nanog mailing list archives
Re: 10gig coast to coast
From: Valdis.Kletnieks () vt edu
Date: Tue, 18 Jun 2013 13:18:49 -0400
On Tue, 18 Jun 2013 15:53:48 -0000, James Braunegg said:
We Deal with TCP window size all day every day across the southern cross from LA to Australia which adds around 160ms... I've given up looking for a solution to get around physical physics of sending TCP traffic a long distance at a high speed....
http://www.extremetech.com/extreme/141651-caltech-and-uvic-set-339gbps-internet-speed-record It's apparently doable. ;) A quick cheat sheet for the low-hanging fruit: http://www.psc.edu/index.php/networking/641-tcp-tune Though to get to *really* high througput, you may have to play some games with TCP slow-start so it's not quite as slow (otherwise for long hauls it can take literally hours to open the window after a packet burp at 10G or higher) Also, you may want to look at CODEL or related queueing disciplines to minimize the amount of trouble that bufferbloat can cause you at high speeds.
Attachment:
_bin
Description:
Current thread:
- Re: 10gig coast to coast, (continued)
- Re: 10gig coast to coast George Herbert (Jun 17)
- Re: 10gig coast to coast Jeff Kell (Jun 17)
- Re: 10gig coast to coast Eric Clark (Jun 17)
- Re: 10gig coast to coast Phil Fagan (Jun 17)
- Re: 10gig coast to coast Eric Clark (Jun 17)
- Re: 10gig coast to coast Fred Reimer (Jun 18)
- Re: 10gig coast to coast Jakob Heitz (Jun 18)
- Re: 10gig coast to coast Phil Fagan (Jun 18)
- RE: 10gig coast to coast James Braunegg (Jun 18)
- Re: 10gig coast to coast Valdis . Kletnieks (Jun 18)
- RE: 10gig coast to coast James Braunegg (Jun 18)
- Re: 10gig coast to coast Valdis . Kletnieks (Jun 18)
- Re: 10gig coast to coast Ben Aitchison (Jun 18)