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SubjectRe: High UNIX socket latency
At Tue, 13 Nov 2001 12:51:26 +0100,
Jakob Ostergaard <> wrote:
> In another application where I use a UNIX STREAM socket, I get
> a typical latency of one send() of around 1 ms.
> I cannot set TCP_NODELAY on a UNIX socket, and I can't really
> see why I get the high latency. Is there some undocumented
> option like TCP_NODELAY for UNIX STREAM connections, or are there
> other tricks I can play to get the latency down ?
> One process does a send(), the other one does a select() and a
> recv() - and the time from the send() to the recv() is around 1 ms
> which I think seems far too high.

I think more details are needed... kernel version, packet size,
select timeout, your program/environment, the result of
average responce time and each responce time, throughput, etc.

-- gotom
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