Re: Unix sockets via TCP on localhost: is TCP slower?

From: David Miller
Date: Thu Nov 13 2008 - 19:22:55 EST


From: "J.R. Mauro" <jrm8005@xxxxxxxxx>
Date: Thu, 13 Nov 2008 19:19:36 -0500

> On Wed, Nov 12, 2008 at 6:20 PM, Olaf van der Spek <olafvdspek@xxxxxxxxx> wrote:
> > Hi,
> >
> > Quite often in discussions, I see people claiming Unix sockets are
> > faster then TCP sockets on a connection that stays inside localhost.
>
> Unix domain sockets should be faster because they're not subject to
> windowing, ACKs, flow control, encapsulation, etc. etc.

And the wakeup rate is higher for TCP, and our process scheduler has
been getting gradually slower and slower over time since 2.6.22
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