HELP for SPEED SLOW ON WZR-HP-G300NH (OpenWrt 18.06.2)


#1

New installed OpenWrt 18.06.2 on Buffalo WZR-HP-G300NH (Hardware supports 1000Mbps both on WAN & LAN, and 300Mbps Wi-Fi)

1)LAN SPEED:About 330Mbps download speed on ASUS RT-AC66U B1 from Internet, but no more than 200Mbps download speed on WZR-HP-G300NH

2)WLAN SPEED:About 330Mbps download speed on ASUS RT-AC66U B1 from Internet, but no more than 100Mbps download speed on WZR-HP-G300NH

(Mode N, Channel 6, Width 40MHz, Transmit Power auto, Encryption WPA2-PSK, Cipher AES in LuCI)

UPLOAD SPEED is about 30Mbps, same on each router, no matter LAN of WLAN

All tests are based on 'Speedtest.net by Ookla', same remote server & same settings, Wireless speed is tested on iPhone 7 Plus

Problem of OpenWrt or WZR-HP-G300NH? How to improve?


#2

The device looks like it has a 400MHz cpu so it most likely reaches the limit of throughput rate. You can verify that by running a top command while performing the speedtest. Check the cpu utilization on the second line and pay attention to the idle % value.


#3

as flow offload is not yet available for your device (daily snpashots for now http://downloads.openwrt.org/snapshots/targets/ath79/generic/) your only chance to get higher speed with openwrt is to compile your own image with qualcomm's SFE module https://github.com/gwlim/Fast-Path-LEDE-OpenWRT


#4

Tested, about 15% idle while download speed is above 200Mbps+(WZR-HP-G300NH's WAN to AC66U B1's LAN, no PPPoE)


#5

Well, that's how it is... You can do some tweaks which might increase performance slightly but ~140-150Mbit is pretty much the limit for the AR9132 CPU and that's excluding PPPoE.


#6

with SFE patch it can do >400 mbps via pppoe and ~700mbps ipoe (simple nat)
if you can't/don't want to patch it you can try dd-wrt that has SFE included


#7

https://openwrt.org/toh/buffalo/wzr-hp-g300h
There's only 'Migrate from DD-WRT to OpenWrt', no 'Migrate from OpenWrt to DD-WRT'
How to?


#8

Instructions on "how to migrate from X to dd-wrt" would logically belong at the dd-wrt sites.

General advice is to flash back to stock manufacturer's firmware then follow dd-wrt instructions to install from stock.


#9

Many THX, and why offical OpenWrt does not include SFE/SIMPLE NAT while DD-WRT does on this device?


#10

SFE wasn't accepted by the openwrt developers.
they implemented a different technology - flow offload - available only for ath79 targets.
your router wasn't included yet in this ath79


#11

The flow-offloading infrastructure has been merged into the mainline kernel (not just OpenWrt) with kernel 4.16 (and was backported to OpenWrt's 4.14 kernel), it's available to all architectures with a current enough kernel. Maintenance for this new feature is covered by the mainline netdev developers and doesn't require the OpenWrt developers to maintain it (while SFE is an out-of-tree implementation, which would have needed constant attention by OpenWrt developers). Furthermore the flow-offloading feature provides a unified interface for software based offloading and hardware acceleration (currently only for mt7621, but AR8327N/ QCA8337N and lantiq (potentially even the ipq806x NPU/ NSS cores) would be other potential candidates).


#12

That means flow-offloading will never appear on ar71xx, or just keep waiting for future editions(including snapshot builds)?


#13

I understood all models in ar71xx will be migrated to ath79.
The developers just need time and a real device to do the porting.


#14

Netfilter Flow Offloading (in ar71xx):

snapshot v18.06 v19.03 (next release)
available yes no yes
kernel version 4.14 4.9 4.14

#15

THX, so when will v19.03 stable release be ready for users, Mar 2019?


#16

http://lists.infradead.org/pipermail/openwrt-devel/2019-February/015941.html