy size   = %8.3f\n", time_aligned_const);
	printf("Unaligned variable copy size = %8.3f\n", time_unaligned);
	printf("Unaligned constant copy size = %8.3f\n", time_unaligned_const);
	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);
Commit	Line	Data
11fdf7f2 TL	1	/* SPDX-License-Identifier: BSD-3-Clause
11fdf7f2 TL	2	* Copyright(c) 2010-2014 Intel Corporation
7c673cae FG	3	*/
	4
	5	#include <stdint.h>
	6	#include <stdio.h>
	7	#include <string.h>
	8	#include <stdlib.h>
11fdf7f2	9	#include <sys/time.h>
7c673cae FG	10
	11	#include <rte_common.h>
	12	#include <rte_cycles.h>
	13	#include <rte_random.h>
	14	#include <rte_malloc.h>
	15
	16	#include <rte_memcpy.h>
	17
	18	#include "test.h"
	19
	20	/*
	21	* Set this to the maximum buffer size you want to test. If it is 0, then the
	22	* values in the buf_sizes[] array below will be used.
	23	*/
	24	#define TEST_VALUE_RANGE 0
	25
	26	/* List of buffer sizes to test */
	27	#if TEST_VALUE_RANGE == 0
	28	static size_t buf_sizes[] = {
	29	1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15, 16, 17, 31, 32, 33, 63, 64, 65, 127, 128,
	30	129, 191, 192, 193, 255, 256, 257, 319, 320, 321, 383, 384, 385, 447, 448,
	31	449, 511, 512, 513, 767, 768, 769, 1023, 1024, 1025, 1518, 1522, 1536, 1600,
	32	2048, 2560, 3072, 3584, 4096, 4608, 5120, 5632, 6144, 6656, 7168, 7680, 8192
	33	};
	34	/* MUST be as large as largest packet size above */
	35	#define SMALL_BUFFER_SIZE 8192
	36	#else /* TEST_VALUE_RANGE != 0 */
	37	static size_t buf_sizes[TEST_VALUE_RANGE];
	38	#define SMALL_BUFFER_SIZE TEST_VALUE_RANGE
	39	#endif /* TEST_VALUE_RANGE == 0 */
	40
	41
	42	/*
	43	* Arrays of this size are used for measuring uncached memory accesses by
	44	* picking a random location within the buffer. Make this smaller if there are
	45	* memory allocation errors.
	46	*/
	47	#define LARGE_BUFFER_SIZE (100 * 1024 * 1024)
	48
	49	/* How many times to run timing loop for performance tests */
	50	#define TEST_ITERATIONS 1000000
	51	#define TEST_BATCH_SIZE 100
	52
	53	/* Data is aligned on this many bytes (power of 2) */
	54	#ifdef RTE_MACHINE_CPUFLAG_AVX512F
	55	#define ALIGNMENT_UNIT 64
	56	#elif defined RTE_MACHINE_CPUFLAG_AVX2
	57	#define ALIGNMENT_UNIT 32
	58	#else /* RTE_MACHINE_CPUFLAG */
	59	#define ALIGNMENT_UNIT 16
	60	#endif /* RTE_MACHINE_CPUFLAG */
	61
	62	/*
	63	* Pointers used in performance tests. The two large buffers are for uncached
	64	* access where random addresses within the buffer are used for each
	65	* memcpy. The two small buffers are for cached access.
