nanog mailing list archives
Re: 10GE TOR port buffers (was Re: 10G switch recommendaton)
From: Saku Ytti <saku () ytti fi>
Date: Sat, 28 Jan 2012 15:09:02 +0200
On (2012-01-28 21:53 +0900), Masataka Ohta wrote:
1.5MB @ 100Mbps is 120ms, which is prohibitively lengthy even as BE. The solution is to have less number of classes.
The solution is to per class define max queue size, so user with fewer queues configured will not use all available buffer in remaining queues. JNPR MX is happy to buffer >4s on 10GE on QX interfaces. Reading some posts on this thread seems to imply vendor is not knowing what they are doing, but in this case there is good reason why there is potentially lot of buffer space and it's simply operator mistake not to limit it if application is just single class in single vlan/untagged 10G interface -- ++ytti
Current thread:
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)), (continued)
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) George Bonser (Jan 29)
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) George Bonser (Jan 29)
- BDP discussion pointers: was: Re pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Jim Gettys (Jan 28)
- Re: BDP discussion pointers: was: Re pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Jim Gettys (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Leo Bicknell (Jan 27)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Ćukasz Bromirski (Jan 27)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Masataka Ohta (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Masataka Ohta (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)