[RndTbl] Ryzen latency (was: Reddit - networking - Can a BSD system replicate the performance of high-end router appliance?)

Trevor Cordes trevor at tecnopolis.ca
Thu Nov 16 23:53:22 CST 2017

On 2017-11-16 Kevin McGregor wrote:
> The question is, which (types of) applications have sucky performance
> specifically because of this? It may be a perfectly reasonable design
> choice for some/many use cases.

Possibly.  Adam's article actually c&p'ed the ryzen paragraphs from
other (game-centric) ryzen articles (or vice-versa?).

However, none of the articles I read tell me what the upside is... they
just list the downside (latency).  I assume AMD chose bandwidth over
latency, so one would hope the bw would be much higher on ryzen to
compensate for latency.  Then your app will dictate whether ryzen or
xeon is better.

As Adam said, one would hope AMD made this design decision on purpose,
rather than as a mistake.  As a mistake, think lack of barrel shifter
on P4's.  No one said chip designers are perfect... so I wouldn't be
too surprised either way.

I stopped caring about that "last tiny bit of performance" about 10
years ago.  If my next workstation is around 8X faster than my current
one for my workload, then I don't really care if it is actually 7X or
9X, as long as the price is semi-affordable.  And I get ECC.  And I get
a x16/x16 slot for discrete graphics.

More information about the Roundtable mailing list