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94 lines
2.1 KiB
94 lines
2.1 KiB
#include <ck_ring.h>
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#include <inttypes.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "../../common.h"
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#ifndef ITERATIONS
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#define ITERATIONS (128000)
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#endif
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struct entry {
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int tid;
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int value;
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};
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int
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main(int argc, char *argv[])
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{
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int i, r, size;
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uint64_t s, e, e_a, d_a;
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struct entry entry = {0, 0};
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ck_ring_buffer_t *buf;
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ck_ring_t ring;
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if (argc != 2) {
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ck_error("Usage: latency <size>\n");
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}
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size = atoi(argv[1]);
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if (size <= 4 || (size & (size - 1))) {
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ck_error("ERROR: Size must be a power of 2 greater than 4.\n");
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}
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buf = malloc(sizeof(ck_ring_buffer_t) * size);
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if (buf == NULL) {
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ck_error("ERROR: Failed to allocate buffer\n");
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}
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ck_ring_init(&ring, size);
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e_a = d_a = s = e = 0;
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for (r = 0; r < ITERATIONS; r++) {
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for (i = 0; i < size / 4; i += 4) {
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s = rdtsc();
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ck_ring_enqueue_spsc(&ring, buf, &entry);
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ck_ring_enqueue_spsc(&ring, buf, &entry);
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ck_ring_enqueue_spsc(&ring, buf, &entry);
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ck_ring_enqueue_spsc(&ring, buf, &entry);
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e = rdtsc();
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}
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e_a += (e - s) / 4;
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for (i = 0; i < size / 4; i += 4) {
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s = rdtsc();
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ck_ring_dequeue_spsc(&ring, buf, &entry);
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ck_ring_dequeue_spsc(&ring, buf, &entry);
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ck_ring_dequeue_spsc(&ring, buf, &entry);
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ck_ring_dequeue_spsc(&ring, buf, &entry);
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e = rdtsc();
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}
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d_a += (e - s) / 4;
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}
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printf("spsc %10d %16" PRIu64 " %16" PRIu64 "\n", size, e_a / ITERATIONS, d_a / ITERATIONS);
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e_a = d_a = s = e = 0;
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for (r = 0; r < ITERATIONS; r++) {
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for (i = 0; i < size / 4; i += 4) {
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s = rdtsc();
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ck_ring_enqueue_spmc(&ring, buf, &entry);
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ck_ring_enqueue_spmc(&ring, buf, &entry);
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ck_ring_enqueue_spmc(&ring, buf, &entry);
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ck_ring_enqueue_spmc(&ring, buf, &entry);
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e = rdtsc();
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}
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e_a += (e - s) / 4;
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for (i = 0; i < size / 4; i += 4) {
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s = rdtsc();
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ck_ring_dequeue_spmc(&ring, buf, &entry);
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ck_ring_dequeue_spmc(&ring, buf, &entry);
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ck_ring_dequeue_spmc(&ring, buf, &entry);
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ck_ring_dequeue_spmc(&ring, buf, &entry);
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e = rdtsc();
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}
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d_a += (e - s) / 4;
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}
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printf("spmc %10d %16" PRIu64 " %16" PRIu64 "\n", size, e_a / ITERATIONS, d_a / ITERATIONS);
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return (0);
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}
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