On Sun, Nov 11, 2001 at 04:07:04PM -0500, Jason Tackaberry wrote: > Hi Bert, > > On Sun, 2001-11-11 at 15:36, bert hubert wrote: > > In other news, I added a section on HTB, > > http://ds9a.nl/2.4Routing/HOWTO//cvs/2.4routing/output/2.4routing-10.html#ss10.2 > > which you should read if you thing CBQ is complicated. And I added a link to > > docum.org, which you should visit. > > According to the HTB patch, HTB stands for Hierarchical Token Bucket. Ah! I looked a bit, but not too well it appears. Will update the HOWTO. > I guess the impression I get from what you wrote is that HTB is good in > simple cases, and CBQ is good in complex cases? It might be worth > explaining a situation in which HTB is inadequate but CBQ would do the > job. I'm not totally clear on that. :) Hmm, well, I'm trying very hard to understand CBQ because I need to give a lecture about it. And I am not succeeding. HTB currently has some performance design issues, which you can read on the site I mention in the HOWTO, but these appear to be resolveable. Right now, if your link sharing needs can be handled by CBQ.init (also mentioned in the HOWTO), by all means use it. I suspect CBQ may scale better to larger amounts of bandwidths and complexer situations. However, if what you want is too difficult for CBQ.init and you have to type the scripts by hand, HTB wins -hands down-. HTB will get there (it is not yet in the kernel for example), but may have some problems today - although authors tend to overestimate the problems their inefficiencies will cause. Right now HTB is polled too often to see if it has a packet available. But just try it! http://luxik.cdi.cz/~devik/qos/htb/ The patch is very modular and does not touch other parts of the kernel. In fact, it could be distributed as a separate program, you just need to have the kernel headers available. Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services Trilab The Technology People Netherlabs BV / Rent-a-Nerd.nl - Nerd Available - 'SYN! .. SYN|ACK! .. ACK!' - the mating call of the internet
