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Date:      Fri, 12 Jul 2002 06:56:47 +0200
From:      Thierry Herbelot <thierry@herbelot.com>
To:        David Schultz <dschultz@uclink.Berkeley.EDU>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: tuning(7) request was: Re: Performance boost with kernel options in  FBSD 4.6
Message-ID:  <3D2E618F.DFA1AC18@herbelot.com>
References:  <20020710104730.L10343-100000@klima.physik.uni-mainz.de> <04a601c228dc$c6dbb980$681663cf@icarz.com> <200207111930.g6BJUX5m096974@apollo.backplane.com> <3D2DF09C.B553DE07@herbelot.com> <20020711232540.GA1437@HAL9000.wox.org>

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David Schultz wrote:
> 
> Sure modern processors can handle 5000 Hz at the expense of a few
> CPU cycles, but do you actually find that dummynet isn't accurate
> enough at 1000 Hz?

for most applications, dummynet is perfect with its 1ms granularity

there are other applications (typically packet blasters) which can use a
better time accuracy (this is even better when the internal clocked is
slaved to GPS with NTP : you can then have near perfect network
transaction replay)

	TfH

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