	66	*/
	67	static uint8_t large_buf_read, large_buf_write;
	68	static uint8_t small_buf_read, small_buf_write;
	69
	70	/* Initialise data buffers. */
	71	static int
	72	init_buffers(void)
	73	{
74	unsigned i;
75
76	large_buf_read = rte_malloc("memcpy", LARGE_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
77	if (large_buf_read == NULL)
78	goto error_large_buf_read;
79
80	large_buf_write = rte_malloc("memcpy", LARGE_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
81	if (large_buf_write == NULL)
82	goto error_large_buf_write;
83
84	small_buf_read = rte_malloc("memcpy", SMALL_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
85	if (small_buf_read == NULL)
86	goto error_small_buf_read;
87
88	small_buf_write = rte_malloc("memcpy", SMALL_BUFFER_SIZE + ALIGNMENT_UNIT, ALIGNMENT_UNIT);
89	if (small_buf_write == NULL)
90	goto error_small_buf_write;
91
92	for (i = 0; i < LARGE_BUFFER_SIZE; i++)
93	large_buf_read[i] = rte_rand();
94	for (i = 0; i < SMALL_BUFFER_SIZE; i++)
95	small_buf_read[i] = rte_rand();
96
97	return 0;
98
99	error_small_buf_write:
100	rte_free(small_buf_read);
101	error_small_buf_read:
102	rte_free(large_buf_write);
103	error_large_buf_write:
104	rte_free(large_buf_read);
105	error_large_buf_read:
106	printf("ERROR: not enough memory\n");
107	return -1;
108	}
109
110	/* Cleanup data buffers */
111	static void
112	free_buffers(void)
113	{
114	rte_free(large_buf_read);
115	rte_free(large_buf_write);
116	rte_free(small_buf_read);
117	rte_free(small_buf_write);
118	}
119
120	/*
121	* Get a random offset into large array, with enough space needed to perform
122	* max copy size. Offset is aligned, uoffset is used for unalignment setting.
123	*/
124	static inline size_t
125	get_rand_offset(size_t uoffset)
126	{
127	return ((rte_rand() % (LARGE_BUFFER_SIZE - SMALL_BUFFER_SIZE)) &
128	~(ALIGNMENT_UNIT - 1)) + uoffset;
129	}
130
131	/* Fill in source and destination addresses. */
132	static inline void
133	fill_addr_arrays(size_t *dst_addr, int is_dst_cached, size_t dst_uoffset,
134	size_t *src_addr, int is_src_cached, size_t src_uoffset)
135	{
136	unsigned int i;
137
138	for (i = 0; i < TEST_BATCH_SIZE; i++) {
139	dst_addr[i] = (is_dst_cached) ? dst_uoffset : get_rand_offset(dst_uoffset);
140	src_addr[i] = (is_src_cached) ? src_uoffset : get_rand_offset(src_uoffset);
141	}
142	}
143
144	/*
145	* WORKAROUND: For some reason the first test doing an uncached write
146	* takes a very long time (~25 times longer than is expected). So we do
147	* it once without timing.
148	*/
149	static void
150	do_uncached_write(uint8_t *dst, int is_dst_cached,
151	const uint8_t *src, int is_src_cached, size_t size)
152	{
153	unsigned i, j;
154	size_t dst_addrs[TEST_BATCH_SIZE], src_addrs[TEST_BATCH_SIZE];
155
156	for (i = 0; i < (TEST_ITERATIONS / TEST_BATCH_SIZE); i++) {
157	fill_addr_arrays(dst_addrs, is_dst_cached, 0,
158	src_addrs, is_src_cached, 0);
159	for (j = 0; j < TEST_BATCH_SIZE; j++) {
160	rte_memcpy(dst+dst_addrs[j], src+src_addrs[j], size);
161	}
162	}
163	}
164
165	/*
166	* Run a single memcpy performance test. This is a macro to ensure that if
167	* the "size" parameter is a constant it won't be converted to a variable.
