On Tue, May 24, 2016 at 11:02 AM, Dave Taht wrote: > On Tue, May 24, 2016 at 9:56 AM, Jonathan Morton > wrote: > > > >> On 24 May, 2016, at 18:52, Dave Täht wrote: > >> > >> My last attempts with cake the way it was had it performing miserably at > >> longer RTTs (try 50ms) vs codel or fq-codel - as in half the throughput > >> achieved by codel, at that RTT. > > > > Was that before or after I found and fixed the invsqrt cache bug > yesterday? > > That was back in december, when I had also ripped out the invsqrt > cache entirely with things like "bcake". > > (I still do not see any point to the invsqrt cache, nor ) > > I did some informal testing of recent cakes about a month back.. and > went back to fq_codel. cake ate too much cpu, queue depth was longer, > throughput at 50ms or longer, worse. > > I decided that I'd much rather work on wifi. > > Please test at longer rtts. > It seems to me that fq_codel works very well. If the main issue is hash collisions, are there any plans to backport cake's "ways", which would make fq_codel pretty close to perfect as an AQM. Possibly even allow reduction of the hash-bucket sizes since they only scale with the log because of hash birthday attacks. > > > > > > - Jonathan Morton > > > > _______________________________________________ > > Codel mailing list > > Codel@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/codel > > > > -- > Dave Täht > Let's go make home routers and wifi faster! With better software! > http://blog.cerowrt.org > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake >