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RTEMS 4.6.1 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 16,948 NA
Initialization 916 NA
Task 3,436 NA
Interrupt 52 NA
Clock 296 NA
Timer 1,084 144
Semaphore 1,500 136
Message 1,596 224
Event 1,036 44
Signal 396 44
Partition 1,052 104
Region 1,392 124
Dual Ported Memory 664 104
I/O 676 00
Fatal Error 20 NA
Rate Monotonic 1,132 136
Multiprocessing 6,840 228
Total Code Space Requirements


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