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DS8800 Performance Monitoring and Tuning
book

DS8800 Performance Monitoring and Tuning

by Gero Schmidt, Bertrand Dufrasne, Jana Jamsek, Peter Kimmel, Hiroaki Matsuno, Flavio Morais, Lindsay Oxenham, Antonio Rainero, Denis Senin
July 2012
Intermediate to advanced content levelIntermediate to advanced
726 pages
26h 28m
English
IBM Redbooks
Content preview from DS8800 Performance Monitoring and Tuning
392 DS8800 Performance Monitoring and Tuning
sar -f /var/adm/sa/sadd (dd is the day in which you are interested)
You can also focus on a certain period, for example, 8 a.m. to 5:15 p.m. with this command:
sar -s 8:00 -e 17:15 -f /var/adm/sa/sadd
Remember, sa2 removes the data collection files that are over a week old as scheduled in
cron.
You can save sar information to view later with the commands:
sar -A -o data.file interval count > /dev/null & (SAR data saved to data.file)
sar -f data.file (Read SAR information back from saved file)
All data is captured in binary form and saved to a file (data.file). The data can then be
selectively displayed with the sar command by using the -f option.
sar summary
The sar tool helps you to tell quickly if a system ...
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Publisher Resources

ISBN: 0738436836Purchase book