Date: Tue, 30 Apr 1996 02:44:08 -0700 (PDT) From: Brian Litzinger <brian@MediaCity.com> To: angio@aros.net (Dave Andersen) Cc: freebsd-questions@FreeBSD.org Subject: Re: IP aliases and delays Message-ID: <199604300944.CAA06515@MediaCity.com> In-Reply-To: <199604300641.AAA26399@terra.aros.net> from Dave Andersen at "Apr 30, 96 00:41:22 am"
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Dave Andersen wrote: > > Why bother? FreeBSD allows you to alias an arbitrary number of addresses > > to an interface, so dummy interfaces are completely unnecessary. > > On the stupid question front, I'm wondering if anyone's actually looked > at the kind of degredation you get with packet response times on aliased > interfaces? > > To wit: On a linux 1.2.13 with aliasing, the 130th alias takes ~3ms > longer to ping on a local ethernet than the interface address itself. > (4.5ms vs 1.5ms). I don't have enough aliases on the freebsd boxes to > test this (and they're 'production' so I'm not in the mood to play with > them. :), so I'm curious if someone's actually looked at it? ping True Ip: 1.592ms 157th alias: 2.556ms Machine is an P5-75 with DEC 21040 ethernet interface. Brian Litzinger brian@mediacity.com
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