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


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