Re: Expected file transfer speeds over Gigabit?
From: Roland Hall (nobody_at_nowhere)
Date: 10/26/04
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Date: Tue, 26 Oct 2004 03:21:18 -0500
"ohaya" wrote in message news:417AF1CE.153465EC@cox.net...
: > Now tell us about the infrastructure of your interconnectivity equipment
: > since that might be where your bottleneck is and it is a controlled
: > environment or are you in the middle of production?
: >
: > I'll have additional follow-up questions after your reply.
:
:
: Hi Roland,
:
: Both machines are essentially identical, with Xeon 3.0 GHz CPUs, 16 GB
: memory and Intel 1000 NICs with latest drivers. Right now, PAE is not
: enabled in the boot.ini file because we had some problems with
: compatibility with some apps earlier, when PAE was enabled. But, thie
: current testing is being done on clean installs, with virtually nothing
: running except whatever software I use for this testing.
:
: Both machines are booted from RAID5 LUNs on a SAN (EMC Clariion). FC
: HBAs are Qlogic with PCI-X interfaces to the system.
:
: I've previously tested "drive performance" on each machines using
: HDTach3, and got ~130 Mbytes/sec burst speed and ~110 MBytes/sec average
: speed, so I think that raw drive performance shouldn't be a major
: factor.
:
: I can connect the NICs on each machine together either via a fiber
: cross-over cable or via a GigE switch (don't know the actual
: manufacturer, as I think it's a re-branded switch) for testing. Based
: on my network-only testing (e.g., Netperf), I saw about a 3-5 Mbits/sec
: difference going through the cross-over vs. the GigE switch.
:
: The two machines, network connections (e.g., cross-over or via GigE
: switch are isolated, i.e., the entire configuration is essentially
: standalone.
Which one?
http://downloadfinder.intel.com/scripts-df/Detail_Desc.asp?agr=Y&Inst=Yes&ProductID=1098&DwnldID=4233
Which driver version. The latest is not clear on this end.
The 3-5mbps difference is up or down x-over vs switch?
-- Roland Hall /* This information is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. */ Online Support for IT Professionals - http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech How-to: Windows 2000 DNS: http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201 FAQ W2K/2K3 DNS: http://support.microsoft.com/default.aspx?scid=kb;EN-US;291382
- Previous message: Roland Hall: "Re: Very slow network browsing from W2K but not NT"
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