On a 32-core system the test matrix runs the cartesian product of 4 mempools, 3 core-count configurations and ~340 (n_keep, bulk) points at TIME_S=1 second each: about 67 minutes total, well past the 10 minute perf-test timeout.
Two reductions, no loss of meaningful signal: 1. Per-point duration: 1 second -> 200 ms. Each point currently collects 10^5-10^6 mempool ops; 200 ms still yields >10^4 samples, well above the noise floor for a cycles-per-op average. 2. Matrix trim: drop adjacent bulk and n_keep points that don't produce regime changes. Retained set covers the boundaries that matter: 1, 4, cache-line burst (8), typical packet burst (32) and cache size (RTE_MEMPOOL_CACHE_MAX_SIZE = 512) for bulk; 32 (fits in cache), 512 (= cache size) and 32768 (far exceeds cache) for n_keep. Combined effect: ~10x runtime reduction. Signed-off-by: Stephen Hemminger <[email protected]> --- app/test/test_mempool_perf.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) diff --git a/app/test/test_mempool_perf.c b/app/test/test_mempool_perf.c index dd2f0bbaca..6801812a8d 100644 --- a/app/test/test_mempool_perf.c +++ b/app/test/test_mempool_perf.c @@ -61,26 +61,21 @@ * * - Pseudorandom max bulk size (*n_max_bulk*) * - * - Max bulk from CACHE_LINE_BURST to 256, and RTE_MEMPOOL_CACHE_MAX_SIZE, - * where CACHE_LINE_BURST is the number of pointers fitting into one CPU cache line. + * - Max bulk: CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE, + * where CACHE_LINE_BURST is the number of pointers fitting into + * one CPU cache line. * * - Fixed bulk size (*n_get_bulk*, *n_put_bulk*) * - * - Bulk get from 1 to 256, and RTE_MEMPOOL_CACHE_MAX_SIZE - * - Bulk put from 1 to 256, and RTE_MEMPOOL_CACHE_MAX_SIZE - * - Bulk get and put from 1 to 256, and RTE_MEMPOOL_CACHE_MAX_SIZE, compile time constant + * - Bulk get: 1, 4, CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE + * - Bulk put: 1, 4, CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE * * - Number of kept objects (*n_keep*) * - * - 32 - * - 128 - * - 512 - * - 2048 - * - 8192 - * - 32768 + * - 32, 512, 32768 */ -#define TIME_S 1 +#define TIME_MS 200 #define MEMPOOL_ELT_SIZE 2048 #define MAX_KEEP 32768 #define N (128 * MAX_KEEP) @@ -257,7 +252,7 @@ per_lcore_mempool_test(void *arg) start_cycles = rte_get_timer_cycles(); - while (time_diff/hz < TIME_S) { + while (time_diff < hz * TIME_MS / 1000) { if (n_max_bulk != 0) ret = test_loop_random(mp, cache, n_keep, n_max_bulk); else if (!use_constant_values) @@ -376,13 +371,10 @@ launch_cores(struct rte_mempool *mp, unsigned int cores) static int do_one_mempool_test(struct rte_mempool *mp, unsigned int cores, int external_cache) { - unsigned int bulk_tab_max[] = { CACHE_LINE_BURST, 32, 64, 128, 256, - RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; - unsigned int bulk_tab_get[] = { 1, 4, CACHE_LINE_BURST, 32, 64, 128, 256, - RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; - unsigned int bulk_tab_put[] = { 1, 4, CACHE_LINE_BURST, 32, 64, 128, 256, - RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; - unsigned int keep_tab[] = { 32, 128, 512, 2048, 8192, 32768, 0 }; + unsigned int bulk_tab_max[] = { CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; + unsigned int bulk_tab_get[] = { 1, 4, CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; + unsigned int bulk_tab_put[] = { 1, 4, CACHE_LINE_BURST, 32, RTE_MEMPOOL_CACHE_MAX_SIZE, 0 }; + unsigned int keep_tab[] = { 32, 512, 32768, 0 }; unsigned int *max_bulk_ptr; unsigned int *get_bulk_ptr; unsigned int *put_bulk_ptr; -- 2.53.0
