# FreeRTOS Benchmarking

**URL:** <https://forums.freertos.org/t/freertos-benchmarking/5636>\
**Category:** Kernel\
**Created:** [January 23, 2015, 11:18am UTC](https://forums.freertos.org/t/freertos-benchmarking/5636 "2015-01-23T11:18:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [January 23, 2015, 11:18am UTC](https://forums.freertos.org/t/freertos-benchmarking/5636/1 "2015-01-23T11:18:22Z")

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**[sindhukrishna](https://sourceforge.net/u/sindhukrishna/)** wrote on [Friday, January 23, 2015](https://sourceforge.net/p/freertos/discussion/382005/thread/f78bbf5f/#0357):

Greetings FreeRTOS Team !

I wish to benchmark the FreeRTOS v8.1.2. Is there any comparison document that shows the Performance Metrics results for FreeRTOS and other OS(like uCOS, RTLinux etc). Kindly share the information if available. It would be useful if the results are based on Hercules Safety TMS570 based MCUs.

Thanks in Advance !

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**Author:** ![rtel](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rtel/32/31_2.png) [@rtel](https://forums.freertos.org/u/rtel)\
**Post date:** [January 23, 2015, 11:47am UTC](https://forums.freertos.org/t/freertos-benchmarking/5636/2 "2015-01-23T11:47:41Z")

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**[rtel](https://sourceforge.net/u/rtel/)** wrote on [Friday, January 23, 2015](https://sourceforge.net/p/freertos/discussion/382005/thread/f78bbf5f/#0357/8871):

There are no such documents, as to publish such a thing would breach  
license terms of FreeRTOS (and some other OSes).

There are lots of reasons for that:

1. There is no real way of directly comparing one with the other as the  
API functions will do slightly different things.

2. Comparisons are always inaccurate and lead to bad feeling and  
arguments in the community.

3. Metrics published by industry insiders are always skewed.

4. To benchmark a system you have a very deep understanding of the  
system (how to tune it, for example in FreeRTOS turn off asserts, turn  
of stack overflow checking, select the most appropriate function [task  
notifications instead of semaphores], etc., etc.) and you cannot have  
that level of understanding of all the systems you are benchmarking.  
The fact you are looking for something that compares FreeRTOS with  
RTLinux already shows you are wanting to compare products of massively  
different scale that are designed to achieve different goals.

5. You cannot benchmark robustness, support quality, ease of use or  
documentation standards, etc.

6. Different systems are designed with different goals. For example  
benchmarking something designed to be as small as possible, or as  
portable as possible, or as fast as possible, then making comparisons  
between all of them makes little sense.

7. Some RTOSes have two steps to achieve what another can do in one.

8. Most people who ask for statistics don’t know what performance they  
actually need in the first place, so are going around things backwards  
as even the slowest fattest system might be the best choice for them if  
it is fast ‘enough’ and thin ‘enough’ and it gets their part to market  
fastest.

9. You can always make something faster by removing functionality. Do  
you want to have something ultra fast that doesn’t do anything?

10. Need I go on ;o)

FreeRTOS is free to download and use - create a scenario that is similar  
to what your application is actually going to do to see if FreeRTOS  
meets your requirements. If it does, great, use it, its not going to  
cost you anything or earn us anything. If it doesn’t meet your needs  
then also great - you learned that quickly and can move onto find  
something else.

Regards.