156 lines
4.2 KiB
D
Executable File
156 lines
4.2 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* vmstat-p.d - vmstat -p demo in DTrace.
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* Written using DTrace (Solaris 10 3/05).
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*
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* This has been written to demonstrate fetching similar data as vmstat
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* from DTrace. This program is intended as a starting point for other
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* DTrace scripts, by beginning with familiar statistics.
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*
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* $Id: vmstat-p.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $
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*
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* USAGE: vmstat-p.d
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*
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* FIELDS:
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* swap virtual memory free Kbytes
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* free free RAM Kbytes
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* re page reclaims Kbytes
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* mf minor faults Kbytes
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* sr scan rate pages
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* epi executable page ins Kbytes
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* epo executable page outs Kbytes
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* epf executable frees Kbytes
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* api anonymous page ins Kbytes
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* apo anonymous page outs Kbytes
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* apf anonymous frees Kbytes
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* fpi filesystem page ins Kbytes
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* fpo filesystem page outs Kbytes
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* fpf filesystem frees Kbytes
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*
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* NOTES:
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* Most of the statistics are in units of kilobytes, unlike the
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* original vmstat command which sometimes uses page counts.
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* As this program does not use Kstat, there is no summary since
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* boot line. Free RAM is both free free + cache free.
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*
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* SEE ALSO: vmstat(1M)
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*
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* COPYRIGHT: Copyright (c) 2005 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* 11-Jun-2005 Brendan Gregg Created this.
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* 08-Jan-2006 " " Last update.
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*/
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#pragma D option quiet
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inline int SCREEN = 21;
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/*
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* Initialise variables
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*/
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dtrace:::BEGIN
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{
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pi = 0; po = 0; re = 0; sr = 0; mf = 0; fr = 0;
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sy = 0; in = 0; cs = 0; maj = 0; cow = 0; pro = 0;
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epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0;
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fpi = 0; fpo = 0; fpf = 0;
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lines = SCREEN + 1;
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}
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/*
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* Print header
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*/
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dtrace:::BEGIN,
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tick-1sec
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/lines++ > SCREEN/
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{
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printf("%14s %13s %16s %14s %13s\n",
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"memory", "page", "executable", "anonymous", "filesystem");
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printf("%9s %7s %5s %4s %3s ",
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"swap", "free", "re", "mf", "sr");
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printf("%4s %4s %4s %4s %4s %4s %4s %4s %4s\n",
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"epi", "epo", "epf", "api", "apo", "apf", "fpi", "fpo", "fpf");
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lines = 0;
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}
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/*
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* Probe events
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*/
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vminfo:::pgrec { re += arg0; }
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vminfo:::scan { sr += arg0; }
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vminfo:::as_fault { mf += arg0; }
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vminfo:::execpgin { epi += arg0; }
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vminfo:::execpgout { epo += arg0; }
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vminfo:::execfree { epf += arg0; }
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vminfo:::anonpgin { api += arg0; }
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vminfo:::anonpgout { apo += arg0; }
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vminfo:::anonfree { apf += arg0; }
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vminfo:::fspgin { fpi += arg0; }
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vminfo:::fspgout { fpo += arg0; }
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vminfo:::fsfree { fpf += arg0; }
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/*
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* Print output line
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*/
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profile:::tick-1sec
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{
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/* fetch free mem */
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this->free = `freemem;
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/*
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* fetch free swap
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*
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* free swap is described in /usr/include/vm/anon.h as,
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* MAX(ani_max - ani_resv, 0) + (availrmem - swapfs_minfree)
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*/
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this->ani_max = `k_anoninfo.ani_max;
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this->ani_resv = `k_anoninfo.ani_phys_resv + `k_anoninfo.ani_mem_resv;
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this->swap = (this->ani_max - this->ani_resv > 0 ?
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this->ani_max - this->ani_resv : 0) + `availrmem - `swapfs_minfree;
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/* fetch w */
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this->w = `nswapped;
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/* convert to Kbytes */
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epi *= `_pagesize / 1024;
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epo *= `_pagesize / 1024;
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epf *= `_pagesize / 1024;
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api *= `_pagesize / 1024;
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apo *= `_pagesize / 1024;
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apf *= `_pagesize / 1024;
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fpi *= `_pagesize / 1024;
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fpo *= `_pagesize / 1024;
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fpf *= `_pagesize / 1024;
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re *= `_pagesize / 1024;
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sr *= `_pagesize / 1024;
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mf *= `_pagesize / 1024;
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this->swap *= `_pagesize / 1024;
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this->free *= `_pagesize / 1024;
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/* print line */
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printf("%9d %7d %5d %4d %3d ",
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this->swap, this->free, re, mf, sr);
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printf("%4d %4d %4d %4d %4d %4d %4d %4d %4d\n",
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epi, epo, epf, api, apo, apf, fpi, fpo, fpf);
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/* clear counters */
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pi = 0; po = 0; re = 0; sr = 0; mf = 0; fr = 0;
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sy = 0; in = 0; cs = 0; maj = 0; cow = 0; pro = 0;
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epi = 0; epo = 0; epf = 0; api = 0; apo = 0; apf = 0;
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fpi = 0; fpo = 0; fpf = 0;
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}
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