J-Link / J-Trace (UM08001) © 2004-2017 SEGGER Microcontroller GmbH & Co. KG
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13.2.5 Performance
The performance of SEGGER RTT is significantly higher than any other technology
used to output data to a host PC. An average line of text can be output in one micro-
second or less. Basically only the time to do a single memcopy().
13.2.6 Memory footprint
The RTT implementation code uses ~500 Bytes of ROM and 24 Bytes ID + 24 Bytes
per channel for the control block in RAM. Each channel requires some memory for the
buffer. The recommended sizes are 1 kByte for up channels and 16 to 32 Bytes for
down channels depending on the load of in- / output.
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