Hi,
I recently
upgraded
my NAT box
from a
386/25 (8
Mb ram) to
a Pentium
90 (24 mb
ram). 
Overall,
the
machine is
much
faster (I
can
actually
compile
stuff in
resonable
time), but
the
network
users have
been
complaining
that
network
access
seems
slower
ever since
the
upgrade. 
I've tried
to dismiss
theese
claims as
coincidence,
but a
number of
people
have
mentioned
it to me.

So, does
anyone
have any
ideas what
might
cause
network
performance
to be
lower? 
The only
chages are
new
motherboard/processor/RAM. 
I'm using
the same
(ISA)
network
cards. 
Since most
things are
faster,
I'm
assuming
it's not a
cache or
RAM
problem. 
Does using
ISA cards
in a PCI
system
cause
extra
overhead? 
Could the
PCI-ISA
bridge be
slow or
something?  
Could the
fact that
one of the
ISA NICs
uses DMA
in a
machine
with >16Mb
ram be
causing
the
problem (I
don't
really
know how
the
bounce-buffer
stuff
works). 
I've
considered
getting a
couple of
PCI cards
now that I
have PCI
slots, but
I would
like some
idea of
whether or
not that
will solve
the
problem. 

Thanks!
	Rick