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RTEMS 4.6.99.3 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 21,452 NA
Initialization 1,408 NA
Task 4,804 NA
Interrupt 96 NA
Clock 536 NA
Timer 1,380 340
Semaphore 1,928 308
Message 2,400 532
Event 1,460 100
Signal 576 100
Partition 1,384 244
Region 1,780 292
Dual Ported Memory 928 244
I/O 1,244 NA
Fatal Error 44 NA
Rate Monotonic 1,756 336
Multiprocessing 11,448 612
Total Code Space Requirements


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