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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 12,674 NA
Initialization 970 NA
Task 3,562 NA
Interrupt 54 NA
Clock 334 NA
Timer 1,110 184
Semaphore 1,632 172
Message 1,754 288
Event 1,000 56
Signal 418 56
Partition 1,164 132
Region 1,494 160
Dual Ported Memory 724 132
I/O 686 00
Fatal Error 24 NA
Rate Monotonic 1,212 184
Multiprocessing 6.952 332
Total Code Space Requirements


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