Sar Problem

[Filosofo]

I have a problem with Sar.
I try to execute sar but I recived this message:

sar: Can't open /var/adm/sa/sa15

I try create this file but when execute the command I see the prompt and when I see into file but is empty.

Can somebody help me?

Filo

[Pete Randall]

Try "man sar"


Pete

[U.SivaKumar_2]

Hi,

#touch /var/adm/sa/sa15

restart the server.

regards,

U.SivaKumar

[T G Manikandan]

Do a
#sar -d 5 5

check for the options and their usage.

check
man sar


Thanks

[Domenico_5]

sar with a time interval goes against current, realtime system. sar without a time interval goes against the collection files in /var/adm/sa. To create those files run:
/usr/lbin/sa/sa1

man sa1 for more info. It will provide example crontab entries for collecting sar data.

[Bill Hassell]

To see immediate measurements, sar requires as a minimum, the length of time. The sar program is not interactive so the minimum needed to get a measurement is an option (or options) and the number of seconds as in:

sar -v 1
sar -a 1

Without the time interval, sar goes into data logging mode.