Where I can find this documents?

[Fragon]

About how to use "sar" and the detail information for each output!
For example, "sar -b" and its meaning of each output field. And, if the output value is high or low, etc.

Thank in advance!

-Gerald-

[Stefan Farrelly · Accepted solution]

what about the manpage for sar ?
man 1m sar

or
http://www.docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90681/B2355-90681_top.html&con=/hpux/onlinedocs/B2355-90681/00/03/327-con.html&toc=/hpux/onlinedocs/B2355-90681/00/03/327-toc.html&searchterms=sar&queryid=20020731-003618

[Ceesjan van Hattum]

Maybe not the best answer, but type:
sar -o sarfile 5 60
(60 times on 5 sec. interval)
sar -Af sarfile > report

The report generated contains a full report.
Study this report together with 'man 1M sar' and sure you will figure out what is what.

Regards,
Ceesjan

[Marius Botha]

Hi,

sar -b is good for checking db buffer cache activity.
When you use sar -b 1 5 ..
bread/s - no of read operations ps from disk to bc
lread/s - no of read operations ps from bc
%rcache - buffer cache hit ratio for read requests
bwrit/s - no of write oper ps from bc to disk
lwrit/s - no of write oper ps to bc
%wcache - buffer cache hit ratio for write reqts
pread/s - no of read oper ps from raw device
pwrit/s - no of write oper ps to raw device

If you are looking at general tuning on your box, try glance ..you can drill down into more detail than with sar. Sar is good combination with iostat,vmstat,netstat,lanadmin for perf and tuning.

Also, if you run Oracle .. try to keep buffer cache hit ration in excess of 0.97 ratio .. obviously if you are running in a batch mode expect 0.89 as a norm.