Memory and CPU utilization for past period

user7509 · #1 (**permalink**) 2 Weeks Ago

Hi All,

We have a Linux (RHEL5) server hosting Oracle database.
Usually, Memory utilization will by 50 % and CPU utilization will be 20%.
In the last three days, volume of load was high and now back to normal.

Is it possible to check the Memory (RAM) utilization and CPU utilization in % for the past three days. Like through some logs are so.

Every hour Memory and CPU utilization in % or does it peaked to 90+ %.
Because we want to know, whether the server peaked to 90+ % in utilization.

Any help?

jim mcnamara · #2 (**permalink**) 2 Weeks Ago

Probably not. Do you know about sar, sadc? Did you have sadc running?

Turn on sadc to collect data into filenames /var/log/sa/sa[dd] where [dd] is the day of the month.

When you have a problem use sar to read the file for the problem day. sadc will collect data endlessly so be careful. You can fill up the /var filesystem which is a bad thing.

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