Hi, A thought for the list. As I mentioned in another posting, there are a lot of QoS mechanisms out there. Linux supports some, but not all. Some patchsets add others, but don't work for all kernels. There are also userland implementations, usually sitting in software routers, but there are other packages. Would it be helpful if I worked on a table of what's out there for Linux and in what form? The main drawback of such a list is that while I can tell you if such-and-such an implementation exists, that doesn't mean the implementation is any good, or that the QoS concept is valid. There are plenty of arguments amongst QoS researchers as to whether RED is useful or not, and those are the people most qualified to know the answer. Nor would I be able to verify what kernel patches work well together, so the individual existance of specific mechanisms doesn't mean you can combine them usefully. On the other hand, there doesn't seem to be any easy way for people to find out what does exist, what doesn't exist YET for Linux but could easily be written, or what used to exist but has been dropped for reasons known or unknown. For example, SGI's "Scheduled Transfer Protocol", MPLS, WRR and ESFQ are all examples of networking algorithms that are apparently deceased. The Layer 7 packet classifier isn't dead, but doesn't apply cleanly to kernels 2.6.9 or later. Finding these can be fun, too. I've got a copy of the Scheduled Transfer Protocol patches, but that's because I downloaded them while they were still on SGI's FTP site. If they exist anywhere on the Internet today, I haven't the foggiest where. The site for ESFQ is dead, and the only known patches forward-ported to recent kernels is merged into the qnet patch series, making it hard to extract. Any thoughts on this? Jonathan __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
