1#!/usr/bin/sh 2# 3# xvmstat - extended vmstat demo in DTrace. 4# Written using DTrace (Solaris 10 3/05). 5# 6# This has been written to demonstrate fetching similar data as vmstat 7# from DTrace, with a few extra fields. 8# 9# 01-Mar-2006, ver 0.85 10# 11# USAGE: xvmstat [interval [count]] 12# 13# FIELDS: 14# w swapped out LWPs number 15# swap virtual memory free Mbytes 16# free free RAM Mbytes 17# re page reclaims pages/sec 18# maj major faults pages/sec 19# mf minor faults pages/sec 20# cow copy-on-write faults pages/sec 21# pro protection faults pages/sec 22# sr scan rate pages/sec 23# epi executable page ins pages/sec 24# epo executable page outs pages/sec 25# epf executable frees pages/sec 26# api anonymous page ins pages/sec 27# apo anonymous page outs pages/sec 28# apf anonymous frees pages/sec 29# fpi filesystem page ins pages/sec 30# fpo filesystem page outs pages/sec 31# fpf filesystem frees pages/sec 32# 33# NOTES: 34# - Most of the statistics are in units of pages, unlike the 35# original vmstat command which sometimes uses kilobytes. 36# - As this program does not use Kstat, there is no summary since boot line. 37# - Free RAM is both free free + cache free. 38# 39# SEE ALSO: vmstat(1M) 40# 41# COPYRIGHT: Copyright (c) 2005 Brendan Gregg. 42# 43# CDDL HEADER START 44# 45# The contents of this file are subject to the terms of the 46# Common Development and Distribution License, Version 1.0 only 47# (the "License"). You may not use this file except in compliance 48# with the License. 49# 50# You can obtain a copy of the license at Docs/cddl1.txt 51# or http://www.opensolaris.org/os/licensing. 52# See the License for the specific language governing permissions 53# and limitations under the License. 54# 55# CDDL HEADER END 56# 57# 12-Jun-2005 Brendan Gregg Created this. 58# 59 60############################## 61# --- Process Arguments --- 62# 63 64### default values 65interval=1; count=-1 66 67### check arguments 68if [ "$1" = "-h" -o "$1" = "--help" ]; then 69 cat <<-END >&2 70 USAGE: xvmstat [interval [count]] 71 xvmstat # 1 second samples, infinite 72 eg, 73 xvmstat 1 # print every 1 second 74 xvmstat 5 6 # print every 5 seconds, 6 times 75 END 76 exit 1 77fi 78 79### argument logic 80if [ "$1" -gt 0 ]; then 81 interval=$1; count=-1; shift 82fi 83if [ "$1" -gt 0 ]; then 84 count=$1; shift 85fi 86if [ $interval -eq 0 ]; then 87 interval=1 88fi 89 90 91################################# 92# --- Main Program, DTrace --- 93# 94/usr/sbin/dtrace -n ' 95 #pragma D option quiet 96 97 /* 98 * Command line arguments 99 */ 100 inline int INTERVAL = '$interval'; 101 inline int COUNTER = '$count'; 102 inline int SCREEN = 21; 103 104 /* 105 * Initialise variables 106 */ 107 dtrace:::BEGIN 108 { 109 re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0; 110 epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0; 111 fpi = 0; fpo = 0; fpf = 0; 112 lines = SCREEN + 1; 113 counts = COUNTER; 114 secs = INTERVAL; 115 first = 1; 116 } 117 118 profile:::tick-1sec 119 { 120 secs--; 121 } 122 123 /* 124 * Print header 125 */ 126 dtrace:::BEGIN, 127 profile:::tick-1sec 128 /first || (secs == 0 && lines > SCREEN)/ 129 { 130 printf("%2s %6s %5s %5s %3s %4s %3s %3s %3s ", 131 "w", "swap", "free", "re", "maj", "mf", "cow", "pro", "sr"); 132 printf("%3s %3s %3s %3s %3s %3s %3s %3s %3s\n", 133 "epi", "epo", "epf", "api", "apo", "apf", "fpi", "fpo", "fpf"); 134 lines = 0; 135 first = 0; 136 } 137 138 /* 139 * Probe events 140 */ 141 vminfo:::pgrec { re += arg0; } 142 vminfo:::scan { sr += arg0; } 143 vminfo:::as_fault { mf += arg0; } 144 vminfo:::execpgin { epi += arg0; } 145 vminfo:::execpgout { epo += arg0; } 146 vminfo:::execfree { epf += arg0; } 147 vminfo:::anonpgin { api += arg0; } 148 vminfo:::anonpgout { apo += arg0; } 149 vminfo:::anonfree { apf += arg0; } 150 vminfo:::fspgin { fpi += arg0; } 151 vminfo:::fspgout { fpo += arg0; } 152 vminfo:::fsfree { fpf += arg0; } 153 vminfo:::maj_fault { maj += arg0; } 154 vminfo:::cow_fault { cow += arg0; } 155 vminfo:::prot_fault { pro += arg0; } 156 157 /* 158 * Print output line 159 */ 160 profile:::tick-1sec 161 /secs == 0/ 162 { 163 /* fetch free mem */ 164 this->free = `freemem; 165 166 /* 167 * fetch free swap 168 * 169 * free swap is described in /usr/include/vm/anon.h as, 170 * MAX(ani_max - ani_resv, 0) + (availrmem - swapfs_minfree) 171 */ 172 this->ani_max = `k_anoninfo.ani_max; 173 this->ani_resv = `k_anoninfo.ani_phys_resv + `k_anoninfo.ani_mem_resv; 174 this->swap = (this->ani_max - this->ani_resv > 0 ? 175 this->ani_max - this->ani_resv : 0) + `availrmem - `swapfs_minfree; 176 177 /* fetch w */ 178 this->w = `nswapped; 179 180 /* convert to Mbytes */ 181 this->swap *= `_pagesize; this->swap /= 1048576; 182 this->free *= `_pagesize; this->free /= 1048576; 183 184 /* convert to per second values */ 185 re /= INTERVAL; maj /= INTERVAL; mf /= INTERVAL; 186 cow /= INTERVAL; pro /= INTERVAL; sr /= INTERVAL; 187 epi /= INTERVAL; epo /= INTERVAL; epf /= INTERVAL; 188 api /= INTERVAL; apo /= INTERVAL; apf /= INTERVAL; 189 fpi /= INTERVAL; fpo /= INTERVAL; fpf /= INTERVAL; 190 191 /* print line */ 192 printf("%2d %6d %5d %5d %3d %4d %3d %3d %3d ", 193 this->w, this->swap, this->free, re, maj, mf, cow, pro, sr); 194 printf("%3d %3d %3d %3d %3d %3d %3d %3d %3d\n", 195 epi, epo, epf, api, apo, apf, fpi, fpo, fpf); 196 197 /* clear counters */ 198 re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0; 199 epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0; 200 fpi = 0; fpo = 0; fpf = 0; 201 202 /* process counts */ 203 secs = INTERVAL; 204 counts--; 205 lines++; 206 } 207 208 /* 209 * End 210 */ 211 profile:::tick-1sec 212 /counts == 0/ 213 { 214 exit(0); 215 } 216' 217