Hi Toke,
> On Dec 9, 2020, at 11:52, Toke Høiland-Jørgensen via Bloat > <[email protected]> wrote: > > Kenneth Porter <[email protected]> writes: > >> <https://forum.openwrt.org/t/why-you-need-at-least-3mbps-upload-to-get-good-game-performance-with-1500byte-packets-doing-the-math/81240> >> >> Upstream article: >> >> <http://models.street-artists.org/2020/12/05/why-gaming-on-a-dsl-line-is-terrible-and-the-math-says-theres-nothing-you-can-do-about-it/> > > Good points, but doesn't mention options to decrease the packet size > (lower MTU/MSS clamping)... :) But he is doing exactly that in the script he developed for OpenWrt games on poor links: https://github.com/dlakelan/routerperf/blob/master/SimpleHFSCgamerscript.sh iptables -t mangle -F FORWARD # to flush the openwrt default MSS clamping rule if [ $UPRATE -lt 3000 ]; then ipt64 -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -o $LAN -j TCPMSS --set-mss 540 fi if [ $DOWNRATE -lt 3000 ]; then ## need to clamp MSS to 540 bytes in both directions to reduce ## the latency increase caused by 1 packet ahead of us in the ## queue since rates are too low to send 1500 byte packets at acceptable delay ipt64 -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -o $WAN -j TCPMSS --set-mss 540 fi We are actually trying to get something along that lines packaged as a script for sqm-scripts, but that is delayed since I need to fix some iptables stuff that seems to not work anymore first.... > > -Toke > _______________________________________________ > Bloat mailing list > [email protected] > https://lists.bufferbloat.net/listinfo/bloat _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
