[Bloat] WSL2 + fq_codel

[Michael Richardson]

Dave Taht via Bloat <bloat at lists.bufferbloat.net> wrote:
    > I so want to believe... I so want to believe... can anyone confirm?

    > https://raw.githubusercontent.com/microsoft/WSL2-Linux-Kernel/linux-msft-wsl-5.15.y/Microsoft/config-wsl

But, AFAIK, WSL isn't a kernel.  It's an implementation of the Linux ABI on
top of Windows service(s).  If you told me that they build some of it from
actual Linux kernel sources, I'd believe you.  (Rather like User-Mode-Linux)

If you told me that they have a kernel that they build for when they actually
spin up an actual VM (such as to run containers) that would also be unsurprising.

    > ...

    > CONFIG_NET_SCH_DEFAULT=y
    > CONFIG_DEFAULT_FQ_CODEL=y
    > # CONFIG_DEFAULT_PFIFO_FAST is not set
    > CONFIG_DEFAULT_NET_SCH="fq_codel"

It would be nice if the billion windows desktops started doing
something better, but I don't think it will help observed latency.
The real question is what the default schedule for the default Azure Linux VM
is.

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