Re: cvs commit: src/sys/conf options src/sys/netinet ip_output.c
On Tue, 25 Mar 2003, Sam Leffler wrote:
> > I've been pondering where the tradeoff between avoiding memory copies and
> > doing excessive scatter / gather DMA lies. Perhaps we should be
> > defragmenting any chain over a certain amount of length, no matter the
> > limit imposed by the card. This sounds like a Terry question. :)
> I hit this in fast ipsec. I do "agressive coalescing" when creating
> writable mbuf chains on output. It's a big win for various things. Full
> results will be in the paper I'm writing for bsdcon.
I look forward to reading about your results.
Is your "agressive coalescion" function ready for more general use?
Mike "Silby" Silbersack
Received on Tue Mar 25 2003 - 18:18:07 UTC