Q:I am sorry,socket buffer size of PPC?

Q:I am sorry,socket buffer size of PPC?

Post by henr » Sat, 09 Aug 2003 13:01:33

I use recvfrom() to receive UDP packet on ppc,but always get the error code
it meaning:
The datagram is too large to fit into the receive buffer and therefore is

But my receive buffer is 1024*4!

Why this happen,could someone help me!

1. Q:I am sorry,socket buffer size of PPC?

2. Determine the best buffer sizes when using socket.send() and socket.recv()

I'd like to know if there's a way to determine which is the best
buffer size to use when you have to send() and recv() some data over
the network.
I have an FTP server application which, on data channel, uses 8192
bytes as buffer for both incoming and outgoing data.
Some time ago I received a report from a guy [1] who stated that
changing the buffers from 8192 to 4096 results in a drastical speed
I tried to make some tests by using different buffer sizes, from 4 Kb
to 256 Kb, but I'm not sure which one to use as default in my
application since I noticed they can vary from different OSes.
Is there a recommended way to determine the best buffer size to use?

Thanks in advance

[1] http://www.yqcomputer.com/

--- Giampaolo

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