> On 13 Dec, 2019, at 3:43 pm, Thibaut <ha...@slashdirt.org> wrote: > > I've been using CAKE on my DSL-connected Linux router for the last few years, > and it worked well until very recently. Two things happened: > > 1) My ISP (French "Free") switched my DSLAM to native IPv6, which for the > time being means that I had to revert to using their set-top-box (Freebox) > instead of the VDSL2 model I was using in bridge mode until then (CAKE in > "bridged-ptm ether-vlan" mode) > 2) I upgraded my router from 3.16 (Devuan Jessie) to 4.9 (Devuan ASCII) > > Since then, no matter which setup I use, I cannot get CAKE to work as > intended. Specifically, any long-standing best effort stream (such as a > remote rsync) will be throttled to a near grinding halt even though there is > no other significant traffic going on. Some random bursts can be seen (with > iftop) but nothing ever gets close to half the maximum bandwidth. This is > notably affecting the OpenWRT buildbots I'm hosting on this link.
Old kernels, including 4.9 series, tend to be more problematic than the latest ones. If you can, I would recommend updating to a 5.x series kernel, in which Cake is an upstream feature. I won't presume to guess how best to achieve that with your distro. The good news is that Free.fr is among the relatively few ISPs who have actively tackled bufferbloat themselves. As a workaround while you sort this out, you should get reasonable performance just from using the Freebox directly. - Jonathan Morton _______________________________________________ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
