[dpdk-dev] [PATCH v4 1/5] test/hash: fix bucket size in hash perf test

[Yipeng Wang]

The bucket size was changed from 4 to 8 but the corresponding
perf test was not changed accordingly.

In the test, the bucket size and number of buckets are used
to map to the underneath rte_hash structure. They are used
to test performance of two conditions: keys in primary
buckets only and keys in both primary and secondary buckets.

Although there is no functional issue with bucket size set
to 4, it mismatches the underneath rte_hash structure,
which may affect code readability and future extension.

Fixes: 58017c98ed53 ("hash: add vectorized comparison")
Cc: stable at dpdk.org

Signed-off-by: Yipeng Wang <yipeng1.wang at intel.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
 test/test/test_hash_perf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/test/test_hash_perf.c b/test/test/test_hash_perf.c
index 33dcb9f..fe11632 100644
--- a/test/test/test_hash_perf.c
+++ b/test/test/test_hash_perf.c
@@ -20,7 +20,8 @@
 #define MAX_ENTRIES (1 << 19)
 #define KEYS_TO_ADD (MAX_ENTRIES * 3 / 4) /* 75% table utilization */
 #define NUM_LOOKUPS (KEYS_TO_ADD * 5) /* Loop among keys added, several times */
-#define BUCKET_SIZE 4
+/* BUCKET_SIZE should be same as RTE_HASH_BUCKET_ENTRIES in rte_hash library */
+#define BUCKET_SIZE 8
 #define NUM_BUCKETS (MAX_ENTRIES / BUCKET_SIZE)
 #define MAX_KEYSIZE 64
 #define NUM_KEYSIZES 10
-- 
2.7.4