From ruby-talk  Thu Nov 15 17:42:08 2007
From: "Caleb Tennis" <caleb () aei-tech ! com>
Date: Thu, 15 Nov 2007 17:42:08 +0000
To: ruby-talk
Subject: Re: ruby incredibly slow (update 2)
Message-Id: <38362.192.168.2.159.1195148038.squirrel () www ! aei-tech ! com>
X-MARC-Message: https://marc.info/?l=ruby-talk&m=119514860729421

> Just a SWAG, but. time ruby -rsocket -e 'p Socket.gethostbyname("127.0.0.1")'
>
> is doing a reverse-"DNS" lookup. Might windoze be confused by having
> 127.0.0.1 map to three different hostnames in the hosts file?

At least on Linux, when I've had big slowdowns like this, throwing in

BasicSocket.do_not_reverse_lookup = true

made things run much faster.

I think we've discussed this issue on the list before, too.