On Sun, Nov 11, 2018 at 11:06 AM, Neal Cardwell <ncardw...@google.com> wrote: > On Sun, Nov 11, 2018 at 9:41 AM Eric Dumazet <eduma...@google.com> wrote: >> >> tcp_tso_should_defer() first heuristic is to not defer >> if last send is "old enough". >> >> Its current implementation uses jiffies and its low granularity. >> >> TSO autodefer performance should not rely on kernel HZ :/ >> >> After EDT conversion, we have state variables in nanoseconds that >> can allow us to properly implement the heuristic. >> >> This patch increases TSO chunk sizes on medium rate flows, >> especially when receivers do not use GRO or similar aggregation. >> >> It also reduces bursts for HZ=100 or HZ=250 kernels, making TCP >> behavior more uniform. >> >> Signed-off-by: Eric Dumazet <eduma...@google.com> >> Acked-by: Soheil Hassas Yeganeh <soh...@google.com> >> --- > > Nice. Thanks! > > Acked-by: Neal Cardwell <ncardw...@google.com> Acked-by: Yuchung Cheng <ych...@google.com>
Love it > > neal