168	*/
169	#define SINGLE_PERF_TEST(dst, is_dst_cached, dst_uoffset, \
170	src, is_src_cached, src_uoffset, size) \
171	do { \
172	unsigned int iter, t; \
173	size_t dst_addrs[TEST_BATCH_SIZE], src_addrs[TEST_BATCH_SIZE]; \
174	uint64_t start_time, total_time = 0; \
175	uint64_t total_time2 = 0; \
176	for (iter = 0; iter < (TEST_ITERATIONS / TEST_BATCH_SIZE); iter++) { \
177	fill_addr_arrays(dst_addrs, is_dst_cached, dst_uoffset, \
178	src_addrs, is_src_cached, src_uoffset); \
179	start_time = rte_rdtsc(); \
180	for (t = 0; t < TEST_BATCH_SIZE; t++) \
181	rte_memcpy(dst+dst_addrs[t], src+src_addrs[t], size); \
182	total_time += rte_rdtsc() - start_time; \
183	} \
184	for (iter = 0; iter < (TEST_ITERATIONS / TEST_BATCH_SIZE); iter++) { \
185	fill_addr_arrays(dst_addrs, is_dst_cached, dst_uoffset, \
186	src_addrs, is_src_cached, src_uoffset); \
187	start_time = rte_rdtsc(); \
188	for (t = 0; t < TEST_BATCH_SIZE; t++) \
189	memcpy(dst+dst_addrs[t], src+src_addrs[t], size); \
190	total_time2 += rte_rdtsc() - start_time; \
191	} \
11fdf7f2 TL	192	printf("%3.0f -", (double)total_time / TEST_ITERATIONS); \
	193	printf("%3.0f", (double)total_time2 / TEST_ITERATIONS); \
	194	printf("(%6.2f%%) ", ((double)total_time - total_time2)*100/total_time2); \
7c673cae FG	195	} while (0)
	196
	197	/* Run aligned memcpy tests for each cached/uncached permutation */
	198	#define ALL_PERF_TESTS_FOR_SIZE(n) \
	199	do { \
	200	if (__builtin_constant_p(n)) \
	201	printf("\nC%6u", (unsigned)n); \
	202	else \
	203	printf("\n%7u", (unsigned)n); \
	204	SINGLE_PERF_TEST(small_buf_write, 1, 0, small_buf_read, 1, 0, n); \
	205	SINGLE_PERF_TEST(large_buf_write, 0, 0, small_buf_read, 1, 0, n); \
	206	SINGLE_PERF_TEST(small_buf_write, 1, 0, large_buf_read, 0, 0, n); \
	207	SINGLE_PERF_TEST(large_buf_write, 0, 0, large_buf_read, 0, 0, n); \
	208	} while (0)
	209
	210	/* Run unaligned memcpy tests for each cached/uncached permutation */
	211	#define ALL_PERF_TESTS_FOR_SIZE_UNALIGNED(n) \
	212	do { \
	213	if (__builtin_constant_p(n)) \
	214	printf("\nC%6u", (unsigned)n); \
	215	else \
	216	printf("\n%7u", (unsigned)n); \
	217	SINGLE_PERF_TEST(small_buf_write, 1, 1, small_buf_read, 1, 5, n); \
	218	SINGLE_PERF_TEST(large_buf_write, 0, 1, small_buf_read, 1, 5, n); \
	219	SINGLE_PERF_TEST(small_buf_write, 1, 1, large_buf_read, 0, 5, n); \
	220	SINGLE_PERF_TEST(large_buf_write, 0, 1, large_buf_read, 0, 5, n); \
	221	} while (0)
	222
	223	/* Run memcpy tests for constant length */
	224	#define ALL_PERF_TEST_FOR_CONSTANT \
	225	do { \
	226	TEST_CONSTANT(6U); TEST_CONSTANT(64U); TEST_CONSTANT(128U); \
	227	TEST_CONSTANT(192U); TEST_CONSTANT(256U); TEST_CONSTANT(512U); \
	228	TEST_CONSTANT(768U); TEST_CONSTANT(1024U); TEST_CONSTANT(1536U); \
	229	} while (0)
	230
	231	/* Run all memcpy tests for aligned constant cases */
	232	static inline void
	233	perf_test_constant_aligned(void)
	234	{
	235	#define TEST_CONSTANT ALL_PERF_TESTS_FOR_SIZE
	236	ALL_PERF_TEST_FOR_CONSTANT;
	237	#undef TEST_CONSTANT
	238	}
	239
	240	/* Run all memcpy tests for unaligned constant cases */
	241	static inline void
	242	perf_test_constant_unaligned(void)
	243	{
	244	#define TEST_CONSTANT ALL_PERF_TESTS_FOR_SIZE_UNALIGNED
	245	ALL_PERF_TEST_FOR_CONSTANT;
	246	#undef TEST_CONSTANT
	247	}
	248
	249	/* Run all memcpy tests for aligned variable cases */
	250	static inline void
	251	perf_test_variable_aligned(void)
	252	{
7c673cae	253	unsigned i;
f67539c2	254	for (i = 0; i < RTE_DIM(buf_sizes); i++) {
7c673cae FG	255	ALL_PERF_TESTS_FOR_SIZE((size_t)buf_sizes[i]);
	256	}
	257	}
	258
	259	/* Run all memcpy tests for unaligned variable cases */
	260	static inline void
	261	perf_test_variable_unaligned(void)
