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Date:      Mon, 10 Mar 1997 21:38:32 +0100 (MET)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        bde@zeta.org.au (Bruce Evans)
Cc:        dg@root.com, bag@sinbin.demos.su, hackers@freebsd.org
Subject:   performance (was: 100 Mb/s cards)
Message-ID:  <199703102038.VAA27659@labinfo.iet.unipi.it>
In-Reply-To: <199703102014.HAA11658@godzilla.zeta.org.au> from "Bruce Evans" at Mar 11, 97 07:14:28 am

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About the following performance issue:

> >> been able to get it to work. The Pro/100B is well supported; it's what I'm
> >> using in wcarchive and I haven't had any problems. It consumes about half
> >> the CPU time that the de driver does and has about the same level of

the kernel is generally compiled with -O , I guess because of fear
of broken compiler optimizations. Would it be safe to compile
selected parts (e.g. network driver...) of relatively stable code
(so that an adequate test period could give confidence on its
performance) in the kernel with a more aggressive optimization so
as to improve performance of critical parts of the system ?

	Luigi
-----------------------------+--------------------------------------
Luigi Rizzo                  |  Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it    |  Universita' di Pisa
tel: +39-50-568533           |  via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522           |  http://www.iet.unipi.it/~luigi/
_____________________________|______________________________________



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