And felix tells me that the fq_codel fix for better backlog handling is in openwrt 31813.
This should improve performance in the case of various forms of flooding, and probably, bittorrent. I've heard a rumor that codel (I don't know about fq_codel, don't have a ns3 simulation yet) is slightly more controlling of TCP reno, than TCP cubic. This is not a disadvantage, in my mind! as the only thing these days that uses a reno-like system is uTP. Would love some data. I'd intended to setup bittorrent seeder of things like the gutenberg library to take a look at these characteristics, but I'll do that next week, unless someone beats me to it. The openwrt buildbot system is running a little slow these days, while I've donated a machine to the effort, and am hoping to add a second, more would be nice to have. Me, I'm taking the first long weekend off I've had in a year, and going to the Maker Faire, in San Mateo. Should be some pretty nice toys to see, there. But hopefully, builds should be available on Sunday for all platforms. Still a few patches left to come... On Fri, May 18, 2012 at 2:36 PM, Dave Taht <[email protected]> wrote: > On Fri, May 18, 2012 at 1:56 PM, Jonathan Morton <[email protected]> > wrote: >> >> On 14 May, 2012, at 4:55 pm, David Woodhouse wrote: >> >>>> So I repeat my question: where can I reliably go and buy a DSL modem >>>> that I can put Linux on? It probably helps to mention that I'm in >>>> Finland, so a European (or at least British) reseller is preferable. >>> >>> If the Geos or Solos are too expensive, I'd be looking for other ADSL >>> devices supported by OpenWrt. Probably Lantiq-based. The Netgear >>> DGN3500B perhaps (see recent traffic on openwrt-devel). >> >> The 3700 is back-ordered by weeks, and the 3800 doesn't have a modem, and >> the 3500 isn't even in the local catalogues. Netgear doesn't seem to be >> well regarded over here, even by the hacker types - and you *know* we have >> hacker types aplenty. >> >> I double-checked all my hardware again, and while I can technically get >> OpenWRT on my D-Link modem, it can't actually drive the *modem* part because >> Broadcom is mean and stingy. >> >> After biting the bullet and going through the local retailers' catalogues >> with a fine-toothed comb, I eventually found this - a fine specimen as far >> as hardware specs goes: >> >> http://www.jimms.fi/tuote/WBMR-HP-G300H-EU >> >> It happens to be Lantiq based, and so OpenWRT shows full support for it: >> >> http://wiki.openwrt.org/toh/buffalo/wbmr-hp-g300h >> >> Jimm's is transitioning to a purely mail order system and is based in a >> different city, but it turned out that my local megahypersuperretailer had >> just got a batch in stock, so I got one from there. >> >> Well, this should be fun. > > As noted elsewhere, fq_codel is now the default qos system in openwrt > as of build 31761 > > http://buildbot.openwrt.org:8010/one_line_per_build > > 37 arches, 150 platforms, no waiting. > > There are still a few patches left to land, and it doesn't turn it on > on the wireless or ethernet by default, although it should definitely > do so, in the case of the latter, and well, it helps a bit on > wireless, too, although major surgery on the stack remains to get it > right. > > And codel + QFQ remains interesting. > > I look forward to hearing about your results. > >> - Jonathan Morton >> > > > > -- > Dave Täht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://www.bufferbloat.net -- Dave Täht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