	262	{
7c673cae	263	unsigned i;
f67539c2	264	for (i = 0; i < RTE_DIM(buf_sizes); i++) {
7c673cae FG	265	ALL_PERF_TESTS_FOR_SIZE_UNALIGNED((size_t)buf_sizes[i]);
	266	}
	267	}
	268
	269	/* Run all memcpy tests */
	270	static int
	271	perf_test(void)
	272	{
	273	int ret;
11fdf7f2 TL	274	struct timeval tv_begin, tv_end;
	275	double time_aligned, time_unaligned;
	276	double time_aligned_const, time_unaligned_const;
7c673cae FG	277
	278	ret = init_buffers();
	279	if (ret != 0)
	280	return ret;
	281
	282	#if TEST_VALUE_RANGE != 0
	283	/* Set up buf_sizes array, if required */
	284	unsigned i;
	285	for (i = 0; i < TEST_VALUE_RANGE; i++)
	286	buf_sizes[i] = i;
	287	#endif
	288
	289	/* See function comment */
	290	do_uncached_write(large_buf_write, 0, small_buf_read, 1, SMALL_BUFFER_SIZE);
	291
	292	printf("\n rte_memcpy() - memcpy perf. tests (C = compile-time constant) \n"
11fdf7f2 TL	293	"======= ================= ================= ================= =================\n"
	294	" Size Cache to cache Cache to mem Mem to cache Mem to mem\n"
	295	"(bytes) (ticks) (ticks) (ticks) (ticks)\n"
	296	"------- ----------------- ----------------- ----------------- -----------------");
7c673cae	297
11fdf7f2 TL	298	printf("\n================================= %2dB aligned =================================",
11fdf7f2 TL	299	ALIGNMENT_UNIT);
7c673cae	300	/* Do aligned tests where size is a variable */
11fdf7f2	301	gettimeofday(&tv_begin, NULL);
7c673cae	302	perf_test_variable_aligned();
11fdf7f2 TL	303	gettimeofday(&tv_end, NULL);
	304	time_aligned = (double)(tv_end.tv_sec - tv_begin.tv_sec)
	305	+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	306	printf("\n------- ----------------- ----------------- ----------------- -----------------");
7c673cae	307	/* Do aligned tests where size is a compile-time constant */
11fdf7f2	308	gettimeofday(&tv_begin, NULL);
7c673cae	309	perf_test_constant_aligned();
11fdf7f2 TL	310	gettimeofday(&tv_end, NULL);
	311	time_aligned_const = (double)(tv_end.tv_sec - tv_begin.tv_sec)
	312	+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	313	printf("\n================================== Unaligned ==================================");
7c673cae	314	/* Do unaligned tests where size is a variable */
11fdf7f2	315	gettimeofday(&tv_begin, NULL);
7c673cae	316	perf_test_variable_unaligned();
11fdf7f2 TL	317	gettimeofday(&tv_end, NULL);
	318	time_unaligned = (double)(tv_end.tv_sec - tv_begin.tv_sec)
	319	+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	320	printf("\n------- ----------------- ----------------- ----------------- -----------------");
7c673cae	321	/* Do unaligned tests where size is a compile-time constant */
11fdf7f2	322	gettimeofday(&tv_begin, NULL);
7c673cae	323	perf_test_constant_unaligned();
11fdf7f2 TL	324	gettimeofday(&tv_end, NULL);
	325	time_unaligned_const = (double)(tv_end.tv_sec - tv_begin.tv_sec)
	326	+ ((double)tv_end.tv_usec - tv_begin.tv_usec)/1000000;
	327	printf("\n======= ================= ================= ================= =================\n\n");
	328
	329	printf("Test Execution Time (seconds):\n");
	330	printf("Aligned variable copy size = %8.3f\n", time_aligned);
	331	printf("Aligned constant copy size = %8.3f\n", time_aligned_const);
	332	printf("Unaligned variable copy size = %8.3f\n", time_unaligned);
	333	printf("Unaligned constant copy size = %8.3f\n", time_unaligned_const);
7c673cae FG	334	free_buffers();
	335
	336	return 0;
	337	}
	338
	339	static int
	340	test_memcpy_perf(void)
	341	{
	342	int ret;
	343
	344	ret = perf_test();
	345	if (ret != 0)
	346	return -1;
	347	return 0;
	348	}
	349
	350	REGISTER_TEST_COMMAND(memcpy_perf_autotest, test_memcpy_perf);