Re: strange results with increased net.inet.ip.intr_queue_maxlen(solved)

2001-10-15 Thread Archie Cobbs
Mike Tancsa writes: > At 08:44 PM 10/15/2001 -0700, Archie Cobbs wrote: > >This makes sense.. and that's is exactly what queues are for: > >absorbing bursts. If you have big bursts then you'll need big > >queues.. in general this is the only reason to have them. > > The only mystery I didnt solve

Re: strange results with increased net.inet.ip.intr_queue_maxlen (solved)

2001-10-15 Thread Mike Tancsa
At 08:44 PM 10/15/2001 -0700, Archie Cobbs wrote: >This makes sense.. and that's is exactly what queues are for: >absorbing bursts. If you have big bursts then you'll need big >queues.. in general this is the only reason to have them. The only mystery I didnt solve in the end was what was genera

Re: strange results with increased net.inet.ip.intr_queue_maxlen (solved)

2001-10-15 Thread Archie Cobbs
Mike Tancsa writes: > >> Is it better for the networking layer to deal with this (potentially > >> introducing some latency) as opposed to letting the application ? > > > >But no, the network should just do "best effort".. that is, unless > >you are a telco type in which case, go back to your X.2

Re: strange results with increased net.inet.ip.intr_queue_maxlen (solved)

2001-10-15 Thread Garrett Wollman
[Quoting Archie Cobbs, I think:] >> There is probably a good paper somewhere outlining the "best effort" >> philosophy but I don't know what it is. That would be ``End-to-End Arguments in System Design'' by Jerry Saltzer, Dave Reed, and Dave Clark, one of the most influential papers ever written

Re: strange results with increased net.inet.ip.intr_queue_maxlen (solved)

2001-10-15 Thread Mike Tancsa
On Mon, 15 Oct 2001 23:00:27 + (UTC), in sentex.lists.freebsd.net you wrote: >Mike Tancsa writes: >> >If the forwarding path is maxed out, then it is the application layer's >> >responsibility to back off (think TCP). >> >> Is it better for the networking layer to deal with this (potentially