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Diffstat (limited to 'app/test/test_pmd_ring_perf.c')
| -rw-r--r-- | app/test/test_pmd_ring_perf.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/app/test/test_pmd_ring_perf.c b/app/test/test_pmd_ring_perf.c deleted file mode 100644 index af011f7d..00000000 --- a/app/test/test_pmd_ring_perf.c +++ /dev/null @@ -1,184 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2015 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - - -#include <stdio.h> -#include <inttypes.h> -#include <rte_ring.h> -#include <rte_cycles.h> -#include <rte_launch.h> -#include <rte_ethdev.h> -#include <rte_eth_ring.h> - -#include "test.h" - -#define RING_NAME "RING_PERF" -#define RING_SIZE 4096 -#define MAX_BURST 32 - -/* - * the sizes to enqueue and dequeue in testing - * (marked volatile so they won't be seen as compile-time constants) - */ -static const volatile unsigned bulk_sizes[] = { 1, 8, 32 }; - -/* The ring structure used for tests */ -static struct rte_ring *r; -static uint8_t ring_ethdev_port; - -/* Get cycle counts for dequeuing from an empty ring. Should be 2 or 3 cycles */ -static void -test_empty_dequeue(void) -{ - const unsigned iter_shift = 26; - const unsigned iterations = 1 << iter_shift; - unsigned i = 0; - void *burst[MAX_BURST]; - - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - rte_ring_sc_dequeue_bulk(r, burst, bulk_sizes[0]); - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t eth_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - rte_eth_rx_burst(ring_ethdev_port, 0, (void *)burst, - bulk_sizes[0]); - const uint64_t eth_end = rte_rdtsc(); - - printf("Ring empty dequeue : %.1F\n", - (double)(sc_end - sc_start) / iterations); - printf("Ethdev empty dequeue: %.1F\n", - (double)(eth_end - eth_start) / iterations); -} - -/* - * Test function that determines how long an enqueue + dequeue of a single item - * takes on a single lcore. Result is for comparison with the bulk enq+deq. - */ -static void -test_single_enqueue_dequeue(void) -{ - const unsigned iter_shift = 24; - const unsigned iterations = 1 << iter_shift; - unsigned i = 0; - void *burst = NULL; - struct rte_mbuf *mburst[1] = { NULL }; - - const uint64_t sc_start = rte_rdtsc_precise(); - rte_compiler_barrier(); - for (i = 0; i < iterations; i++) { - rte_ring_enqueue_bulk(r, &burst, 1); - rte_ring_dequeue_bulk(r, &burst, 1); - } - const uint64_t sc_end = rte_rdtsc_precise(); - rte_compiler_barrier(); - - const uint64_t eth_start = rte_rdtsc_precise(); - rte_compiler_barrier(); - for (i = 0; i < iterations; i++) { - rte_eth_tx_burst(ring_ethdev_port, 0, mburst, 1); - rte_eth_rx_burst(ring_ethdev_port, 0, mburst, 1); - } - const uint64_t eth_end = rte_rdtsc_precise(); - rte_compiler_barrier(); - - printf("Ring single enq/dequeue : %"PRIu64"\n", - (sc_end-sc_start) >> iter_shift); - printf("Ethdev single enq/dequeue: %"PRIu64"\n", - (eth_end-eth_start) >> iter_shift); -} - -/* Times enqueue and dequeue on a single lcore */ -static void -test_bulk_enqueue_dequeue(void) -{ - const unsigned iter_shift = 23; - const unsigned iterations = 1 << iter_shift; - unsigned sz, i = 0; - struct rte_mbuf *burst[MAX_BURST] = {0}; - - for (sz = 0; sz < sizeof(bulk_sizes)/sizeof(bulk_sizes[0]); sz++) { - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_sp_enqueue_bulk(r, (void *)burst, bulk_sizes[sz]); - rte_ring_sc_dequeue_bulk(r, (void *)burst, bulk_sizes[sz]); - } - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t eth_start = rte_rdtsc_precise(); - rte_compiler_barrier(); - for (i = 0; i < iterations; i++) { - rte_eth_tx_burst(ring_ethdev_port, 0, burst, bulk_sizes[sz]); - rte_eth_rx_burst(ring_ethdev_port, 0, burst, bulk_sizes[sz]); - } - const uint64_t eth_end = rte_rdtsc_precise(); - rte_compiler_barrier(); - - double sc_avg = ((double)(sc_end-sc_start) / - (iterations * bulk_sizes[sz])); - double eth_avg = ((double)(eth_end-eth_start) / - (iterations * bulk_sizes[sz])); - - printf("ring bulk enq/deq (size: %u) : %.1F\n", bulk_sizes[sz], - sc_avg); - printf("ethdev bulk enq/deq (size:%u): %.1F\n", bulk_sizes[sz], - eth_avg); - - printf("\n"); - } -} - -static int -test_ring_pmd_perf(void) -{ - r = rte_ring_create(RING_NAME, RING_SIZE, rte_socket_id(), - RING_F_SP_ENQ|RING_F_SC_DEQ); - if (r == NULL && (r = rte_ring_lookup(RING_NAME)) == NULL) - return -1; - - ring_ethdev_port = rte_eth_from_ring(r); - - printf("\n### Testing const single element enq/deq ###\n"); - test_single_enqueue_dequeue(); - - printf("\n### Testing empty dequeue ###\n"); - test_empty_dequeue(); - - printf("\n### Testing using a single lcore ###\n"); - test_bulk_enqueue_dequeue(); - - return 0; -} - -REGISTER_TEST_COMMAND(ring_pmd_perf_autotest, test_ring_pmd_perf); |