Bosch DISBLAY DDU 7, Manual

Page: 53 / 160

The conditional combination is displayed in the DDU 7 condition channel win‐
dow.
CPU Load Limits
As all microprocessors, the DDU 7’s processor has limited capacities. The current
load of the processor can be monitored using the channel “cpu_load”. When
configuring your device, please make sure the used CPU load is in a save range
below 100 %.
Bosch recommends a maximum CPU load of 85 % (averaged). Exceeding this lim‐
it might result in DDU 7 not being able to fulfill its required measuring/logging/
display tasks or even in the DDU 7 crashing and rebooting.
Main factors influencing the CPU load are:
▪ Number and complexity of math channels
▪ Number and complexity of conditions
▪ CAN traffic on both CAN lines
▪ Display configuration, especially displaying pictures
▪ Logger configuration (total logging rate [kB/s], conditional measurement
rates)
To help respecting the limit of 85 % CPU load, the DDU 7 creates an error memo‐
ry entry. To trigger this error entry, the CPU load must exceed the limit for 5 mi‐
nutes without interruption.
When being confronted with this error memory entry (see ‘Error info’ in RaceCon)
or when being confronted with DDU 7 resets due to complex configuration set‐
ups, please consider reducing the demands on the DDU 7 adapting the influenc‐
ing factors mentioned above.
8.8
Display Configuration | 8
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