On Thu, 12 Nov 2020 14:42:59 +0100 "Thomas Rosenstein" <[email protected]> wrote:
> > Notice "Adaptive" setting is on. My long-shot theory(2) is that this > > adaptive algorithm in the driver code can guess wrong (due to not > > taking TSO into account) and cause issues for > > > > Try to turn this adaptive algorithm off: > > > > ethtool -C eth4 adaptive-rx off adaptive-tx off > > [...] > >> > >> rx-usecs: 32 > > > > When you run off "adaptive-rx" you will get 31250 interrupts/sec > > (calc 1/(32/10^6) = 31250). > > > >> rx-frames: 64 [...] > >> tx-usecs-irq: 0 > >> tx-frames-irq: 0 > >> > > [...] > > I have now updated the settings to: > > ethtool -c eth4 > Coalesce parameters for eth4: > Adaptive RX: off TX: off > stats-block-usecs: 0 > sample-interval: 0 > pkt-rate-low: 0 > pkt-rate-high: 0 > > rx-usecs: 0 Please put a value in rx-usecs, like 20 or 10. The value 0 is often used to signal driver to do adaptive. > rx-frames: 32 > rx-usecs-irq: 0 > rx-frames-irq: 0 -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
