Re: Restructuring ARP cache

[David Young <dyoung%pobox.com@localhost>]

On Mon, Aug 17, 2015 at 06:23:14PM +0900, Ryota Ozaki wrote:
> Hi,
> 
> Here is a new patch that restructures ARP caches, which
> aims for MP-safe network stack:
> http://www.netbsd.org/~ozaki-r/lltable-arpcache.diff
> (https://github.com/ozaki-r/netbsd-src/tree/lltable-arpcache)

I don't think that through this piecemeal approach, NetBSD can achieve a
maintainable, MP-safe network stack that is competitive in performance
with the other stacks out there.

To put this into the old formula, you may pick three: piecemeal,
maintainable, MP-safe, performance.

I think it's important to take several steps toward simplicity before
anything else.  Neither simplicity nor MP-safety are compatible with a
network stack shot through with caches like NetBSD's stack is, now.

Dave

-- 
David Young
dyoung%pobox.com@localhost    Urbana, IL    (217) 721-9981