stats with glance

[Lorenzo Facello]

Hi all,
I need to collect stats with glance every 30 sec ( always )
I tried to launch it with nohup:
nohup glance -j 30 -adviser_only -syntax /opt/perf/examples/adviser/activity" > /logs/test &
but if I close the shell it stop!!!
any suggestions??!!
thanks
LF

[Sanjay Kumar Suri]

Use the cron to get the work done every 30 seconds.

sks

[Lorenzo Facello]

...
Can I use crontab every 30 sec????
Can you tell me the syntax, please?
L

[Sanjay Kumar Suri]

Sorry Sir

cron's granularity is in minutes.

sks

[RAC_1]

First thing is option -j. It is screen refresh interval for glance. Check man page for glance.

Also you can put any task in cron that is to be run periodically and is to be run for less than 1 min.

What you can do is put your glance command in script and put sleep statement so as to run it for every 30 secs. Like follows.
#!/usr/bin/ksh
while true
do
nohup glance -j 30 -adviser_only -syntax /opt/perf/examples/adviser/activity" > /logs/test
sleep 30
done

Also your redirection for command should be >> instead of >. > will overwrite the file everytime the command is run.

Anil

[Johan Lorimier]

HI,

what type of stats are you interrested in ?

If it is only the simple ones as cpu, io, pagination you can use sar that will do the job very well.

To do it with sar add the following line to the root crontab :

0 * * * * /usr/lbin/sa/sa1 600 6

be sure that the directory /var/adm/sa exist.

Johan

[RAC_1]

Typo in my reply. Read as follows.

Also you can not put any task in cron that is to be run periodically and is to be run for less than 1 min.

[Sanjay Kumar Suri]

Can at command be used for this purpose as in at seconds can be sepcified?

while true
do
at command
sleep 30
done

sks

[David Nardi]

Do you want it to continually run and update every 30 seconds, or run every 30 seconds but stop after reporting the stats? You can use the -iterations option to distinguish.

You can use cron or the at command to run it every minute with -a 30 second interval (-j 30) for 2 intervals (-interval 2).

The command would look like this:
glance -j 30 -iterations 2 -adviser_only -syntax /opt/perf/examples/adviser/activity >> temp

Also, look into using the -bootup option for glance.