*BSD News Article 59367


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From: casper@fwi.uva.nl (Casper H.S. Dik)
Newsgroups: comp.unix.bsd.netbsd.misc,comp.unix.bsd.bsdi.misc,comp.unix.solaris,comp.unix.aix
Subject: Re: ISP hardware/software choices (performance comparison)
Date: 17 Jan 1996 10:21:14 +0100
Organization: Sun Microsystems, Netherlands
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Terry Lambert <terry@lambert.org> writes:

>If this is true (it is disabled on the machine I can get access
>to, and I rememebr specifically disabling it -- it may have been
>enables by one of three other people), then I will retract my
>reliability claim made on the basis of assuming server cacheing.
]
How did you disable it and how did you check that it is disabled
on the machine you have access to?

>Stipulating this, however, I once again request proof that the
>5.x implementation is higher performance than the 4.x, and
>further that any performance difference is not simply the result
>of the 4.x driver's misue of the Lance buffers, as described in
>the Solaris 1.x->2.x upgrade/release notes.

LADDIS benchmark results?  And please point me to the notes on
the "3Mb/s le limit" you stae was in SunOS 4.  (Since you can easily
get tcp throughput will in excess of 3Mb/s on SunOS 4 w/ le, I
seriously doubt that claim)

>I find anything other than a marginal performance claim to be
>difficult to support without resorting to server caching or
>some other "speedup" technique which requires violation of
>the protocol spec (like the 4.x and 5.x client caching).

LADDIS doesn't benefit from client side caching.
(The LADDIS benchmark generates NFS requests itself, it
doesn't use a OS client version)

Casper

-- 
Casper Dik - Sun Microsystems - via my guest account at the University
of Amsterdam.  My work e-mail address is: Casper.Dik@Holland.Sun.COM
Statements on Sun products included here are not gospel and may
be fiction rather than truth.