netdev - Re: [PATCN v2 net-next] net_sched: gen_estimator: complete rewrite of rate estimators

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Message-ID: <1480871454.18162.463.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Sun, 04 Dec 2016 09:10:54 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>, netfilter-devel@...r.kernel.org
Subject: Re: [PATCN v2 net-next] net_sched: gen_estimator: complete rewrite
 of rate estimators

On Sat, 2016-12-03 at 23:18 -0800, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> 1) Old code was hard to maintain, due to complex lock chains.
>    (We probably will be able to remove some kfree_rcu() in callers)
> 
> 2) Using a single timer to update all estimators does not scale.
> 
> 3) Code was buggy on 32bit kernel (WRITE_ONCE() on 64bit quantity
>    is not supposed to work well)

A v3 is under way, fixing a last "make htmldocs" warning.