On Dec 13, 2010, at 10:19 AM, Roman Haefeli wrote:
On Fri, 2010-12-10 at 10:54 -0500, Hans-Christoph Steiner wrote:
On Dec 10, 2010, at 5:12 AM, IOhannes m zmölnig wrote:
On 12/09/2010 10:28 PM, Roman Haefeli wrote:
@ IOhannes
Though I like this 'stable'/reliable behaviour of iemnet's
[tcpserver],
I wonder what happens, if it keeps sending data to the unreachable
client. Will it just go on and buffer everything until the whole
RAM of
the computer is consumed? If so, wouldn't it be more wise to just
disconnect that client at some point in order to avoid the box
running
out of memory?
you can query the fillstate of the buffer from within the patch and
act
upon that: if you prefer to disconnect after 300MB (because of the
2.5GB
memory you have, 2GB are only swap), or if you rather go and crash
or
whatever...it's up to you.
Great! That's even better than to disconnect clients at some arbitrary
buffer size.
A 300 MB network buffer! That sounds scary.
It's not really a network buffer. If I understand correctly, it's the
RAM used by the Pd process that grows, when this buffer is filled. I
guess, there is nothing to be really scared about.
Anyway, there is no 'real' alternative to buffering data. When a
certain
client is not totally responsive, you either have to make the server
blocking ([netsend]/[maxlib/netserver]), or you decide to discard data
that cannot be delivered ([mrpeach/tcpserver]), or you buffer the data
([iemnet/tcpserver]). The last option is definitely the best, in my
opinion.
Doing "networking with Pd" is special in that you use a real-time
oriented framework (Pd) together with a 'time-agnostic' one. TCP only
cares about _what_ is delivered, but not _when_. Accordingly, special
measures are necessary to join both worlds in a reliable way.
Roman
I've never heard of an app do so much network buffering. At some
point, that data needs to be processed, not just buffered. If you end
up having a giant buffer, chances are there is a problem that needs to
be dealt with. Might as well deal with it after a couple of megs are
filled rather than just some
From what I've seen, most network buffering is done with a ring
buffer, so a fixed size. That's my two bits...
.hc
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Using ReBirth is like trying to play an 808 with a long stick. -
David Zicarelli
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