i have a unix batch written in c, dealing with really time-consuming
database operations
i want to write a ksh script to monitor its performance.
which items i should monitor?
do you have any suggestions?
1)cputime
2)swap area
3)pmem
4)
5)
what else? (1 Reply)
Hi Gurus,
Need to have a way to monitor Bandwidth utilization on Linux servers, running squid .
Have worked on 3rd party monitoring tools like Bandwidth d, Nagios etc.
But we are working to find out a way to monitor this through Sitescope, for which we need to find a file where the... (4 Replies)
Hi i am am monitioring a file every 60 seconds and checking if the file has changed and if it has changed i append the changes to another file. i am able to monitior the change in file size but i have a problem copying the changes made in the file to another file. i am using lseek to seek the last... (1 Reply)
Hi
Can any one helpe me in obtaining commands , which enables me to know the following :
Monitor Storage
Monitor RAM & CPU Utilization
Monitor Power Supply
Best wishes (1 Reply)
Hi,
I am trying to write a script to do monitoring kind of stuff,
requirement - when a server is given a start it updates a file called server.log, I need to keep on grepping the word "Running" and as soon as it comes , script should be exited with the message , "Server came up... (2 Replies)
Hi All,
I am writing a tool which remotely monitors network devices and sends an alarm if the device does not respond just like an NMS.
Can I use Threads module and invoke a simultaneous ping/snmpwalk to 100 or more devices and raise an alarm if any of the devices do no respond?
Please... (1 Reply)
Hello All,
I have written a script which will grep for error codes in a file and if the count for the same is about 500 it will send and smpp alert.
Here is my code.
#!/bin/bash
#########################################################################################################... (3 Replies)
I currently have a shellscript to check the size of a filesystem and email me if the size is over a certain percentage (80%). I have this script on crontab and executes the shell every 10 mins.
I have the above in place on 8 servers. It so happens that a file system on one of the servers is... (1 Reply)
Hello,
Can somebody suggest me any Free monitoring utility (preferably GUI) for Mysql DB(community edition).
What i am looking at is something that can give me a trend of DB performance and suggest when to upgrade or add more DB resources to existing infra.
Note - I tried mtop. but it... (3 Replies)
Discussion started by: Hari_Ganesh
3 Replies
LEARN ABOUT FREEBSD
swapoff
SWAPON(8) BSD System Manager's Manual SWAPON(8)NAME
swapon, swapoff, swapctl -- specify devices for paging and swapping
SYNOPSIS
swapon [-F fstab] -aLq | file ...
swapoff [-F fstab] -aLq | file ...
swapctl [-AghklmsU] [-a file ... | -d file ...]
DESCRIPTION
The swapon, swapoff and swapctl utilities are used to control swap devices in the system. At boot time all swap entries in /etc/fstab are
added automatically when the system goes multi-user. Swap devices use a fixed interleave; the maximum number of devices is unlimited. There
is no priority mechanism.
The swapon utility adds the specified swap devices to the system. If the -a option is used, all swap devices in /etc/fstab will be added,
unless their ``noauto'' or ``late'' option is also set. If the -L option is specified, swap devices with the ``late'' option will be added
as well as ones with no option. If the -q option is used, informational messages will not be written to standard output when a swap device
is added.
The swapoff utility removes the specified swap devices from the system. If the -a option is used, all swap devices in /etc/fstab will be
removed, unless their ``noauto'' or ``late'' option is also set. If the -L option is specified, swap devices with the ``late'' option will
be removed as well as ones with no option. If the -q option is used, informational messages will not be written to standard output when a
swap device is removed. Note that swapoff will fail and refuse to remove a swap device if there is insufficient VM (memory + remaining swap
devices) to run the system. The swapoff utility must move swapped pages out of the device being removed which could lead to high system
loads for a period of time, depending on how much data has been swapped out to that device.
Other options supported by both swapon and swapoff are as follows:
-F fstab
Specify the fstab file to use.
The swapctl utility exists primarily for those familiar with other BSDs and may be used to add, remove, or list swap devices. Note that the
-a option is used differently in swapctl and indicates that a specific list of devices should be added. The -d option indicates that a spe-
cific list should be removed. The -A and -U options to swapctl operate on all swap entries in /etc/fstab which do not have their ``noauto''
option set.
Swap information can be generated using the swapinfo(8) utility, pstat -s, or swapctl -l. The swapctl utility has the following options for
listing swap:
-h Output values in human-readable form.
-g Output values in gigabytes.
-k Output values in kilobytes.
-m Output values in megabytes.
-l List the devices making up system swap.
-s Print a summary line for system swap.
The BLOCKSIZE environment variable is used if not specifically overridden. 512 byte blocks are used by default.
FILES
/dev/{ada,da}?s?b standard paging devices
/dev/md? memory disk devices
/etc/fstab ASCII file system description table
DIAGNOSTICS
These utilities may fail for the reasons described in swapon(2).
SEE ALSO swapon(2), fstab(5), init(8), mdconfig(8), pstat(8), rc(8)HISTORY
The swapon utility appeared in 4.0BSD. The swapoff and swapctl utilities appeared in FreeBSD 5.1.
BSD November 22, 2013 BSD