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Groups > linux.kernel > #1629470

Re: net: cleanup_net is slow

From Florian Westphal <fw@strlen.de>
Newsgroups linux.kernel
Subject Re: net: cleanup_net is slow
Date 2017-04-24 14:20 +0200
Message-ID <tzL8d-6Tf-13@gated-at.bofh.it> (permalink)
References <tyLjY-Fc-19@gated-at.bofh.it> <tyLtF-Ix-33@gated-at.bofh.it> <tyMpI-1h4-25@gated-at.bofh.it> <tyMJ4-1nm-5@gated-at.bofh.it> <tzKOT-6xT-29@gated-at.bofh.it>
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Andrey Konovalov <andreyknvl@google.com> wrote:
> On Fri, Apr 21, 2017 at 9:45 PM, Florian Westphal <fw@strlen.de> wrote:
> > Florian Westphal <fw@strlen.de> wrote:
> >> Indeed.  Setting net.netfilter.nf_conntrack_default_on=0 cuts time
> >> cleanup time by 2/3 ...
> >>
> >> nf unregister is way too happy to issue synchronize_net(), I'll work on
> >> a fix.
> >
> > I'll test this patch as a start.  Maybe we can also leverage exit_batch
> > more on netfilter side.
> 
> Hi Florian,
> 
> Your patch improves fuzzing speed at least twice, which is a great start!

Great.  I'll try to push the patches i have to nf-next ASAP.

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Thread

Re: net: cleanup_net is slow Eric Dumazet <edumazet@google.com> - 2017-04-21 20:30 +0200
  Re: net: cleanup_net is slow Florian Westphal <fw@strlen.de> - 2017-04-21 21:30 +0200
    Re: net: cleanup_net is slow Florian Westphal <fw@strlen.de> - 2017-04-21 21:50 +0200
      Re: net: cleanup_net is slow Andrey Konovalov <andreyknvl@google.com> - 2017-04-24 14:00 +0200
        Re: net: cleanup_net is slow Florian Westphal <fw@strlen.de> - 2017-04-24 14:20 +0200
  Re: net: cleanup_net is slow Dmitry Vyukov <dvyukov@google.com> - 2017-04-21 21:50 +0200

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