[vlc-devel] UDP access-module (was: prefetch..)

Ilkka Ollakka ileoo at videolan.org
Wed Apr 18 10:53:29 CEST 2018


On Wed, Apr 18, 2018 at 10:35:10AM +0200, Francois Cartegnie wrote:
> Le 18/04/2018 à 10:33, Ilkka Ollakka a écrit :
> > On Wed, Apr 18, 2018 at 09:01:12AM +0200, Francois Cartegnie wrote:
> >>
> >> What about UDP broken since removal of its internal ring buffer ?
> > 
> > Hi,
> > 
> > What's broken in UDP?
> > 
> 
> Lots of reports about UDP drops/slow read which didn't happen in 2.2

Hi,

I would first check if it's more related to prefetch timing and mtu size
decrease than actual extra ringbuffer being removed? In 2.2 we tried to
allocate 65k blocks and read that size from socket.

In current code we have 7*188=1316, Which might not be optimal for some cases
even if we should get truncate if packet/datagram doesn't fit. But we set that
flag only on linux currently.

-- 
Ilkka Ollakka


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