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Speed of printf

Altera_Forum
Honored Contributor II
‎01-07-2010 02:49 PM
1,291 Views

Whats the speed in kbit/s for the printf Command? I am using a Stratix III Board(NIOS II CPU).

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Altera_Forum
Honored Contributor II
‎01-07-2010 04:20 PM
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The question is unanswerable as it depends on too many outside factors such as: 

1 - Processor speed 

2 - What is the STDOUT device and it's speed 

3 - What other things is the processor busy doing. 

 

Even knowing those numbers nobody is going to be able to estimate it for you. You'll just need to run some tests and measure it for your system. 

 

Relatively speaking, printf is slow. 

 

Jake
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Altera_Forum
Honored Contributor II
‎01-12-2010 04:49 PM
595 Views

The next problem is (maybe that isnt problem): function printf take about 50kB of memory. So i use puts function and numbers retype to string. The final code is smaller. Under 20kB. 

 

VK
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