On Saturday 06 December 2003 03:28 pm, Matt Garman wrote:
> I have a 100/10 Mbps home LAN whose performance is considerably less
> than capable. The setup is as follows:
>
> - OpenBSD server with two PCI NICs (a D-Link and a Linksys).
> One NIC connects to the Internet, the other connects to the
> LAN. (This machine provides the firewall/gateway/NAT
> functions.)
> - A Linksys "Etherfast Dual-Speed 5-Port Workgroup Switch"
> - My Linux workstation. It's using an onboard 3Com 3c59x NIC
> (Asus A7N8X Deluxe motherboard)
> - My roomate's Win2k box. Also has a Linksys 100/10 PCI NIC.
>
> The best LAN transfer speeds I can get are around 230 KB/s. This is
> between Linux and OpenBSD as well as Win2k and OpenBSD. Interestingly,
> between Linux and Win2k, the speed is about half that: 130 KB/s.
>
> The Linux NIC & driver appears to be functioning correctly; I checked
> its operation with mii-diag and vortex-diag [1]. I'm not aware of
> OpenBSD NIC diagnostic tools, so I don't know how to check those NICs as
> extensively. But all three NICs (two in BSD + one in Linux) are
> operating in full-duplex 100baseTX mode.
>
> All my cables are CAT5e UTP. Just to be sure, I bought new cables.
> Transfer speeds did not improve.
>
> I tried using a cross-over cable between OpenBSD and Linux. No
> improvement.
>
> I also tried switching the roles of the BSD NICs (i.e. Internet NIC
> became DSL NIC and vice-versa). No change in transfer speeds.
>
> Short of phsically moving NICs around, I'm not sure how to futher
> diagnose the problem.
>
> Anyone have any ideas, thoughts, hints, suggestions, etc?
>
How's the data throughput of your hard drives? If it's low, having a fast
network won't make getting data off or onto the hard drives any faster.
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