[dpdk-dev] [PATCH v6 4/4] test/thash: add performance tests for the Toeplitz hash

[Vladimir Medvedkin <vladimir.medvedkin@intel.com>]

This patch adds performance tests for the following Toeplitz hash
function implementations:
  Scalar:
    - rte_softrss()
    - rte_softrss_be()
  Vector using gfni:
    - rte_thash_gfni()
    - rte_thash_gfni_bulk()

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
---
 app/test/meson.build       |   2 +
 app/test/test_thash_perf.c | 119 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 121 insertions(+)
 create mode 100644 app/test/test_thash_perf.c

diff --git a/app/test/meson.build b/app/test/meson.build
index 20f36a1..913e8f6 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -144,6 +144,7 @@ test_sources = files(
         'test_table_tables.c',
         'test_tailq.c',
         'test_thash.c',
+        'test_thash_perf.c',
         'test_timer.c',
         'test_timer_perf.c',
         'test_timer_racecond.c',
@@ -322,6 +323,7 @@ perf_test_names = [
         'hash_readwrite_lf_perf_autotest',
         'trace_perf_autotest',
         'ipsec_perf_autotest',
+        'thash_perf_autotest',
 ]
 
 driver_test_names = [
diff --git a/app/test/test_thash_perf.c b/app/test/test_thash_perf.c
new file mode 100644
index 0000000..5454b69
--- /dev/null
+++ b/app/test/test_thash_perf.c
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include <rte_cycles.h>
+#include <rte_malloc.h>
+#include <rte_random.h>
+#include <rte_thash.h>
+
+#include "test.h"
+
+#define ITERATIONS	(1 << 15)
+#define	BATCH_SZ	(1 << 10)
+
+#define IPV4_2_TUPLE_LEN	(8)
+#define IPV4_4_TUPLE_LEN	(12)
+#define IPV6_2_TUPLE_LEN	(32)
+#define IPV6_4_TUPLE_LEN	(36)
+
+
+static const uint8_t default_rss_key[] = {
+	0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
+	0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
+	0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
+	0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
+	0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa,
+};
+
+static void
+run_thash_test(unsigned int tuple_len)
+{
+	uint32_t *tuples[BATCH_SZ];
+	unsigned int i, j;
+	uint64_t start_tsc, end_tsc;
+	uint32_t len = RTE_ALIGN_CEIL(tuple_len, sizeof(uint32_t));
+	volatile uint32_t hash = 0;
+	uint32_t bulk_hash[BATCH_SZ] = { 0 };
+
+	for (i = 0; i < BATCH_SZ; i++) {
+		tuples[i] = rte_zmalloc(NULL, len, 0);
+		for (j = 0; j < len / sizeof(uint32_t); j++)
+			tuples[i][j] = rte_rand();
+	}
+
+	start_tsc = rte_rdtsc_precise();
+	for (i = 0; i < ITERATIONS; i++) {
+		for (j = 0; j < BATCH_SZ; j++) {
+			hash ^= rte_softrss(tuples[j], len / sizeof(uint32_t),
+				default_rss_key);
+		}
+	}
+	end_tsc = rte_rdtsc_precise();
+
+	printf("Average rte_softrss() takes \t\t%.1f cycles for key len %d\n",
+		(double)(end_tsc - start_tsc) / (double)(ITERATIONS *
+		BATCH_SZ), len);
+
+	start_tsc = rte_rdtsc_precise();
+	for (i = 0; i < ITERATIONS; i++) {
+		for (j = 0; j < BATCH_SZ; j++) {
+			hash ^= rte_softrss_be(tuples[j], len /
+				sizeof(uint32_t), default_rss_key);
+		}
+	}
+	end_tsc = rte_rdtsc_precise();
+
+	printf("Average rte_softrss_be() takes \t\t%.1f cycles for key len %d\n",
+		(double)(end_tsc - start_tsc) / (double)(ITERATIONS *
+		BATCH_SZ), len);
+
+	if (!rte_thash_gfni_supported())
+		return;
+
+	uint64_t rss_key_matrixes[RTE_DIM(default_rss_key)];
+
+	rte_thash_complete_matrix(rss_key_matrixes, default_rss_key,
+		RTE_DIM(default_rss_key));
+
+	start_tsc = rte_rdtsc_precise();
+	for (i = 0; i < ITERATIONS; i++) {
+		for (j = 0; j < BATCH_SZ; j++)
+			hash ^= rte_thash_gfni(rss_key_matrixes,
+				(uint8_t *)tuples[j], len);
+	}
+	end_tsc = rte_rdtsc_precise();
+
+	printf("Average rte_thash_gfni takes \t\t%.1f cycles for key len %d\n",
+		(double)(end_tsc - start_tsc) / (double)(ITERATIONS *
+		BATCH_SZ), len);
+
+	start_tsc = rte_rdtsc_precise();
+	for (i = 0; i < ITERATIONS; i++)
+		rte_thash_gfni_bulk(rss_key_matrixes, len, (uint8_t **)tuples,
+			bulk_hash, BATCH_SZ);
+
+	end_tsc = rte_rdtsc_precise();
+
+	printf("Average rte_thash_gfni_bulk takes \t%.1f cycles for key len %d\n",
+		(double)(end_tsc - start_tsc) / (double)(ITERATIONS *
+		BATCH_SZ), len);
+}
+
+static int
+test_thash_perf(void)
+{
+	run_thash_test(IPV4_2_TUPLE_LEN);
+	run_thash_test(IPV4_4_TUPLE_LEN);
+	run_thash_test(IPV6_2_TUPLE_LEN);
+	run_thash_test(IPV6_4_TUPLE_LEN);
+
+	return 0;
+}
+
+REGISTER_TEST_COMMAND(thash_perf_autotest, test_thash_perf);
-- 
2.7.4