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Top Forums UNIX for Advanced & Expert Users Why my sar is not updating the output file. Post 302095912 by skneeli on Sunday 12th of November 2006 08:30:00 AM
Old 11-12-2006
Why my sar is not updating the output file.

I am trying to collect the sar output for around 90minutes.

When i do

sar 1 5000 >> /tmp/sar.out

It's not updating the sar.out file. When we decrease the 5000 to smaller number like 10, i can see the file sar.out updated after the 10seconds.If i kill my sar while it is running it's not putting any thing in sar.out file.
Is it normal behaviour of sar or should i see the increment in sar.out file after each execution interval.
 

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sag(1)								   User Commands							    sag(1)

NAME
sag - system activity graph SYNOPSIS
sag [-e time] [-f file] [-i sec] [-s time] [-T term] [-x spec] [-y spec] DESCRIPTION
The sag utility graphically displays the system activity data stored in a binary data file by a previous sar(1) run. Any of the sar data items may be plotted singly or in combination, as cross plots or versus time. Simple arithmetic combinations of data may be specified. sag invokes sar and finds the desired data by string-matching the data column header (run sar to see what is available). The sag utility requires a graphic terminal to draw the graph, and uses tplot(1) to produce its output. When running Solaris 2.x and OpenWindows, perform the following steps: 1. Run an "xterm" as a Tektronics terminal: prompt# xterm -t 2. In the "xterm" window, run sag specifying a tek terminal: prompt# sag -T tek options OPTIONS
The following options are supported and passed through to sar (see sar(1)): -e time Select data up to time. Default is 18:00. -f file Use file as the data source for sar. Default is the current daily data file /usr/adm/sa/sadd. -i sec Select data at intervals as close as possible to sec seconds. -s time Select data later than time in the form hh[:mm]. Default is 08:00. -T term Produce output suitable for terminal term. See tplot(1) for known terminals. Default for term is $TERM. -x spec x axis specification with spec in the form: name[op name]...[lo hi] name is either a string that will match a column header in the sar report, with an optional device name in square brackets, for example, r+w/s[dsk-1], or an integer value. op is + - * or / surrounded by blank spaces. Up to five names may be specified. Parentheses are not recognized. Contrary to custom, + and - have precedence over * and /. Evaluation is left to right. Thus, A/A+B*100 is evaluated as (A/(A+B))*100, and A+B/C+D is (A+B)/(C+D). lo and hi are optional numeric scale limits. If unspecified, they are deduced from the data. Enclose spec in double-quotes ("") if it includes white space. A single spec is permitted for the x axis. If unspecified, time is used. -y spec y axis specification with spec in the same form as for -x. Up to 5 spec arguments separated by a semi-colon (;) may be given for -y. The -y default is: -y"%usr0100;%usr+%sys0100;%usr+%sys+%wio0100" EXAMPLES
Example 1: Examples of the sag command. To see today's CPU utilization: example$ sag To see activity over 15 minutes of all disk drives: example$ TS=`date +%H:%M` example$ sar -o /tmp/tempfile 60 15 example$ TE=`date +%H:%M` example$ sag -f /tmp/tempfile -s $TS -e $TE -y "r+w/s[dsk]" FILES
/usr/adm/sa/sadd daily data file for day dd ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWaccu | +-----------------------------+-----------------------------+ SEE ALSO
sar(1), tplot(1), attributes(5) SunOS 5.10 4 Mar 1998 sag(1)
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