Date: Thu, 3 Feb 2005 09:38:37 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Martin Blapp <mb@imp.ch> Cc: freebsd-current@freebsd.org Subject: Re: getline() very very slow on localhost on 5.X Message-ID: <Pine.NEB.3.96L.1050203093641.68249O-100000@fledge.watson.org> In-Reply-To: <20050203090924.G55976@cvs.imp.ch>
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On Thu, 3 Feb 2005, Martin Blapp wrote:
> Can someone confirm that this is still a problem on 6.X ? Something is
> really broken here ...
Could you:
(1) Try connecting to 127.0.0.1 instead of localhost?
(2) If the problem persists, try writing a C based client to do the same
thing?
(3) Use tcpdump on lo0 to create a packet trace?
What leads you to conclude that getline() is the problem, as opposed to
the pop server, etc?
Robert N M Watson
>
> Martin
>
> FreeBSD 5.x connecting to localhost
>
> time perl5.6.1 -MIO::Socket -e '$s = new IO::Socket::INET("localhost:110");
> $s->print("user USER\r\n");
> $s->getline(); $s->print("pass PASS\r\n"); $s->getline(); $s->print("LIST\r\n");
> for ($i = 1; $i
> < 2000; ++$i) { $j=1 + $i%500;$s->print("top $j 0\r\n"); }
> $s->print("quit\r\n"); while (defined($_
> = $s->getline())) { print $_; }' > xxx
>
> real 2m9.509s
> user 0m0.559s
> sys 0m0.184s
>
> FreeBSD 5.x connecting to the external IP of the server
>
> time perl -MIO::Socket -e '$s = new IO::Socket::INET("server:110");
> $s->print("user USER\r\n");
> > $s->getline(); $s->print("pass PASS\r\n"); $s->getline();
> $s->print("LIST\r\n");
> for ($i = 1; $i
> > < 2000; ++$i) { $j=1 + $i%500;$s->print("top $j 0\r\n"); }
> $s->print("quit\r\n"); while (defined($_
> > = $s->getline())) { print $_; }' > xxx
>
> real 0m6.932s
> user 0m0.553s
> sys 0m0.187s
>
> Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org>
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