1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms 5 * of the Common Development and Distribution License 6 * (the "License"). You may not use this file except 7 * in compliance with the License. 8 * 9 * You can obtain a copy of the license at 10 * src/OPENSOLARIS.LICENSE 11 * or http://www.opensolaris.org/os/licensing. 12 * See the License for the specific language governing 13 * permissions and limitations under the License. 14 * 15 * When distributing Covered Code, include this CDDL 16 * HEADER in each file and include the License file at 17 * usr/src/OPENSOLARIS.LICENSE. If applicable, 18 * add the following below this CDDL HEADER, with the 19 * fields enclosed by brackets "[]" replaced with your 20 * own identifying information: Portions Copyright [yyyy] 21 * [name of copyright owner] 22 * 23 * CDDL HEADER END 24 */ 25 26/* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31/* 32 * memory access time check 33 */ 34 35#include <unistd.h> 36#include <stdlib.h> 37#include <stdio.h> 38#include <fcntl.h> 39#include <string.h> 40 41#include "libmicro.h" 42 43static long opts = 1024*1024; 44 45typedef struct { 46 long **ts_data; 47 long ts_result; 48} tsd_t; 49 50int 51benchmark_init() 52{ 53 lm_tsdsize = sizeof (tsd_t); 54 55 (void) sprintf(lm_optstr, "s:"); 56 57 (void) sprintf(lm_usage, 58 " [-s size] number of bytes to " 59 " access (default %ld)\n" 60 "notes: measures \"random\" memory access times\n", 61 opts); 62 63 (void) sprintf(lm_header, "%8s", "size"); 64 65 return (0); 66} 67 68int 69benchmark_optswitch(int opt, char *optarg) 70{ 71 switch (opt) { 72 case 's': 73 opts = sizetoint(optarg); 74 break; 75 default: 76 return (-1); 77 } 78 79 return (0); 80} 81 82int 83benchmark_initworker(void *tsd) 84{ 85 tsd_t *ts = (tsd_t *)tsd; 86 int i, j; 87 88 ts->ts_data = malloc(opts); 89 90 if (ts->ts_data == NULL) { 91 return (1); 92 } 93 94 /* 95 * use lmbench style backwards stride 96 */ 97 98 for (i = 0; i < opts / sizeof (long); i++) { 99 j = i - 128; 100 if (j < 0) 101 j = j + opts / sizeof (long); 102 ts->ts_data[i] = (long *)&(ts->ts_data[j]); 103 } 104 return (0); 105} 106 107int 108benchmark(void *tsd, result_t *res) 109{ 110 tsd_t *ts = (tsd_t *)tsd; 111 int i; 112 113 long **ptr = ts->ts_data; 114 115 116 117 for (i = 0; i < lm_optB; i += 10) { 118 ptr = (long **)*ptr; 119 ptr = (long **)*ptr; 120 ptr = (long **)*ptr; 121 ptr = (long **)*ptr; 122 ptr = (long **)*ptr; 123 ptr = (long **)*ptr; 124 ptr = (long **)*ptr; 125 ptr = (long **)*ptr; 126 ptr = (long **)*ptr; 127 ptr = (long **)*ptr; 128 } 129 130 ts->ts_result = (long)*ptr; 131 132 res->re_count = i; 133 134 return (0); 135} 136 137char * 138benchmark_result() 139{ 140 static char result[256]; 141 142 (void) sprintf(result, "%8ld ", opts); 143 144 145 return (result); 146} 147