Mikael Abrahamsson via Bloat <bloat@lists.bufferbloat.net> writes: > Hi, > > I migrated to an APU2 (https://www.pcengines.ch/apu2.htm) as residential > router, from my previous WRT1200AC (marvell armada 385). > > I was running OpenWrt 18.06 on that one, now I am running latest 19.07.3 > on the APU2. > > Before I had 500/100 and I had to use FQ_CODEL because CAKE took too much > CPU to be able to do 500/100 on the WRT1200AC. Now I upgraded to 1000/1000 > and tried it again, and even the APU2 can only do CAKE up to ~300 > megabit/s. With FQ_CODEL I get full speed (configure 900/900 in SQM in > OpenWrt). > > Looking in top, I see sirq% sitting at 50% pegged. This is typical what I > see when CPU based forwarding is maxed out. From my recollection of > running CAKE on earlier versions of openwrt (17.x) I don't remember CAKE > using more CPU than FQ_CODEL. > > Anyone know what's up? I'm fine running FQ_CODEL, it solves any > bufferbloat but... I thought CAKE supposedly should use less CPU, not > more?
Hmm, you say CAKE and FQ-Codel - so you're not enabling the shaper (that would be FQ-CoDel+HTB)? An exact config might be useful (or just the output of tc -s qdisc). If you are indeed not shaping, maybe you're hitting the issue fixed by this commit? https://github.com/dtaht/sch_cake/commit/3152477235c934022049fcddc063c45d37ec10e6n -Toke _______________________________________________ Bloat mailing list Bloat@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/bloat
