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> Cc: freebsd-questions@freebsd.org Subject: Re: increasing latency on idle box with ASUS P4B533VM board Message-ID: <b7052e1e050819071946bdd2d7@mail.gmail.com> In-Reply-To: <96FED1FC5340E04F9A3503FCA1CFC9DC042281F8@GALATEA.office.is.nl> References: <96FED1FC5340E04F9A3503FCA1CFC9DC042281F8@GALATEA.office.is.nl>
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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"
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