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Date: Fri, 19 Aug 2005 18:19:08 +0400
From: Dmitry Mityugov <dmitry.mityugov@gmail.com>
To: Arjan van der Oest <Arjan.van.der.Oest@is.nl>
In-Reply-To: <96FED1FC5340E04F9A3503FCA1CFC9DC042281F8@GALATEA.office.is.nl>
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Cc: freebsd-questions@freebsd.org
Subject: Re: increasing latency on idle box with ASUS P4B533VM board
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On 8/19/05, Arjan van der Oest <Arjan.van.der.Oest@is.nl> wrote:
> Hi,
>=20
> I've build a new P4 box (1.8Ghz, 512MB mem) based upon a ASUS P4B533VM
> motherboard. This board has an Intel 845G chipset and onboard 10/100
> mbit/s LAN (fxp driver).
>=20
> When connected directly to a gateway (in my case an Extreme BD10k) I
> observe the following behaviour: a ping to the gateway starts around
> 1ms and slowly increases in steps of .1 or .2ms to around 10ms. Then
> it suddenly drops back to 1ms and the process starts all over again.
>=20
> I've tried a different NIC (3com, xl driver), new cabling, new
> switchport and all gives me the same result. My other labbox (a AMD
> 2000 XP+ with 3com PCI nic) connected to the same router is showing
> normal latency. This gives me the feeling it's some sort of timing
> issue on the P4's motherboard itself.
>=20
> Has anyone seen this before? I've searched the archives and found
> little on this topic. Any tips/hints where I can seach for further
> clues?

Just a shot in the dark but is HT enabled in that P4?

--=20
Dmitry Mityugov, St. Petersburg, Russia
I ignore all messages with confidentiality statements

"We live less by imagination than despite it" - Rockwell Kent, "N by E"