Date: Fri, 9 May 2014 19:47:26 +1000 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Bill Yuan <bycn82@gmail.com> Cc: "freebsd-ipfw@freebsd.org" <freebsd-ipfw@freebsd.org>, Freddie Cash <fjwcash@gmail.com>, Luigi Rizzo <rizzo@iet.unipi.it>, Chris H <bsd-lists@bsdforge.com> Subject: Re: feature of `packet per second` Message-ID: <20140509193112.M11699@sola.nimnet.asn.au> In-Reply-To: <CAC%2BJH2yff-bpivvLPEEDQQqi998cVuoO62-LMRC=607JOXEwNw@mail.gmail.com> References: <5360F1F4.9060808@gmail.com> <5361105C.1040203@freebsd.org> <53611738.8010103@gmail.com> <CAOjFWZ4zRUmcjG-r--OqoGEWcSZoWhtTykgAAHzCjoEWsMVS9g@mail.gmail.com> <53611EB1.4000406@gmail.com> <CA%2BhQ2%2BhjjS=AXVdnaEdFOKY1DqiLuX9iP0gy3wo6FbwnEdq_Qw@mail.gmail.com> <5364E097.9020106@gmail.com> <CA%2BhQ2%2BgXC9uNdtH1VCGa%2Bs1dPNWjErC9qfgXmEnfQ4SQ6Rnz_g@mail.gmail.com> <536AD13B.6080907@gmail.com> <536AD941.9090102@gmail.com> <20140508073816.GB64368@onelab2.iet.unipi.it> <536BACA4.7010702@gmail.com> <90ff4a7ff9a1d1bac510bb04fc457a91.authenticated@ultimatedns.net> <CAC%2BJH2yff-bpivvLPEEDQQqi998cVuoO62-LMRC=607JOXEwNw@mail.gmail.com>
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On Fri, 9 May 2014 11:00:55 +0800, Bill Yuan wrote: > OK then I will submit it as a patch in this weekend. [..] > > > Man page patch for PPS > > > > > > .It Cm pps Ar limit duration > > > Rule with the > > > .Cm pps > > > keyword will allow the first > > > .Ar limit > > > packets in each > > > .Ar duration > > > milliseconds. > > > > > >- and it will be like blow > > + and it will be below > > > pps _limit duration_ > > > Rule with the pps keyword will allow the first _limit > > > _packets in > > > each _duration _milliseconds. ! each _duration_ milliseconds, rounded up to the next tick (1/HZ seconds) as Luigi suggested, especially relevant for lower HZ rates than 1000, eg at 100Hz that's the next 10ms, particularly if limit were as low as 1 .. cheers, Ian
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