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Date:      Tue, 19 Jan 2016 20:38:03 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        Adrian Chadd <adrian.chadd@gmail.com>, Ryan Stone <rysto32@gmail.com>
Cc:        "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r294327 - in head/sys: dev/cxgb dev/cxgbe dev/e1000 dev/hyperv/netvsc dev/ixgbe dev/mxge netinet sys
Message-ID:  <569E909B.60506@selasky.org>
In-Reply-To: <CAJ-Vmoki0yCU-mmPGfrGyJ_ar_=KKkto_ioomo_Ri_HCWR70cg@mail.gmail.com>
References:  <201601191533.u0JFXSxf037804@repo.freebsd.org> <CAFMmRNz3uXim3H3-sGuBUBs45Jy8p260ywothgp4iFkUcnvnEw@mail.gmail.com> <569E6A38.8080108@selasky.org> <CAFMmRNx3zC=mz=TC2Aq5==a5vh0Fqzv1domrCL2uUHnjybZSkQ@mail.gmail.com> <CAJ-Vmoki0yCU-mmPGfrGyJ_ar_=KKkto_ioomo_Ri_HCWR70cg@mail.gmail.com>

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On 01/19/16 20:26, Adrian Chadd wrote:
> Well, why are you using qsort to do it, rather than walking the list
> of streams and inputting all the mbufs per stream?
>
> That's an O(1) operation.
>

Because you don't know when the stream ends and then you'll need to pass 
the list one time for every stream which is O(N*N) :-)

--HPS




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