> on channel 8(+4), 4.19 typically performed on par with -32 and older.
apparently only because of some fluke. the router switched to 4(+8) some
time in the past couple of days, and the newer kernels are certainly
sucking hard on that too:
---
Linux brix 4.15.0-32-generic #35~16.04.1-Ubuntu SMP Fri Aug 10 21:54:34 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
Current Frequency:2.427 GHz (Channel 4)
Link Quality=70/70 Signal level=-36 dBm
Sun 07-Oct-18 03:30
429,840,384 100% 9.00MB/s 0:00:45 (xfr#1, to-chk=0/1)
sent 429,945,420 bytes received 35 bytes 9,449,350.66 bytes/sec
---
Linux brix 4.15.0-36-generic #39~16.04.1-Ubuntu SMP Tue Sep 25 08:59:23 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
Current Frequency:2.427 GHz (Channel 4)
Link Quality=64/70 Signal level=-46 dBm
Sun 07-Oct-18 05:05
429,840,384 100% 6.46MB/s 0:01:03 (xfr#1, to-chk=0/1)
sent 429,945,420 bytes received 35 bytes 6,665,821.01 bytes/sec
---
this is a major regression. is there any activity on it upstream?
i can't imagine it's ALL wifi, or people would be screaming for blood,
but it would be good to at least get it in front of larry finger (the
rtl driver author) as a starting point.
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https://bugs.launchpad.net/bugs/1795116
Title:
large performance regression (~20-40%) in wifi with 4.15.0-33 and
later
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