runqueue.d (Collect run queue info)


 
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Old 10-17-2008
runqueue.d (Collect run queue info)

Needs 'checkperf' script available on BigAdmin. The minimal interval for which sar is able to collects statistics is one second. If a system has many processes that take a couple of milliseconds to run, sar will not know that they are in the run queue. Therefore, if DTrace is installed on the system (for example, if the system runs the Solaris 10 OS), checkperf calls runqueue.d, which collects run queue information every millisecond for 30 seconds. This script is described and explained in the BigAdmin Tech Tip: Automating a System Performance Check Using the checkperf Utility http://www.sun.com/bigadmin/content/...perf_check.jsp

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sadc(8) 						    BSD System Manager's Manual 						   sadc(8)

NAME
sadc -- system activity data collector SYNOPSIS
/usr/lib/sa/sadc [-m mode] [t n] [ofile] DESCRIPTION
The sadc tool is used to collect cumulative system activity data. The sample system data is collected at intervals t seconds apart, in a loop n times. The binary sample data is written to ofile if specified. Otherwise, the binary data is written to stdout. If the ofile file does not exist, it is created, otherwise it is truncated. sadc is intended to be used as the engine behind the sar(1) command, and is not typically invoked on the command line. Two shell scripts, sa1 and sa2 are provided to drive the typical sampling, saving, and reporting process. OPTIONS
The following options modify the way data is collected by sadc. -m mode Modify the collection of system statistics as specified by mode. Currently only one mode is supported. PPP By default, the collection of ppp network interface statistics is turned off. This is because the number of ppp connec- tions can be very high, causing the raw data file to grow unexpectedly large, especially when samples are collected at short intervals. Use the PPP mode to turn the collection back on. EXAMPLES
/usr/lib/sa/sadc 15 20 /tmp/sample.out This call collects 20 samples at 15 second intervals. The binary data is written to the /tmp/sample.out file FILES
/var/log/sa/sadd Default daily activity file that holds the binary sampling data. dd are digits that represent the day of the month. /usr/lib/sa/sa1 Shell script used to drive the sar data collection. /usr/lib/sa/sa2 Shell script used to drive the sar data reporting. SEE ALSO
sa1(8), sa2(8), sar(1), iostat(8), vm_stat(1), netstat(1), top(1), sc_usage(1), fs_usage(1) Mac OS X Jul 25 2003 Mac OS X