Re: IO::Socket::UNIX questions
From: Jonathan Paton (jepaton_at_gmail.com)
Date: 12/31/04
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Date: Fri, 31 Dec 2004 10:47:50 +0000 To: "mgoland@optonline.net" <mgoland@optonline.net>, beginners@perl.org
On Thu, 30 Dec 2004 22:51:00 -0500, mgoland@optonline.net
<mgoland@optonline.net> wrote:
> ...
> > 3: Do UNIX sockets have less overhead than INET sockets?
>
> That all depends, it can go both way's. UNIX sockets, is
> comunicatting through files. Faster way would be to
> communicate through pipe's.
I think "communication through files" is misleading.
That file is special, it is a named pipe (or named FIFO...). Just like
/dev/zero and /dev/null, and many of the other files in /dev. The
pipes always transfer data through memory.
I would hazard a guess that named pipes and anonymous pipes
are implemented using the same code. The difference is
how the connection is established.
UNIX vs INET is another story. On loopback, I guess INET would
easily achieve 100MB/sec, and I think UNIX domain sockets
would be faster still.
Jonathan Paton
--
#!perl
$J=' 'x25 ;for (qq< 1+10 9+14 5-10 50-9 7+13 2-18 6+13
17+6 02+1 2-10 00+4 00+8 3-13 3+12 01-5 2-10 01+1 03+4
00+4 00+8 1-21 01+1 00+5 01-7 >=~/ \S\S \S\S /gx) {m/(
\d+) (.+) /x,, vec$ J,$p +=$2 ,8,= $c+= +$1} warn $J,,
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