Re: PROBLEM: select() on TCP socket sleeps for 1 tick even if data available

[Dan Maas]

> It's not the select that waits. It's a delay in the tcp send
> path waiting for more data.  Try disabling it:
>
> int f=1;
> setsockopt(s, SOL_TCP, TCP_NODELAY, &f, sizeof(f));

Bingo! With this fix, 2.2.18 performance becomes almost identical to 2.4.0
performance. I assume 2.4.0 disables Nagle by default on local
connections...

Dan