Date: Fri, 14 Dec 2001 13:17:13 -0500 (EST) From: Mike Silbersack <silby@silby.com> To: Thomas Zenker <thz@Lennartz-electronic.de> Cc: <dillon@apollo.backplane.com>, <stable@freebsd.org> Subject: Re: USB ethernet problem Message-ID: <Pine.BSF.4.30.0112141311330.29846-100000@niwun.pair.com> In-Reply-To: <20011214143752.A90727@mezcal.tue.le>
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On Fri, 14 Dec 2001, Thomas Zenker wrote: > Ok, I tried this. > > After doing some test, I decided, this can not be done with a quick > test, (because of contradictory results) so did a serie of tests. > It depends also on the transfer size (per connection). This is > obviously caused by the slowstart alghorithm. Wow! Your benchmarks contain quite a bit of useful data, and confirmed my suspicion that we should change the local slowstart flightsize to something a bit more reasonable. Also, incidently, you seem to have shown what's suggested in one of the newer rfcs - a slowstart flightsize of 1 is too small for optimal performance (they suggest something more like 4.) I think I'll go ahead and drop the local slowstart flightsize to 4 - we'll have to do some investigation later to see if raising the remote slowstart flightsize from 1 to 4 is a good idea. Once again, thanks for the high quality testing! Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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