#!/usr/sbin/dtrace -s /* * sar-c.d - sar -c demo in DTrace. * Written using DTrace (Solaris 10 3/05). * * This has been written to demonstrate fetching similar data as sar -c * from DTrace. This program is intended as a starting point for other * DTrace scripts, by beginning with familiar statistics. * * $Id: sar-c.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * USAGE: sar-c.d * * FIELDS: * scall/s System calls * sread/s reads * swrit/s writes * fork/s forks * exec/s execs * rchar/s read characters * wchar/s write characters * * IDEA: David Rubio, who also wrote the original. * * NOTES: * As this program does not use Kstat, there is no summary since boot line. * * SEE ALSO: sar(1) * * COPYRIGHT: Copyright (c) 2005 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 12-Jun-2005 Brendan Gregg Created this. * 12-Jun-2005 " " Last update. */ #pragma D option quiet inline int SCREEN = 21; /* * Initialise variables */ dtrace:::BEGIN { scall = 0; sread = 0; swrit = 0; fork = 0; exec = 0; rchar = 0; wchar = 0; lines = SCREEN + 1; } /* * Print header */ dtrace:::BEGIN, tick-1sec /lines++ > SCREEN/ { printf("%-20s %7s %7s %7s %7s %7s %8s %8s\n", "Time", "scall/s", "sread/s", "swrit/s", "fork/s", "exec/s", "rchar/s", "wchar/s"); lines = 0; } /* * Probe events */ syscall:::entry { scall++; } sysinfo:::sysread { sread++; } sysinfo:::syswrite { swrit++; } sysinfo:::sysfork { fork++; } sysinfo:::sysvfork { fork++; } sysinfo:::sysexec { exec++; } sysinfo:::readch { rchar += arg0; } sysinfo:::writech { wchar += arg0; } /* * Print output line */ profile:::tick-1sec { /* print line */ printf("%20Y %7d %7d %7d %4d.00 %4d.00 %8d %8d\n", walltimestamp, scall, sread, swrit, fork, exec, rchar, wchar); /* clear counters */ scall = 0; sread = 0; swrit = 0; fork = 0; exec = 0; rchar = 0; wchar = 0; }