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Date:      Thu, 20 Feb 2003 13:17:47 -0500
From:      "Will Saxon" <WillS@housing.ufl.edu>
To:        "Dan Nelson" <dnelson@allantgroup.com>
Cc:        <questions@FreeBSD.ORG>
Subject:   RE: network tuning
Message-ID:  <0E972CEE334BFE4291CD07E056C76ED8CBBC02@bragi.housing.ufl.edu>

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> -----Original Message-----
> From: Dan Nelson [mailto:dnelson@allantgroup.com]
> Sent: Thursday, February 20, 2003 12:08 PM
> To: Will Saxon
> Cc: questions@FreeBSD.ORG
> Subject: Re: network tuning
>=20
> You first need to determine what is being overloaded.  Run top.  Is
> ntop running at 100% cpu?  If so, you'll need a faster machine.  If
> it's close to 100%, bumping debug.bpf_bufsize might help. =20
> What are the
> user/system/irq CPU percentages while ntop is running?
>=20

It's pretty close to 100% all the time. I guess I am overestimating the =
horsepower of this machine.

Oddly enough, while ntop itself claims to be using 80-95% of the cpu, =
the user/system/irq generally does not add up to 100%. In fact, user is =
generally 15-20%, system is 20-50%, irq is <10% and idle is >35% all the =
time.

I set the debug_bpf_bufsize also, to 65536. No change.

Sounds like I get to spend some more money :).

-Will

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