netdev - Re: [PATCH v2 net-next 0/3] net_sched: allow use of hrtimer slack

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Message-ID: <20200316194835.321ca9df@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 16 Mar 2020 19:48:35 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Willem de Bruijn <willemb@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH v2 net-next 0/3] net_sched: allow use of hrtimer slack

On Mon, 16 Mar 2020 19:12:48 -0700 Eric Dumazet wrote:
> Packet schedulers have used hrtimers with exact expiry times.
> 
> Some of them can afford having a slack, in order to reduce
> the number of timer interrupts and feed bigger batches
> to increase efficiency.
> 
> FQ for example does not care if throttled packets are
> sent with an additional (small) delay.
> 
> Original observation of having maybe too many interrupts
> was made by Willem de Bruijn.
> 
> v2: added strict netlink checking (Jakub Kicinski)

Thanks! I got nothing else to suggest :)