lkml.org 
[lkml]   [2001]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Very high bandwith packet based interface and performance problems
Date
Hello!

> > Yes its a SHOULD in RFC1122, but in any normal environment pretty much a
> > must and I know of no stack significantly violating it.
>
> I didn't know there was such a thing as a normal environment :)

Jokes apart, such "normal" environments are rare today.

From tcpdumps it is clear, that win2000 does not ack each other mss.
It can ack once per window at high load. I have seen the same behaviour
of solaris. freebsd-4.x surely does not ack each second mss
(it is from source code), which is probably bug (at least, it stops
to ack at all as soon as MSG_WAITALL is used. 8))

Acking each second mss is required to do slow start more or less
fastly. As soon as window is full, they are useless, so that win2000
is fully right and, in fact, optimal.

Alexey
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:17    [W:0.044 / U:0.608 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site