Not logged in
Log in now
Create an account
Subscribe to LWN
LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
PostgreSQL 9.3 beta: Federated databases and more
LWN.net Weekly Edition for May 9, 2013
(Nearly) full tickless operation in 3.10
http://en.wikipedia.org/wiki/IPv6#Features_and_difference... has a good summary of the benefits of IPv6 including this one.
Ghosts of Unix past, part 3: Unfixable designs
Posted Nov 19, 2010 1:15 UTC (Fri) by dlang (✭ supporter ✭, #313)
this isn't just that clock speeds are higher, but that the ratio of clock speeds to the system bus speeds is no longer 1:1, this means that it's possible to execute far more steps without slowing the traffic down.
Posted Nov 19, 2010 11:15 UTC (Fri) by job (guest, #670)
Posted Nov 19, 2010 11:41 UTC (Fri) by Cato (subscriber, #7643)
You can probably manage to forward anything in hardware, but it helps somewhat that IPv6 has a regular header design.
IPV6 and hardware-parseable IP headers
Posted Nov 19, 2010 23:26 UTC (Fri) by giraffedata (subscriber, #1954)
And from what I've seen, as the cost of routing in a general purpose CPU has come down, so has the cost of doing it in a specialized network link processor (what we're calling "hardware" here) -- assuming the IP header structure is simple enough. So today, as ten years ago, people would rather do routing in an ASIC than allocate x86 capacity to it.
I think system designers balance system bus and CPU speed too, so it's not the case that there are lots of idle cycles in the CPU because the system bus can't keep up with it.
Posted Dec 3, 2010 9:05 UTC (Fri) by paulj (subscriber, #341)
Copyright © 2013, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds