Excerpt from Q1CY97 #49
------------
Q. How many cards can I put in a system?
A. The system should have one CPU per FastEthernet port on the QFE card
(i.e., 4 Ports equal 4 CPUs). This provides the highest speed
performance possible.
------
And also sells more CPUs. Neat trick. Look at the last phrase again..
I can't believe that Sun actually recommends this.. Their sales guys
might..
> -----Original Message-----
> From: Feroz .
Khan @
VECTOR .
CO .
ZA [SMTP:Feroz .
Khan @
VECTOR .
CO .
ZA]
> Sent: Tuesday, August 19, 1997 4:48 AM
> To: Firewalls @
GreatCircle .
COM; Jerald .
Josephs @
Ebay .
Sun .
COM
> Subject: Re: Firewalls-Digest V6 #395
>
> Hi,
>
> I Wrote:
> > jj> Sun Recommends atleast one CPU per port on the Quad 10/100
> Card.
> > jj>
> > jj> Feroz
> > jj>
> >
> > Really?
> > Could you assist me by pointing me to the source of this
> information?
>
> I am referring to the use of two 10/100BaseT Quads with Solaris and
> not the
> old 10BaseT Quad.
>
> My Source is the Product Announcement Information on the "Sun Quad
> FastEthernet SBUS Network Interface Card (Q1CY97 #49). I enclose an
> excerpt
> from the Question and Answers section (without permission from
> anyone).
>
> QUESTIONS AND ANSWERS
> ---------------------
>
> Q. How many cards can I put in a system?
>
> A. The system should have one CPU per FastEthernet port on the QFE
> card
> (i.e., 4 Ports equal 4 CPUs). This provides the highest speed
> performance possible.
>
>
> > I have installed a single quad ethernet board into Sparc 5's,
> Ultra1's and other
> > platforms with only one CPU.
>
> I have also installed multiple 10BaseT Quads without too much of a
> a performance impact. However, I have not had the oppurtunity to
> test
> multiple 10/100BaseT Quads :(( as yet.
> >
> > It is necessary to install the qe0 driver patch in order to get the
> card to
> > operate efficiently, if not properly
> >
> > I have been out of the technical support arena for about 9 months,
> but I have
> > never heard anywhere from within Sun that it is recommended to
> install CPU for
> > each active port on a Quad Ethernet 10/100 card.
> >
> > You suggest that "at least" one is necessary.
> >
> > Wow. That's alot of CPU power just to route traffic down in the IP
> kernel
> > module. Stuff down there (I believe) doesn't get distributed among
> CPUs. As I
> > understand it, kernel processes are allocated to one CPU, leaving
> the others
> > to handle the application layer.
>
> Feroz
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