[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: Why is my gigabit ethernet so slow?
On Wed, Jan 27, 2010 at 09:03:14PM -0500, Steven Bellovin wrote:
> Sack is mostly of benefit on LFNs (Long, Fat, Networks). On a LAN or
> pair of LANs, it won't matter much, I suspect. SACK is "selective
> acknowledgment" -- it can resend just the missing segments, rather
> than everything from the missing segment on forwards. But that's only
> of interest if there are packet drops, and with few routers, little
> congestion, and steady-state sending, those more or less should not
> happen very often.
I wonder if it would make sense for the kernel to keep a list of
networks to disable SACK on, or look at TTL values to determine that.
Aaron J. Grier | "Not your ordinary poofy goof." |
Main Index |
Thread Index |