Starting sadc/sar as a service

Collect diagnostic data when a problem occurs. Then submit the diagnostic data to IBM Support.

Whatever the problem, start with this general collection of data as soon as the error occurs, preferably

before a reboot of the system.

Start sadc/sar by using the sysstat service. When started as a service, the data files are written to the /var/log/sa directory. The files are named sa<dd> and sar<dd> respectively, where <dd> is the current day's two-digit date. Both files are constantly updated during the day.

Procedure

To start the sadc command as a service:

Start the sysstat service.

To start the sysstat service as a permanent service that persists across reboots, issue:
```
systemctl enable sysstat.service
```
To check that the service is started at boot time and to check that the service is active, issue:
```
systemctl status sysstat.service
```
If the service is not active, issue the following command to start it:
```
systemctl start sysstat.service
```

Results

To report performance data, include both the sadc and the sar data files with the problem report.

What to do next

After you collect the appropriate diagnostic data, you can complete the following tasks, as appropriate: