netdev - Re: [PATCH net-next v2 2/2] net: sched: Lockless Token Bucket (LTB) qdisc

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Message-ID: <049a23c1-a404-60c8-9b20-1825b5319239@gmail.com>
Date:   Wed, 8 Jul 2020 14:14:03 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "YU, Xiangning" <xiangning.yu@...baba-inc.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 2/2] net: sched: Lockless Token Bucket (LTB)
 qdisc



On 7/8/20 9:38 AM, YU, Xiangning wrote:
> Lockless Token Bucket (LTB) is a qdisc implementation that controls the
> use of outbound bandwidth on a shared link. With the help of lockless
> qdisc, and by decoupling rate limiting and bandwidth sharing, LTB is
> designed to scale in the cloud data centers.
> 

Before reviewing this patch (with many outcomes at first glance),
we need experimental data, eg how this is expected to work on a
typical host with 100Gbit NIC (multi queue), 64 cores at least,
and what is the performance we can get from it (Number of skbs per second,
on a class limited to 99Gbit)

Four lines of changelog seems terse to me.