[erlang-questions] : : Linked-in drivers: output and outputv callbacks

Raimo Niskanen <>
Fri Dec 14 11:01:52 CET 2007


On Thu, Dec 13, 2007 at 10:47:45PM +0000, Joel Reymont wrote:
> Raimo,
> 
> On Dec 13, 2007, at 10:06 PM, Raimo Niskanen wrote:
> 
> >The output callback should die and all operations should be
> >moved to outputv. When anyone gets the time.
> 
> 
> Could you elaborate on why you switched?
> 

It was for the file driver to utilize non-copying writev
OS calls when you write many large binaries.



> Did you get a measurable increase in performance or decrease in memory  
> use?

I think some application made use of it and was satisfied,
but I have no measurement results.



> 
> 	Thanks, Joel
> 
> --
> http://wagerlabs.com
> 
> 
> 
> 

-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB



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