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102 lines
2.3 KiB
D
Executable File
102 lines
2.3 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* sar-c.d - sar -c 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 sar -c
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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: sar-c.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $
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*
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* USAGE: sar-c.d
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*
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* FIELDS:
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* scall/s System calls
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* sread/s reads
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* swrit/s writes
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* fork/s forks
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* exec/s execs
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* rchar/s read characters
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* wchar/s write characters
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*
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* IDEA: David Rubio, who also wrote the original.
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*
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* NOTES:
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* As this program does not use Kstat, there is no summary since boot line.
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*
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* SEE ALSO: sar(1)
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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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* 12-Jun-2005 Brendan Gregg Created this.
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* 12-Jun-2005 " " 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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scall = 0; sread = 0; swrit = 0; fork = 0; exec = 0;
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rchar = 0; wchar = 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("%-20s %7s %7s %7s %7s %7s %8s %8s\n",
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"Time", "scall/s", "sread/s", "swrit/s", "fork/s",
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"exec/s", "rchar/s", "wchar/s");
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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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syscall:::entry { scall++; }
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sysinfo:::sysread { sread++; }
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sysinfo:::syswrite { swrit++; }
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sysinfo:::sysfork { fork++; }
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sysinfo:::sysvfork { fork++; }
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sysinfo:::sysexec { exec++; }
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sysinfo:::readch { rchar += arg0; }
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sysinfo:::writech { wchar += 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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/* print line */
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printf("%20Y %7d %7d %7d %4d.00 %4d.00 %8d %8d\n",
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walltimestamp, scall, sread, swrit, fork, exec, rchar, wchar);
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/* clear counters */
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scall = 0; sread = 0; swrit = 0; fork = 0; exec = 0;
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rchar = 0; wchar = 0;
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}
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