On Tue, Nov 17, 2020 at 7:00 PM Daniel Sterling <sterling.dan...@gmail.com> wrote: > Wanted to give an update on this. All my issues (odd latency, slow > throughput, etc) went away when I switched from the in-kernel e1000e > driver to Intel's NAPI driver.
OK y'all, after switching to this driver, I configured my openwrt snapshot setup as follows: ** e1000e loaded with InterruptThrottleRate=0: rmmod r8169 ; modprobe r8169 rmmod e1000e ; insmod e1000e InterruptThrottleRate=0 ** All ethtool -K offloading turned off: rx tx sg tso gso gro all off ** flow control / pause frames turned off: autoneg off rx off tx off ** ring buffers set to smallest setting: rx 64 tx 64 ** byte queue limits set to 3000 echo 3000 > /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/eth1/queues/tx-0/byte_queue_limits/limit_max echo 3000 > /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/net/eth0/queues/tx-0/byte_queue_limits/limit_max cake configured with besteffort and no bandwidth limit: /usr/sbin/tc qdisc add dev $WAN handle 1: root cake besteffort internet nat egress ack-filter dual-srchost ethernet /usr/sbin/tc qdisc add dev $LAN handle 1: root cake besteffort internet ingress dual-dsthost ethernet AND ALL MY LATENCY IS GONE. I've finally experienced the Zen of low latency and high throughput of the Promised Cake. This is amazing. Previously, I was able to get low latency by setting the cake "bandwidth" setting to about 40-50mbps out of the LAN interface. Higher than that and I'd see latency. But now, I can run as fast as the wifi / wired connections allow with no latency anywhere on the network. This is truly wild. Why did no one tell me I didn't need that bandwidth setting?? I finally pushed and pushed and messed with things until I got it working this way. If this is the intended final configuration, it needs to be proselytized! Truly wire-line speed and no latency. This is just, there are no words. The dream is real Enormous thank you to everyone who worked on cake! Thanks, Dan _______________________________________________ Bloat mailing list Bloat@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/bloat
