+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 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 "test.h"
-
-#include <stdio.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <rte_cycles.h>
-#include <rte_timer.h>
-#include <rte_common.h>
-#include <rte_lcore.h>
-#include <rte_random.h>
-#include <rte_malloc.h>
-
-#define MAX_ITERATIONS 1000000
-
-int outstanding_count = 0;
-
-static void
-timer_cb(struct rte_timer *t __rte_unused, void *param __rte_unused)
-{
- outstanding_count--;
-}
-
-#define DELAY_SECONDS 1
-
-#ifdef RTE_EXEC_ENV_LINUXAPP
-#define do_delay() usleep(10)
-#else
-#define do_delay() rte_pause()
-#endif
-
-static int
-test_timer_perf(void)
-{
- unsigned iterations = 100;
- unsigned i;
- struct rte_timer *tms;
- uint64_t start_tsc, end_tsc, delay_start;
- unsigned lcore_id = rte_lcore_id();
-
- tms = rte_malloc(NULL, sizeof(*tms) * MAX_ITERATIONS, 0);
-
- for (i = 0; i < MAX_ITERATIONS; i++)
- rte_timer_init(&tms[i]);
-
- const uint64_t ticks = rte_get_timer_hz() * DELAY_SECONDS;
- const uint64_t ticks_per_ms = rte_get_tsc_hz()/1000;
- const uint64_t ticks_per_us = ticks_per_ms/1000;
-
- while (iterations <= MAX_ITERATIONS) {
-
- printf("Appending %u timers\n", iterations);
- start_tsc = rte_rdtsc();
- for (i = 0; i < iterations; i++)
- rte_timer_reset(&tms[i], ticks, SINGLE, lcore_id,
- timer_cb, NULL);
- end_tsc = rte_rdtsc();
- printf("Time for %u timers: %"PRIu64" (%"PRIu64"ms), ", iterations,
- end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
- printf("Time per timer: %"PRIu64" (%"PRIu64"us)\n",
- (end_tsc-start_tsc)/iterations,
- ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
- outstanding_count = iterations;
- delay_start = rte_get_timer_cycles();
- while (rte_get_timer_cycles() < delay_start + ticks)
- do_delay();
-
- start_tsc = rte_rdtsc();
- while (outstanding_count)
- rte_timer_manage();
- end_tsc = rte_rdtsc();
- printf("Time for %u callbacks: %"PRIu64" (%"PRIu64"ms), ", iterations,
- end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
- printf("Time per callback: %"PRIu64" (%"PRIu64"us)\n",
- (end_tsc-start_tsc)/iterations,
- ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
-
- printf("Resetting %u timers\n", iterations);
- start_tsc = rte_rdtsc();
- for (i = 0; i < iterations; i++)
- rte_timer_reset(&tms[i], rte_rand() % ticks, SINGLE, lcore_id,
- timer_cb, NULL);
- end_tsc = rte_rdtsc();
- printf("Time for %u timers: %"PRIu64" (%"PRIu64"ms), ", iterations,
- end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
- printf("Time per timer: %"PRIu64" (%"PRIu64"us)\n",
- (end_tsc-start_tsc)/iterations,
- ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
- outstanding_count = iterations;
-
- delay_start = rte_get_timer_cycles();
- while (rte_get_timer_cycles() < delay_start + ticks)
- do_delay();
-
- rte_timer_manage();
- if (outstanding_count != 0) {
- printf("Error: outstanding callback count = %d\n", outstanding_count);
- return -1;
- }
-
- iterations *= 10;
- printf("\n");
- }
-
- printf("All timers processed ok\n");
-
- /* measure time to poll an empty timer list */
- start_tsc = rte_rdtsc();
- for (i = 0; i < iterations; i++)
- rte_timer_manage();
- end_tsc = rte_rdtsc();
- printf("\nTime per rte_timer_manage with zero timers: %"PRIu64" cycles\n",
- (end_tsc - start_tsc + iterations/2) / iterations);
-
- /* measure time to poll a timer list with timers, but without
- * calling any callbacks */
- rte_timer_reset(&tms[0], ticks * 100, SINGLE, lcore_id,
- timer_cb, NULL);
- start_tsc = rte_rdtsc();
- for (i = 0; i < iterations; i++)
- rte_timer_manage();
- end_tsc = rte_rdtsc();
- printf("Time per rte_timer_manage with zero callbacks: %"PRIu64" cycles\n",
- (end_tsc - start_tsc + iterations/2) / iterations);
-
- return 0;
-}
-
-REGISTER_TEST_COMMAND(timer_perf_autotest, test_timer_perf);
git.droids-corp.org / dpdk.git / blobdiff