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 # $Id: xvmstat,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ 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 # 01-Mar-2006 " " Last update. 59 # 60 61 ############################## 62 # --- Process Arguments --- 63 # 64 65 ### default values 66 interval=1; count=-1 67 68 ### check arguments 69 if [ "$1" = "-h" -o "$1" = "--help" ]; then 70 cat <<-END >&2 71 USAGE: xvmstat [interval [count]] 72 xvmstat # 1 second samples, infinite 73 eg, 74 xvmstat 1 # print every 1 second 75 xvmstat 5 6 # print every 5 seconds, 6 times 76 END 77 exit 1 78 fi 79 80 ### argument logic 81 if [ "$1" -gt 0 ]; then 82 interval=$1; count=-1; shift 83 fi 84 if [ "$1" -gt 0 ]; then 85 count=$1; shift 86 fi 87 if [ $interval -eq 0 ]; then 88 interval=1 89 fi 90 91 92 ################################# 93 # --- Main Program, DTrace --- 94 # 95 /usr/sbin/dtrace -n ' 96 #pragma D option quiet 97 98 /* 99 * Command line arguments 100 */ 101 inline int INTERVAL = '$interval'; 102 inline int COUNTER = '$count'; 103 inline int SCREEN = 21; 104 105 /* 106 * Initialise variables 107 */ 108 dtrace:::BEGIN 109 { 110 re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0; 111 epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0; 112 fpi = 0; fpo = 0; fpf = 0; 113 lines = SCREEN + 1; 114 counts = COUNTER; 115 secs = INTERVAL; 116 first = 1; 117 } 118 119 profile:::tick-1sec 120 { 121 secs--; 122 } 123 124 /* 125 * Print header 126 */ 127 dtrace:::BEGIN, 128 profile:::tick-1sec 129 /first || (secs == 0 && lines > SCREEN)/ 130 { 131 printf("%2s %6s %5s %5s %3s %4s %3s %3s %3s ", 132 "w", "swap", "free", "re", "maj", "mf", "cow", "pro", "sr"); 133 printf("%3s %3s %3s %3s %3s %3s %3s %3s %3s\n", 134 "epi", "epo", "epf", "api", "apo", "apf", "fpi", "fpo", "fpf"); 135 lines = 0; 136 first = 0; 137 } 138 139 /* 140 * Probe events 141 */ 142 vminfo:::pgrec { re += arg0; } 143 vminfo:::scan { sr += arg0; } 144 vminfo:::as_fault { mf += arg0; } 145 vminfo:::execpgin { epi += arg0; } 146 vminfo:::execpgout { epo += arg0; } 147 vminfo:::execfree { epf += arg0; } 148 vminfo:::anonpgin { api += arg0; } 149 vminfo:::anonpgout { apo += arg0; } 150 vminfo:::anonfree { apf += arg0; } 151 vminfo:::fspgin { fpi += arg0; } 152 vminfo:::fspgout { fpo += arg0; } 153 vminfo:::fsfree { fpf += arg0; } 154 vminfo:::maj_fault { maj += arg0; } 155 vminfo:::cow_fault { cow += arg0; } 156 vminfo:::prot_fault { pro += arg0; } 157 158 /* 159 * Print output line 160 */ 161 profile:::tick-1sec 162 /secs == 0/ 163 { 164 /* fetch free mem */ 165 this->free = `freemem; 166 167 /* 168 * fetch free swap 169 * 170 * free swap is described in /usr/include/vm/anon.h as, 171 * MAX(ani_max - ani_resv, 0) + (availrmem - swapfs_minfree) 172 */ 173 this->ani_max = `k_anoninfo.ani_max; 174 this->ani_resv = `k_anoninfo.ani_phys_resv + `k_anoninfo.ani_mem_resv; 175 this->swap = (this->ani_max - this->ani_resv > 0 ? 176 this->ani_max - this->ani_resv : 0) + `availrmem - `swapfs_minfree; 177 178 /* fetch w */ 179 this->w = `nswapped; 180 181 /* convert to Mbytes */ 182 this->swap *= `_pagesize; this->swap /= 1048576; 183 this->free *= `_pagesize; this->free /= 1048576; 184 185 /* convert to per second values */ 186 re /= INTERVAL; maj /= INTERVAL; mf /= INTERVAL; 187 cow /= INTERVAL; pro /= INTERVAL; sr /= INTERVAL; 188 epi /= INTERVAL; epo /= INTERVAL; epf /= INTERVAL; 189 api /= INTERVAL; apo /= INTERVAL; apf /= INTERVAL; 190 fpi /= INTERVAL; fpo /= INTERVAL; fpf /= INTERVAL; 191 192 /* print line */ 193 printf("%2d %6d %5d %5d %3d %4d %3d %3d %3d ", 194 this->w, this->swap, this->free, re, maj, mf, cow, pro, sr); 195 printf("%3d %3d %3d %3d %3d %3d %3d %3d %3d\n", 196 epi, epo, epf, api, apo, apf, fpi, fpo, fpf); 197 198 /* clear counters */ 199 re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0; 200 epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0; 201 fpi = 0; fpo = 0; fpf = 0; 202 203 /* process counts */ 204 secs = INTERVAL; 205 counts--; 206 lines++; 207 } 208 209 /* 210 * End 211 */ 212 profile:::tick-1sec 213 /counts == 0/ 214 { 215 exit(0); 216 } 217 ' 218
Indexes created Mon Jun 22 00:25:11 UTC 2026