[dpdk-dev] [PATCH 3/3] test: add dwk perf tests

[Vladimir Medvedkin]

Add performance tests for rte_dwk_hash.

Signed-off-by: Vladimir Medvedkin <vladimir.medved...@intel.com>
---
 app/test/test_hash_perf.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

diff --git a/app/test/test_hash_perf.c b/app/test/test_hash_perf.c
index a438eae..f616af1 100644
--- a/app/test/test_hash_perf.c
+++ b/app/test/test_hash_perf.c
@@ -12,8 +12,10 @@
 #include <rte_hash_crc.h>
 #include <rte_jhash.h>
 #include <rte_fbk_hash.h>
+#include <rte_dwk_hash.h>
 #include <rte_random.h>
 #include <rte_string_fns.h>
+#include <rte_hash_crc.h>
 
 #include "test.h"
 
@@ -29,6 +31,8 @@
 #define NUM_SHUFFLES 10
 #define BURST_SIZE 16
 
+#define CRC_INIT_VAL   0xdeadbeef
+
 enum operations {
        ADD = 0,
        LOOKUP,
@@ -669,6 +673,80 @@ fbk_hash_perf_test(void)
 }
 
 static int
+dwk_hash_perf_test(void)
+{
+       struct rte_dwk_hash_params params = {
+               .name = "dwk_hash_test",
+               .entries = ENTRIES,
+               .socket_id = rte_socket_id(),
+       };
+       struct rte_dwk_hash_table *handle = NULL;
+       uint32_t *keys = NULL;
+       unsigned indexes[TEST_SIZE];
+       uint64_t tmp_val;
+       uint64_t lookup_time = 0;
+       unsigned added = 0;
+       uint32_t key;
+       uint16_t val;
+       unsigned i, j;
+       int ret = 0;
+
+       handle = rte_dwk_hash_create(&params);
+       if (handle == NULL) {
+               printf("Error creating table\n");
+               return -1;
+       }
+
+       keys = rte_zmalloc(NULL, ENTRIES * sizeof(*keys), 0);
+       if (keys == NULL) {
+               printf("fbk hash: memory allocation for key store failed\n");
+               return -1;
+       }
+
+       /* Generate random keys and values. */
+       for (i = 0; i < ENTRIES; i++) {
+               key = (uint32_t)rte_rand();
+               val = rte_rand();
+
+               if (rte_dwk_hash_add(handle, key, rte_hash_crc_4byte(key,
+                               CRC_INIT_VAL), val) == 0) {
+                       keys[added] = key;
+                       added++;
+               }
+       }
+
+       for (i = 0; i < TEST_ITERATIONS; i++) {
+               uint64_t begin;
+               uint64_t end;
+
+               /* Generate random indexes into keys[] array. */
+               for (j = 0; j < TEST_SIZE; j++)
+                       indexes[j] = rte_rand() % added;
+
+               begin = rte_rdtsc();
+               /* Do lookups */
+               for (j = 0; j < TEST_SIZE; j++)
+                       ret += rte_dwk_hash_lookup(handle,
+                               keys[indexes[j]],
+                               rte_hash_crc_4byte(keys[indexes[j]],
+                               CRC_INIT_VAL), &tmp_val);
+
+               end = rte_rdtsc();
+               lookup_time += (double)(end - begin);
+       }
+
+       printf("\n\n *** DWK Hash function performance test results ***\n");
+       if (ret == 0)
+               printf("Number of ticks per lookup = %g\n",
+                       (double)lookup_time /
+                       ((double)TEST_ITERATIONS * (double)TEST_SIZE));
+
+       rte_dwk_hash_free(handle);
+
+       return 0;
+}
+
+static int
 test_hash_perf(void)
 {
        unsigned int with_pushes, with_locks;
@@ -695,6 +773,9 @@ test_hash_perf(void)
        if (fbk_hash_perf_test() < 0)
                return -1;
 
+       if (dwk_hash_perf_test() < 0)
+               return -1;
+
        return 0;
 }
 
-- 
2.7.4