/*-
* BSD LICENSE
*
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <rte_mbuf.h>
#include <rte_distributor.h>
-#define ITER_POWER 20 /* log 2 of how many iterations we do when timing. */
-#define BURST 32
+#define ITER_POWER_CL 25 /* log 2 of how many iterations for Cache Line test */
+#define ITER_POWER 21 /* log 2 of how many iterations we do when timing. */
+#define BURST 64
#define BIG_BATCH 1024
/* static vars - zero initialized by default */
} __rte_cache_aligned;
struct worker_stats worker_stats[RTE_MAX_LCORE];
-/* worker thread used for testing the time to do a round-trip of a cache
+/*
+ * worker thread used for testing the time to do a round-trip of a cache
* line between two cores and back again
*/
static void
}
}
-/* test case to time the number of cycles to round-trip a cache line between
+/*
+ * test case to time the number of cycles to round-trip a cache line between
* two cores and back again.
*/
static void
rte_pause();
const uint64_t start_time = rte_rdtsc();
- for (i = 0; i < (1 << ITER_POWER); i++) {
+ for (i = 0; i < (1 << ITER_POWER_CL); i++) {
while (*pdata)
rte_pause();
*pdata = 1;
*pdata = 2;
rte_eal_wait_lcore(slaveid);
printf("==== Cache line switch test ===\n");
- printf("Time for %u iterations = %"PRIu64" ticks\n", (1<<ITER_POWER),
+ printf("Time for %u iterations = %"PRIu64" ticks\n", (1<<ITER_POWER_CL),
end_time-start_time);
printf("Ticks per iteration = %"PRIu64"\n\n",
- (end_time-start_time) >> ITER_POWER);
+ (end_time-start_time) >> ITER_POWER_CL);
}
-/* returns the total count of the number of packets handled by the worker
+/*
+ * returns the total count of the number of packets handled by the worker
* functions given below.
*/
static unsigned
memset(&worker_stats, 0, sizeof(worker_stats));
}
-/* this is the basic worker function for performance tests.
+/*
+ * This is the basic worker function for performance tests.
* it does nothing but return packets and count them.
*/
static int
handle_work(void *arg)
{
- struct rte_mbuf *pkt = NULL;
struct rte_distributor *d = arg;
- unsigned count = 0;
- unsigned id = __sync_fetch_and_add(&worker_idx, 1);
+ unsigned int count = 0;
+ unsigned int num = 0;
+ int i;
+ unsigned int id = __sync_fetch_and_add(&worker_idx, 1);
+ struct rte_mbuf *buf[8] __rte_cache_aligned;
- pkt = rte_distributor_get_pkt(d, id, NULL);
+ for (i = 0; i < 8; i++)
+ buf[i] = NULL;
+
+ num = rte_distributor_get_pkt(d, id, buf, buf, num);
while (!quit) {
- worker_stats[id].handled_packets++, count++;
- pkt = rte_distributor_get_pkt(d, id, pkt);
+ worker_stats[id].handled_packets += num;
+ count += num;
+ num = rte_distributor_get_pkt(d, id, buf, buf, num);
}
- worker_stats[id].handled_packets++, count++;
- rte_distributor_return_pkt(d, id, pkt);
+ worker_stats[id].handled_packets += num;
+ count += num;
+ rte_distributor_return_pkt(d, id, buf, num);
return 0;
}
-/* this basic performance test just repeatedly sends in 32 packets at a time
+/*
+ * This basic performance test just repeatedly sends in 32 packets at a time
* to the distributor and verifies at the end that we got them all in the worker
* threads and finally how long per packet the processing took.
*/
static inline int
perf_test(struct rte_distributor *d, struct rte_mempool *p)
{
- unsigned i;
+ unsigned int i;
uint64_t start, end;
struct rte_mbuf *bufs[BURST];
rte_distributor_process(d, NULL, 0);
} while (total_packet_count() < (BURST << ITER_POWER));
- printf("=== Performance test of distributor ===\n");
+ rte_distributor_clear_returns(d);
+
printf("Time per burst: %"PRIu64"\n", (end - start) >> ITER_POWER);
printf("Time per packet: %"PRIu64"\n\n",
((end - start) >> ITER_POWER)/BURST);
static void
quit_workers(struct rte_distributor *d, struct rte_mempool *p)
{
- const unsigned num_workers = rte_lcore_count() - 1;
- unsigned i;
+ const unsigned int num_workers = rte_lcore_count() - 1;
+ unsigned int i;
struct rte_mbuf *bufs[RTE_MAX_LCORE];
+
rte_mempool_get_bulk(p, (void *)bufs, num_workers);
quit = 1;
static int
test_distributor_perf(void)
{
- static struct rte_distributor *d;
+ static struct rte_distributor *ds;
+ static struct rte_distributor *db;
static struct rte_mempool *p;
if (rte_lcore_count() < 2) {
/* first time how long it takes to round-trip a cache line */
time_cache_line_switch();
- if (d == NULL) {
- d = rte_distributor_create("Test_perf", rte_socket_id(),
- rte_lcore_count() - 1);
- if (d == NULL) {
+ if (ds == NULL) {
+ ds = rte_distributor_create("Test_perf", rte_socket_id(),
+ rte_lcore_count() - 1,
+ RTE_DIST_ALG_SINGLE);
+ if (ds == NULL) {
printf("Error creating distributor\n");
return -1;
}
} else {
- rte_distributor_flush(d);
- rte_distributor_clear_returns(d);
+ rte_distributor_clear_returns(ds);
+ }
+
+ if (db == NULL) {
+ db = rte_distributor_create("Test_burst", rte_socket_id(),
+ rte_lcore_count() - 1,
+ RTE_DIST_ALG_BURST);
+ if (db == NULL) {
+ printf("Error creating burst distributor\n");
+ return -1;
+ }
+ } else {
+ rte_distributor_clear_returns(db);
}
const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
}
}
- rte_eal_mp_remote_launch(handle_work, d, SKIP_MASTER);
- if (perf_test(d, p) < 0)
+ printf("=== Performance test of distributor (single mode) ===\n");
+ rte_eal_mp_remote_launch(handle_work, ds, SKIP_MASTER);
+ if (perf_test(ds, p) < 0)
+ return -1;
+ quit_workers(ds, p);
+
+ printf("=== Performance test of distributor (burst mode) ===\n");
+ rte_eal_mp_remote_launch(handle_work, db, SKIP_MASTER);
+ if (perf_test(db, p) < 0)
return -1;
- quit_workers(d, p);
+ quit_workers(db, p);
return 0;
}
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