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RTEMS 4.5.1-pre3 On-Line Library


Memory Requirements RTEMS Code Space Worksheet

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8.4: RTEMS Code Space Worksheet

The RTEMS Code Space Worksheet is a tool provided to aid the RTEMS application designer to accurately calculate the memory required by the RTEMS run-time environment. RTEMS allows the custom configuration of the executive by optionally excluding managers which are not required by a particular application. This worksheet provides the included and excluded size of each manager in tabular form allowing for the quick calculation of any custom configuration of RTEMS. The RTEMS Code Space Worksheet is below:

RTEMS Code Space Worksheet

Component Included Not Included Size
Core 20,336 NA
Initialization 1,408 NA
Task 4,496 NA
Interrupt 72 NA
Clock 576 NA
Timer 1,336 208
Semaphore 1,888 192
Message 2,032 320
Event 1,696 64
Signal 664 64
Partition 1,368 152
Region 1,736 176
Dual Ported Memory 872 152
I/O 1,144 00
Fatal Error 32 NA
Rate Monotonic 1,656 208
Multiprocessing 8,328 408
Total Code Space Requirements


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