325N/A#!/usr/bin/sh
325N/A#
325N/A# xvmstat - extended vmstat demo in DTrace.
325N/A# Written using DTrace (Solaris 10 3/05).
325N/A#
325N/A# This has been written to demonstrate fetching similar data as vmstat
325N/A# from DTrace, with a few extra fields.
325N/A#
325N/A# $Id: xvmstat 3 2007-08-01 10:50:08Z brendan $
325N/A#
325N/A# USAGE: xvmstat [interval [count]]
325N/A#
325N/A# FIELDS:
325N/A# w swapped out LWPs number
325N/A# swap virtual memory free Mbytes
325N/A# free free RAM Mbytes
325N/A# re page reclaims pages/sec
325N/A# maj major faults pages/sec
325N/A# mf minor faults pages/sec
325N/A# cow copy-on-write faults pages/sec
325N/A# pro protection faults pages/sec
325N/A# sr scan rate pages/sec
325N/A# epi executable page ins pages/sec
325N/A# epo executable page outs pages/sec
325N/A# epf executable frees pages/sec
325N/A# api anonymous page ins pages/sec
325N/A# apo anonymous page outs pages/sec
325N/A# apf anonymous frees pages/sec
325N/A# fpi filesystem page ins pages/sec
325N/A# fpo filesystem page outs pages/sec
325N/A# fpf filesystem frees pages/sec
325N/A#
325N/A# NOTES:
325N/A# - Most of the statistics are in units of pages, unlike the
325N/A# original vmstat command which sometimes uses kilobytes.
325N/A# - As this program does not use Kstat, there is no summary since boot line.
325N/A# - Free RAM is both free free + cache free.
325N/A#
325N/A# SEE ALSO: vmstat(1M)
325N/A#
325N/A# COPYRIGHT: Copyright (c) 2005 Brendan Gregg.
325N/A#
325N/A# CDDL HEADER START
325N/A#
325N/A# The contents of this file are subject to the terms of the
325N/A# Common Development and Distribution License, Version 1.0 only
325N/A# (the "License"). You may not use this file except in compliance
325N/A# with the License.
325N/A#
325N/A# You can obtain a copy of the license at Docs/cddl1.txt
325N/A# or http://www.opensolaris.org/os/licensing.
325N/A# See the License for the specific language governing permissions
325N/A# and limitations under the License.
325N/A#
325N/A# CDDL HEADER END
325N/A#
325N/A# 12-Jun-2005 Brendan Gregg Created this.
325N/A# 01-Mar-2006 " " Last update.
325N/A#
325N/A
325N/A##############################
325N/A# --- Process Arguments ---
325N/A#
325N/A
### default values
interval=1; count=-1
### check arguments
if [ "$1" = "-h" -o "$1" = "--help" ]; then
cat <<-END >&2
USAGE: xvmstat [interval [count]]
xvmstat # 1 second samples, infinite
eg,
xvmstat 1 # print every 1 second
xvmstat 5 6 # print every 5 seconds, 6 times
END
exit 1
fi
### argument logic
if [ "$1" -gt 0 ]; then
interval=$1; count=-1; shift
fi
if [ "$1" -gt 0 ]; then
count=$1; shift
fi
if [ $interval -eq 0 ]; then
interval=1
fi
#################################
# --- Main Program, DTrace ---
#
/usr/sbin/dtrace -n '
#pragma D option quiet
/*
* Command line arguments
*/
inline int INTERVAL = '$interval';
inline int COUNTER = '$count';
inline int SCREEN = 21;
/*
* Initialise variables
*/
dtrace:::BEGIN
{
re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0;
epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0;
fpi = 0; fpo = 0; fpf = 0;
lines = SCREEN + 1;
counts = COUNTER;
secs = INTERVAL;
first = 1;
}
profile:::tick-1sec
{
secs--;
}
/*
* Print header
*/
dtrace:::BEGIN,
profile:::tick-1sec
/first || (secs == 0 && lines > SCREEN)/
{
printf("%2s %6s %5s %5s %3s %4s %3s %3s %3s ",
"w", "swap", "free", "re", "maj", "mf", "cow", "pro", "sr");
printf("%3s %3s %3s %3s %3s %3s %3s %3s %3s\n",
"epi", "epo", "epf", "api", "apo", "apf", "fpi", "fpo", "fpf");
lines = 0;
first = 0;
}
/*
* Probe events
*/
vminfo:::pgrec { re += arg0; }
vminfo:::scan { sr += arg0; }
vminfo:::as_fault { mf += arg0; }
vminfo:::execpgin { epi += arg0; }
vminfo:::execpgout { epo += arg0; }
vminfo:::execfree { epf += arg0; }
vminfo:::anonpgin { api += arg0; }
vminfo:::anonpgout { apo += arg0; }
vminfo:::anonfree { apf += arg0; }
vminfo:::fspgin { fpi += arg0; }
vminfo:::fspgout { fpo += arg0; }
vminfo:::fsfree { fpf += arg0; }
vminfo:::maj_fault { maj += arg0; }
vminfo:::cow_fault { cow += arg0; }
vminfo:::prot_fault { pro += arg0; }
/*
* Print output line
*/
profile:::tick-1sec
/secs == 0/
{
/* fetch free mem */
this->free = `freemem;
/*
* fetch free swap
*
* free swap is described in /usr/include/vm/anon.h as,
* MAX(ani_max - ani_resv, 0) + (availrmem - swapfs_minfree)
*/
this->ani_max = `k_anoninfo.ani_max;
this->ani_resv = `k_anoninfo.ani_phys_resv + `k_anoninfo.ani_mem_resv;
this->swap = (this->ani_max - this->ani_resv > 0 ?
this->ani_max - this->ani_resv : 0) + `availrmem - `swapfs_minfree;
/* fetch w */
this->w = `nswapped;
/* convert to Mbytes */
this->swap *= `_pagesize; this->swap /= 1048576;
this->free *= `_pagesize; this->free /= 1048576;
/* convert to per second values */
re /= INTERVAL; maj /= INTERVAL; mf /= INTERVAL;
cow /= INTERVAL; pro /= INTERVAL; sr /= INTERVAL;
epi /= INTERVAL; epo /= INTERVAL; epf /= INTERVAL;
api /= INTERVAL; apo /= INTERVAL; apf /= INTERVAL;
fpi /= INTERVAL; fpo /= INTERVAL; fpf /= INTERVAL;
/* print line */
printf("%2d %6d %5d %5d %3d %4d %3d %3d %3d ",
this->w, this->swap, this->free, re, maj, mf, cow, pro, sr);
printf("%3d %3d %3d %3d %3d %3d %3d %3d %3d\n",
epi, epo, epf, api, apo, apf, fpi, fpo, fpf);
/* clear counters */
re = 0; sr = 0; mf = 0; maj = 0; cow = 0; pro = 0;
epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0;
fpi = 0; fpo = 0; fpf = 0;
/* process counts */
secs = INTERVAL;
counts--;
lines++;
}
/*
* End
*/
profile:::tick-1sec
/counts == 0/
{
exit(0);
}
'