I noticed afterwards that the sar command was causing most of the delay but then again I am under the impression that bash was a bit faster.
To answer "methyl"'s question, I will use this script along with net-SNMP extend (or exec if you will) functionality. The idea is to graph the accumulation of read/writes on servers.
So... Can someone propose a logical interval? The servers that will be queried I assure are very very busy
Currently I have it set as
Code:
sar -d 5 4
this also helps so that my snmpwalks do not time out.
For the sake of learning.. Can someone answer how come the variable scope of the variable "CONT" is not global...?
I've been wondering if I can make mutexes much easier to use in C++ with creative use of a locking class and variable scope, but I'm not sure if things happen in the order I want. Here's pseudocode for something that could use the class:
int someclass::getvalue()
{
int retval;
... (0 Replies)
Hi,
I am stuck while developing a shell sub-routine which checks the log file for "success" or "failure". The subroutine reads the log file and checks for key word "success", if found it set the variable (found=1). It returns success or failure based on this variable.
My problem is, I can... (2 Replies)
Hi All,
I am new to unix shell scripting,
in the below script "num" is an input file which contains a series of numbers example :
2
3
5
8
I want to add the above all numbers and want the result finally outside the while loop. it prints the value zero instead of the actual expected... (13 Replies)
Hi,
I want to know about the variable scope in shell script.
How can we use the script argument inside the function?
fn () {
echo $1 ## I want this argument should be the main script argument and not the funtion argument.
}
also are there any local,global types in shell script?
if... (3 Replies)
Hi All,
I've been researching this problem and I am pretty sure that the issue is related to the while loop and the piping. There are plenty of other threads about this issue that recommend removing the pipe and using redirection. However, I haven't been able to get it working using the ssh and... (1 Reply)
Hi,
I use Korn Shell. Searched Forum and modified the way the file is input to the while loop, but still the variable does not seem to be retaining the final count.
while read name
do
Tmp=`echo $name | awk '{print $9 }'`
Count=`cat $Tmp | wc -l`... (6 Replies)
Hi All
Is there is any way to maintain the scope of the variable in unix
Example
x=1
j=1
while
do
..
....
....
while
do
..
..
x=x+1
done
#inner most while loop ends here
done
#outer loop ends here (8 Replies)
Hi,
I'm a Delphi developer new to linux, new to this forums and new to BASH programming and got a new task in my work: maintaining an existing set of BASH scripts. First thing I want to do is making the code more reliable as in my opinion it's really bad written. So here's the quest:
I'm... (6 Replies)
I have to admit that i have not used Perl at all and this is a singular occasion where i have to patch an existing Perl script. I dearly hope i do not have to do it again for the next 15 years and therefore try to avoid having to learn the programming language in earnest.
The OS is AIX 7.1, the... (2 Replies)
Cope sample1: test.sh
i=0
echo " Outside loop i = $i "
while
do
i=$(( $i + 1))
echo "Inside loop i = $i "
done
echo " Out of loop i is : $i "
When run output :
Outside loop i = 0
Inside loop i = 1
Inside loop i = 2
Inside loop i = 3
Inside loop i = 4
Inside loop i = 5
Inside... (8 Replies)
Discussion started by: Adarshreddy01
8 Replies
LEARN ABOUT OPENDARWIN
sadc
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