[vlc-devel] [PATCH] access: dvb: Realloc block to actually used size.

[Rémi Denis-Courmont]

On Tue, 24 Sep 2013 14:59:02 +0200, Julian Scheel <julian at jusst.de> wrote:
> The realloc caused packet loss?

The performance problem caused packet loss and reallocation contributes to
it.

> Why that?

Reallocation requires memory copying in most cases, and extra heap
processing.

> I see that a too small buffer size would cause packet loss,

Eventually the kernel side buffers fill up and overflow. Data gets lost.
It works the same way for DVB or UDP. It is a little bit more subtle for
TCP.

-- 
Rémi Denis-Courmont
Sent from my collocated server