tutasoul.blogg.se - How to extract sar file

When ALL is specified each processor’s data is shown or only specified CPU’s data is processed. If you are interested in seeing values for each processor then -P option (per processor reporting) can be used with CPU number of your choice or ‘ALL’. Column CPU denoting value all indicates these are averaged out values of all 16 CPU for the given time instance.

Finally, it also gives us the average value for all parameters. Followed by a data with interval (2 sec) and count (3) specified in the command. The output starts with a line that has OS kernel version details, hostname in brackets, date, architecture, and the total number of CPUs. See the above example to get the values of the parameters explained above.

%steal: % of time wait by virtual CPU while hypervisor servicing another CPU (virtualization aspect).

%iowait: % of the time when CPU was idle (since processes were busy in IO).

%system: CPU % used by system processes.

%nice: CPU % used by user processes with nice priority.

Executing sar command with -u gives us below utilization matrices (highlighted values are more commonly observed for performance monitoring) : The default end time is 18:00:00įor CPU statistics, sar command has -u option.

-e hh:mm:ss The end time of the report.

Sar starts output records tagged to this time or very next available time-tagged record.

Below two options can be used with sar command (in conjunction with -f) so that specific time window data can be extracted. without -f option) for all below examples.īefore we start with resource reporting here is a quick tip about start and end time of reports when you are extracting data from datafiles. Also, we have seen how to get historic data from sar data files, I will be using only real-time commands (i.e. Now we will see different options that can be used to get different system resource utilization stats. We have already seen what is interval and count in the last post.