Hitachi HF-BX1000 Instruction Manual page 150

< NOTE >
You may not be able to start collecting performance counter data when the
system load is high. After you start collecting performance counter data, confirm
that the status of the data collector set you are using is "Running".
Confirm that the Performance Counter data collection has started properly.
In addition, if the system load is high or if you repeatedly start and stop collecting
performance counter data, sometimes you cannot start or stop collecting
performance counter data.
If this situation happens, terminate Performance Monitor, wait for a while, restart
Performance Monitor, and then start collecting the data.
Performance Counter data cannot be collected.
If you cannot start collecting performance counter data even after you have
restarted Performance Monitor, restart the system.
Confirm that the status of the
data collector set you are using
is "Running".
The start and stop buttons are
disabled and you cannot use
them.
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6. TROUBLESHOOTING