Re: [RFC PATCH 00/30] Kernel NET policy

From	Florian Westphal <fw@strlen.de>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH 00/30] Kernel NET policy
Date	2016-07-18 17:20 +0200
Message-ID	<rWiuR-7Ug-13@gated-at.bofh.it> (permalink)
References	<rWhIu-7l8-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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kan.liang@intel.com <kan.liang@intel.com> wrote:
> From: Kan Liang <kan.liang@intel.com>
> 
> It is a big challenge to get good network performance. First, the network
> performance is not good with default system settings. Second, it is too
> difficult to do automatic tuning for all possible workloads, since workloads
> have different requirements. Some workloads may want high throughput.

Seems you did lots of tests to find optimal settings for a given base
policy.

What is missing in the kernel UAPI so userspace could do these settings
on its own, without adding this policy stuff to the kernel?

It seems strange to me to add such policies to the kernel.
Addmittingly, documentation of some settings is non-existent and one needs
various different tools to set this (sysctl, procfs, sysfs, ethtool, etc).

But all of these details could be hidden from user.
Have you looked at tuna for instance?

Thread

[RFC PATCH 00/30] Kernel NET policy kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 10/30] net/netpolicy: introduce netpolicy object kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 20/30] net/netpolicy: introduce per socket netpolicy kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 28/30] net/netpolicy: optimize for queue pair kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 29/30] net/netpolicy: limit the total record number kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 30/30] Documentation/networking: Document net policy kan.liang@intel.com - 2016-07-18 16:30 +0200
    Re: [RFC PATCH 30/30] Documentation/networking: Document net policy Randy Dunlap <rdunlap@infradead.org> - 2016-07-18 19:10 +0200
  [RFC PATCH 24/30] net/netpolicy: set rx queues according to policy kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 23/30] i40e/ethtool: support RX_CLS_LOC_ANY kan.liang@intel.com - 2016-07-18 16:30 +0200
    Re: [RFC PATCH 23/30] i40e/ethtool: support RX_CLS_LOC_ANY Alexander Duyck <alexander.duyck@gmail.com> - 2016-07-18 18:30 +0200
  [RFC PATCH 14/30] net/netpolicy: add MIX policy kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 19/30] net/netpolicy: implement netpolicy register kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 27/30] net/netpolicy: fast path for finding the queues kan.liang@intel.com - 2016-07-18 16:30 +0200
  [RFC PATCH 09/30] net/netpolicy: enable and disable net policy kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 18/30] net/netpolicy: handle channel changes kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 08/30] net/netpolicy: set and remove irq affinity kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 16/30] net/netpolicy: net device hotplug kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 04/30] net/netpolicy: get driver information kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 15/30] i40e/netpolicy: add MIX policy support kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 05/30] i40e/netpolicy: implement ndo_get_irq_info kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 11/30] net/netpolicy: set net policy by policy name kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 01/30] net: introduce NET policy kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 03/30] i40e/netpolicy: Implement ndo_netpolicy_init kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 17/30] net/netpolicy: support CPU hotplug kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 02/30] net/netpolicy: init NET policy kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 06/30] net/netpolicy: get CPU information kan.liang@intel.com - 2016-07-18 16:40 +0200
  [RFC PATCH 07/30] net/netpolicy: create CPU and queue mapping kan.liang@intel.com - 2016-07-18 16:40 +0200
  Re: [RFC PATCH 00/30] Kernel NET policy Florian Westphal <fw@strlen.de> - 2016-07-18 17:20 +0200
    Re: [RFC PATCH 00/30] Kernel NET policy Andi Kleen <andi@firstfloor.org> - 2016-07-18 17:50 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Cong Wang <xiyou.wangcong@gmail.com> - 2016-07-18 20:00 +0200
        Re: [RFC PATCH 00/30] Kernel NET policy Cong Wang <xiyou.wangcong@gmail.com> - 2016-07-18 22:20 +0200
          RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 22:30 +0200
        RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 22:20 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-07-18 21:10 +0200
        Re: [RFC PATCH 00/30] Kernel NET policy Andi Kleen <andi@firstfloor.org> - 2016-07-18 21:50 +0200
          Re: [RFC PATCH 00/30] Kernel NET policy Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-07-19 00:00 +0200
            RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-19 03:50 +0200
              Re: [RFC PATCH 00/30] Kernel NET policy David Miller <davem@davemloft.net> - 2016-07-19 07:10 +0200
                RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-19 15:50 +0200
    RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 18:00 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Florian Westphal <fw@strlen.de> - 2016-07-18 18:20 +0200
        RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 19:50 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Tom Herbert <tom@herbertland.com> - 2016-07-18 18:40 +0200
        RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 20:00 +0200
  Re: [RFC PATCH 00/30] Kernel NET policy Daniel Borkmann <daniel@iogearbox.net> - 2016-07-18 18:30 +0200
    RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 20:40 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Daniel Borkmann <daniel@iogearbox.net> - 2016-07-18 23:00 +0200
  Re: [RFC PATCH 00/30] Kernel NET policy Alexander Duyck <alexander.duyck@gmail.com> - 2016-07-18 19:10 +0200
    RE: [RFC PATCH 00/30] Kernel NET policy "Liang, Kan" <kan.liang@intel.com> - 2016-07-18 21:50 +0200
      Re: [RFC PATCH 00/30] Kernel NET policy Andi Kleen <andi@firstfloor.org> - 2016-07-18 22:00 +0200

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