nanog mailing list archives
Re: 923Mbits/s across the ocean
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Sun, 9 Mar 2003 14:25:25 +0100 (CET)
On Sat, 8 Mar 2003, Joe St Sauver wrote:
you will see that for bulk TCP flows, the median throughput is still only 2.3Mbps. 95th%-ile is only ~9Mbps. That's really not all that great, throughput wise, IMHO.
Strange. Why is that? RFC 1323 is widely implemented, although not widely enabled (and for good reason: the timestamp option kills header compression so it's bad for lower-bandwidth connections). My guess is that the OS can't afford to throw around MB+ size buffers for every TCP session so the default buffers (which limit the windows that can be used) are relatively small and application programmers don't override the default.
Current thread:
- Re: 923Mbits/s across the ocean, (continued)
- Re: 923Mbits/s across the ocean alex (Mar 08)
- Re: 923Mbits/s across the ocean David G. Andersen (Mar 08)
- Re: 923Mbits/s across the ocean alex (Mar 08)
- Re: 923Mbits/s across the ocean Douglas F. Calvert (Mar 10)
- Re: 923Mbits/s across the ocean David G. Andersen (Mar 08)
- Re: 923Mbits/s across the ocean alex (Mar 08)
- Re: 923Mbits/s across the ocean Iljitsch van Beijnum (Mar 08)
- RE: 923Mbits/s across the ocean Cottrell, Les (Mar 08)
- RE: 923Mbits/s across the ocean alex (Mar 08)
- RE: 923Mbits/s across the ocean E.B. Dreger (Mar 08)
- RE: 923Mbits/s across the ocean Cottrell, Les (Mar 08)
- Re: 923Mbits/s across the ocean Joe St Sauver (Mar 08)
- Re: 923Mbits/s across the ocean Iljitsch van Beijnum (Mar 09)
- Re: 923Mbits/s across the ocean David G. Andersen (Mar 09)
- Re: 923Mbits/s across the ocean Iljitsch van Beijnum (Mar 09)
- RE: 923Mbits/s across the ocean Cottrell, Les (Mar 08)
- RE: 923Mbits/s across the ocean Cottrell, Les (Mar 09)
- Re: 923Mbits/s across the ocean Richard A Steenbergen (Mar 09)
- Re: 923Mbits/s across the ocean Iljitsch van Beijnum (Mar 10)
- Re: 923Mbits/s across the ocean Richard A Steenbergen (Mar 10)
- Re: 923Mbits/s across the ocean Iljitsch van Beijnum (Mar 11)
- Re: 923Mbits/s across the ocean William Allen Simpson (Mar 15)
- Re: 923Mbits/s across the ocean Richard A Steenbergen (Mar 09)
- Re: 923Mbits/s across the ocean Stephen Sprunk (Mar 11)