On 8/2/22 12:53, Andrew than wrote:
Hello all:
Please direct me on what additional information I can provide.
I recently added a Lenovo Ideapad to my wifi network. Two mac hosts on that
network experience no issue whatsoever with the network (desktop + macpro laptop).
A simple scp test between the desktop & macpro vs desktop & lenovo yields a 50%
difference in throughput.
Interactive performance of ssh is horrible vs the lenovo. I looked but didn't
find any TCP_NODELAY / Nagel's related settings for sshd. However, the scp
performance leads me to believe that's not the issue.
I've seen other reports of slow performance of these cards/drivers (e.g.
https://github.com/lwfinger/rtw89/issues/36)
Any ideas?
*-network
description: Wireless interface
product: RTL8852AE 802.11ax PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlo1
version: 00
serial: 14:5a:fc:01:c2:xx
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical
wireless
configuration: broadcast=yes driver=rtw89_pci
driverversion=5.17.0-1014-oem firmware=N/A ip=192.168.x.x latency=0 link=yes
multicast=yes wireless=IEEE 802.11
resources: irq:64 ioport:2000(size=256) memory:d1600000-d16fffff
I reported this at the GitHub repo, but I will put it here for others to see.
I tried your scp test with a 204 MB file. Using the 5G band on a wifi5 router
(AC1900), I got 49.2 MBps (399 Mbps) for uploads and 64.0 MBps (511 Mbps) for
downloads. The other end was a desktop connected to the network via a wire.
Using my local speedtest, I got 587 Mbps down and 481 Mbps up. With file reads
and writes, scp should be a little slower than speedtest. My signal reported by
'iw dev ... scan' is -45 dBm.
You did not tell me what your kernel is, but from the name (rtw89_pci), I see
that you are using the in-kernel version. The one from this repo, which I am
using, would be rtw89pci with no underscore.
Larry
