Hi,
1-in vmstat commande line, in reply, which column is the more important to look and verify if server is very slow ?
2-how can I see how many sessions are opened with the same login ?
Many thanks before.
I forgot to say that we are under
SunOS SERVER 5.8 Generic_108528-24 sun4u sparc SUNW,Ultra-Enterpris.
regards.
Check the procs columns, r is for process that are currently runnable and waiting for cpu time, b is for processes that are blocked for some IO. The paging column is also important. You should not have very high values of po - pageouts and sr - pages scanned by the scan algo. These mean that your system is spending more time doing paging than carrying out user tasks.
But the exact threshold values of these depend on your system config, the applications running on the system and a host of other parameters, which makes it quite difficult to come up with exact values.