On Mon, Feb 25, 2013 at 2:22 PM, Eric Dumazet <eric.duma...@gmail.com> wrote:
> I don't understand the issue.
>
> sendfile() returns -EAGAIN only if no bytes were copied to the socket.

There is something wrong/unexpected/...

I have a program which can use either sendfile or send.  When using
sendfile to transmit a large block (I've seen it with 900k) the
sendfile call does not transmit everything.  There receiver gets only
about 600k.  This is the situation when I think I've seen EAGAIN
errors from sendmail but I cannot just now reproduce it.  This is with
sockets of AF_UNIX type.

Are there any limits to take into account?
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