Serving large files overload memory

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What steps will reproduce the problem?
1. davserver installed on a small power ARM computer (cubox) 
2. running with minimal config (-n -J -M -T) or just normal one (-n -J)
3. accessing to larges files (700 Mo avi files) from Nautilus or Firefox

What is the expected output? What do you see instead?

fails after time out
"top" command shows davserver used memory increasing largely
It seems, davserver load file in memory before serving it. With large files and 
small computer, this isn't possible.


What version of the product are you using? On what operating system?
davserver 0.9.8
debian 6 / ARM
linux kernel 3.5.0-rc5-24627-ge9eceb3-dirty

Thanks !


Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 26 Jan 2013 at 1:38