app/test: add timer_perf

Signed-off-by: Intel

app/test/Makefile

@@ -92,6 +92,7 @@ SRCS-$(CONFIG_RTE_APP_TEST) += test_kni.c
 SRCS-$(CONFIG_RTE_APP_TEST) += test_pmac_acl.c
 SRCS-$(CONFIG_RTE_APP_TEST) += test_power.c
 SRCS-$(CONFIG_RTE_APP_TEST) += test_common.c
+SRCS-$(CONFIG_RTE_APP_TEST) += test_timer_perf.c
 
 CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS)

app/test/autotest_data.py

@@ -444,5 +444,17 @@ def all_sockets(num):
 		},
 	]
 },
-
+{
+	"Prefix":	"timer_perf",
+	"Memory" :	all_sockets(512),
+	"Tests" :	
+	[
+		{
+		 "Name" :	"Timer performance autotest",
+		 "Command" : 	"timer_perf_autotest",
+		 "Func" :	default_autotest,
+		 "Report" :	None,
+		},
+	]
+},
 ]

app/test/commands.c

@@ -160,6 +160,8 @@ static void cmd_autotest_parsed(void *parsed_result,
 		ret |= test_ring_perf();
 	if (all || !strcmp(res->autotest, "timer_autotest"))
 		ret |= test_timer();
+	if (all || !strcmp(res->autotest, "timer_perf_autotest"))
+		ret |= test_timer_perf();
 	if (all || !strcmp(res->autotest, "mempool_autotest"))
 		ret |= test_mempool();
 	if (all || !strcmp(res->autotest, "mempool_perf_autotest"))
@@ -214,6 +216,7 @@ cmdline_parse_token_string_t cmd_autotest_autotest =
 			"red_autotest#meter_autotest#sched_autotest#"
 			"memcpy_perf_autotest#kni_autotest#"
 			"pm_autotest#acl_autotest#power_autotest#"
+			"timer_perf_autotest#"
 			"common_autotest#all_autotests");
 
 cmdline_parse_inst_t cmd_autotest = {

app/test/test.h

@@ -64,6 +64,7 @@ int test_mempool(void);
 int test_mempool_perf(void);
 int test_mbuf(void);
 int test_timer(void);
+int test_timer_perf(void);
 int test_malloc(void);
 int test_memcpy(void);
 int test_memcpy_perf(void);

app/test/test_timer_perf.c

@@ -0,0 +1,158 @@
+/*-
+ *   BSD LICENSE
+ * 
+ *   Copyright(c) 2010-2013 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 <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>
+#include "test.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
+
+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;
+}