From owner-freebsd-questions Thu Jun 13 18:44:18 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id SAA24153 for questions-outgoing; Thu, 13 Jun 1996 18:44:18 -0700 (PDT) Received: from palmer.demon.co.uk (palmer.demon.co.uk [158.152.50.150]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id SAA24089 for ; Thu, 13 Jun 1996 18:43:35 -0700 (PDT) Received: from palmer.demon.co.uk (localhost [127.0.0.1]) by palmer.demon.co.uk (sendmail/PALMER-1) with ESMTP id CAA07124; Fri, 14 Jun 1996 02:43:18 +0100 (BST) To: bill@twwells.com (T. William Wells) cc: freebsd-questions@FreeBSD.ORG From: "Gary Palmer" Subject: Re: performance effects of many interface addresses? In-reply-to: Your message of "13 Jun 1996 21:23:25 EDT." <4pqeud$ohs@twwells.com> Date: Fri, 14 Jun 1996 02:43:18 +0100 Message-ID: <7122.834716598@palmer.demon.co.uk> Sender: owner-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk T. William Wells wrote in message ID <4pqeud$ohs@twwells.com>: > I was just doing the programming to allow another class C address > for use by our Web server and was wondering: just how is having > some 250 addresses on an ethernet interface going to affect my > machine? Could this be related to the transfer speed problem I > described in a previous message? Not unless you have a very slow processor. The overhead of additional aliased addresses has been proven to be minimal. Someone aliased over 4000 addresses to an ethernet interface and eventually stopped because he got bored! Also, the overhead only counts when you have to search the alias list. If you are doing transfers through the main IP address, the transfer rate shouldn't be affected (if I remember right) Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info