Re: socket programming using MSG_WAITALL for receiving multicast

On Mar 20, 4:48 pm, Rick Jones <rick.jon...@hp.com> wrote:

> So, it is ok to post single-byte reads to a stream socket?-)

That's several orders of magnitude worse than what he's doing.
Consider a typical packet of data received, how many system calls he
needs, and how many system calls that needs.

There is, also, one other huge difference. Posting larger reads
doesn't change when your process is made ready-to-run. Whether you try
to read one byte or one thousand, you will become ready-to-run at the
same time. He is looking for a way to change when his process becomes
ready-to-run -- he's looking to make it later. That wastes CPU time he
could be using to process the packet(s) he has already received.

DS