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36 #ifdef RTE_LIBRTE_TIMER
40 #include <rte_cycles.h>
41 #include <rte_timer.h>
42 #include <rte_common.h>
43 #include <rte_lcore.h>
44 #include <rte_random.h>
45 #include <rte_malloc.h>
47 #define MAX_ITERATIONS 1000000
49 int outstanding_count = 0;
52 timer_cb(struct rte_timer *t __rte_unused, void *param __rte_unused)
57 #define DELAY_SECONDS 1
59 #ifdef RTE_EXEC_ENV_LINUXAPP
60 #define do_delay() usleep(10)
62 #define do_delay() rte_pause()
68 unsigned iterations = 100;
70 struct rte_timer *tms;
71 uint64_t start_tsc, end_tsc, delay_start;
72 unsigned lcore_id = rte_lcore_id();
74 tms = rte_malloc(NULL, sizeof(*tms) * MAX_ITERATIONS, 0);
76 for (i = 0; i < MAX_ITERATIONS; i++)
77 rte_timer_init(&tms[i]);
79 const uint64_t ticks = rte_get_timer_hz() * DELAY_SECONDS;
80 const uint64_t ticks_per_ms = rte_get_tsc_hz()/1000;
81 const uint64_t ticks_per_us = ticks_per_ms/1000;
83 while (iterations <= MAX_ITERATIONS) {
85 printf("Appending %u timers\n", iterations);
86 start_tsc = rte_rdtsc();
87 for (i = 0; i < iterations; i++)
88 rte_timer_reset(&tms[i], ticks, SINGLE, lcore_id,
90 end_tsc = rte_rdtsc();
91 printf("Time for %u timers: %"PRIu64" (%"PRIu64"ms), ", iterations,
92 end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
93 printf("Time per timer: %"PRIu64" (%"PRIu64"us)\n",
94 (end_tsc-start_tsc)/iterations,
95 ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
96 outstanding_count = iterations;
97 delay_start = rte_get_timer_cycles();
98 while (rte_get_timer_cycles() < delay_start + ticks)
101 start_tsc = rte_rdtsc();
102 while (outstanding_count)
104 end_tsc = rte_rdtsc();
105 printf("Time for %u callbacks: %"PRIu64" (%"PRIu64"ms), ", iterations,
106 end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
107 printf("Time per callback: %"PRIu64" (%"PRIu64"us)\n",
108 (end_tsc-start_tsc)/iterations,
109 ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
111 printf("Resetting %u timers\n", iterations);
112 start_tsc = rte_rdtsc();
113 for (i = 0; i < iterations; i++)
114 rte_timer_reset(&tms[i], rte_rand() % ticks, SINGLE, lcore_id,
116 end_tsc = rte_rdtsc();
117 printf("Time for %u timers: %"PRIu64" (%"PRIu64"ms), ", iterations,
118 end_tsc-start_tsc, (end_tsc-start_tsc+ticks_per_ms/2)/(ticks_per_ms));
119 printf("Time per timer: %"PRIu64" (%"PRIu64"us)\n",
120 (end_tsc-start_tsc)/iterations,
121 ((end_tsc-start_tsc)/iterations+ticks_per_us/2)/(ticks_per_us));
122 outstanding_count = iterations;
124 delay_start = rte_get_timer_cycles();
125 while (rte_get_timer_cycles() < delay_start + ticks)
129 if (outstanding_count != 0) {
130 printf("Error: outstanding callback count = %d\n", outstanding_count);
138 printf("All timers processed ok\n");
140 /* measure time to poll an empty timer list */
141 start_tsc = rte_rdtsc();
142 for (i = 0; i < iterations; i++)
144 end_tsc = rte_rdtsc();
145 printf("\nTime per rte_timer_manage with zero timers: %"PRIu64" cycles\n",
146 (end_tsc - start_tsc + iterations/2) / iterations);
148 /* measure time to poll a timer list with timers, but without
149 * calling any callbacks */
150 rte_timer_reset(&tms[0], ticks * 100, SINGLE, lcore_id,
152 start_tsc = rte_rdtsc();
153 for (i = 0; i < iterations; i++)
155 end_tsc = rte_rdtsc();
156 printf("Time per rte_timer_manage with zero callbacks: %"PRIu64" cycles\n",
157 (end_tsc - start_tsc + iterations/2) / iterations);
165 test_timer_perf(void)