sar

[Jonathan Caplette]

Hi guys!!

I'm trying to do a "sar -u" and it give me this error:

sar: Can't open /var/adm/sa/sa21

What is that file?? Cause it doesn't exist on my machine!!

Any idea???

Regards
Jonathan

[MANOJ SRIVASTAVA · Accepted solution]

Hi Jonathan


Use sar -u 2 10 or some argument which specifies that you ahve to run thsi command for ten times every 2 seconds .


Manoj Srivastava

[Helen French]

Hi Jonathan:

This will give you the answer:

# man sar

This has two forms of operation. If no intervals specified, then it checks the directory /var/adm/sa/saDD (DD is the date) for previous outputs.

HTH,
Shiju

[Pete Randall]

It is "the standard system
activity daily data file /var/adm/sa/sadd for the current day dd." Since the directory /var/adm/sa probably doesn't exist, it can't create the file. Make the directory and then try it.

Good luck,
Pete

[Darrell Allen]

Hi Jonathan,

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

Also, use the ITRC search (upper left sidebar). You'll get many hits on "+sar +adm". One is:
http://forums.itrc.hp.com/cm/QuestionAnswer/0,,0xd09d8cc5e03fd6118fff0090279cd0f9,00.html

Darrell

[Jonathan Caplette]

Ok I see...
I forgot to put some arguments like sar -u 2 10... then it worked fine... and I created the file with the command /usr/lbin/sa/sa1 and now everything work fine...

Thanks for the help!! :)
ciao!

[Vogra]

Jonathan,
see at http://www.sarcheck.com/schp.htm

Can help you.
Lima.