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Date:      Wed, 11 May 2005 21:32:18 -0500
From:      "Matthew D. Fuller" <fullermd@over-yonder.net>
To:        Pete French <petefrench@ticketswitch.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: xl(4) & polling
Message-ID:  <20050512023218.GD2624@over-yonder.net>
In-Reply-To: <E1DVoZq-0003gu-Ff@dilbert.firstcallgroup.co.uk>
References:  <4281B873.7020208@gmail.com> <E1DVoZq-0003gu-Ff@dilbert.firstcallgroup.co.uk>

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On Wed, May 11, 2005 at 11:36:30AM +0100 I heard the voice of
Pete French, and lo! it spake thus:
> > 100 should be fine. 10 would be a bit too much overkill.
> 
> I think you have this the wrong way round - the smaller this number
> is the *less* often it will poll the device. Its in hertz remember.
> So 10 is only polling ten times a second, whereas 100 is polling 100
> times a second. If you are getting dropped packets then *increase*
> the number so that it polls more often.

And, for that matter, HZ affects an awful lot of things; it's not just
a knob for network polling.  Setting it to 10 would probably have
really unpleasant side effects.


-- 
Matthew Fuller     (MF4839)   |  fullermd@over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.



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