Cpu Load Limits - Bosch MS 50.4 Manual

9 | Project Configuration
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The channel names depend on the name used for the module, in this example GPS_Trig-
ger. Each trigger has a distance and a trigger channel with the abbreviation m for macro
or p for parameter based. The trigger channel will be set to 1, when the lowest distance to
the trigger point is detected. For the macro-based trigger, the stored latitude and longit-
ude values can be seen with the channels.
Measurement label
name_lat
name_long
name_ptrig_1..10
name_pdist_1..10
name_mtrig_1..10
name_mdist_1..10
name_macro_lat_1..10
name_macro_long_1..10
Example:

9.8 CPU Load Limits

As all microprocessors, the two processors of the VCU MS 50.4 have limited capacities.
The current load of the processors can be monitored using the channel "cpu_load_001" or
"cpu_load_002". 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 limit might
result in the VCU MS 50.4 not being able to fulfill its required measuring/logging/display
tasks or even in 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
– Logger configuration (total logging rate [kB/s], conditional measurement rates)
To help respecting the limit of 85 % CPU load, the VCU MS 50.4 creates an error memory
entry. To trigger this error entry, the CPU load must exceed the limit for 5 minutes without
interruption.
When being confronted with this error memory entry (see 'Error info' in RaceCon) or when
being confronted with VCU MS 50.4 resets due to complex configuration setups, please
consider reducing the demands on the VCU MS 50.4 adapting the influencing factors
mentioned above.
Vehicle_Control_Unit_VCU_MS_50.4_Manual
Function
interpolated gps latitude
interpolated gps longitude
trigger output of parameter based trigger (n)
distance to trigger of parameter based trigger (n)
trigger output of macro based trigger (n)
distance to trigger of parameter based trigger (n)
stored latitude for macro based trigger (n)
stored longitude for macro based trigger (n)
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