Andrew

PCRE issues are not related, now it is built against libc RE support.

You need to check you provider's traffic management policies. Especially if normal connections like speed.cloudflare.com shows reasonable bw. Your sysctls wildly increase network memory usage just get rid of all...

You can try disabling various netcard transmission offloads via ethtool -k/-K So far we figured out your sysctls are not of fault as one big macro block. `nstat | grep...

Try one at the time and measure (kernel CPU consumption too) - gso off - tx off - sg off If none helps do same with rx tunables. If nothing...

The experiment plan: Stop torrent activity and keep lan-side activity low run netperf disable one of tx offloads run netperf disable another tx offload .... i.e attempt to identify damaging...

those "fixed" can not be changed. generic-segmentation-offload gso off tx-checksumming tx off scatter-gather sg off I used 10 year old still supported short aliases for those features i spotted in...

Also ethtool -a/A may help, if you get too eager pause frames ypur netcard just queues up packets without sending. ethtool eth0 to see pause status.

Run `ethtool eth0` And try to disable pause via `ethtool -a/-A` I measured a bit above subscribed speed using your command on RT-AX54 (different and slower platform) (there is no...

pause frames were not negotiated. I am out of ideas. In principle this issue is generic for the device or target with that network card, transmission was just a tool...

https://www.kernel.org/doc/html/latest/networking/device_drivers/ethernet/stmicro/stmmac.html You need to set module parameter via modules.conf/add to modules.d (sort of ethtool reported all off)