and we get about 65MB/sec sustained when writing to an ext3 filesystem (actually, when wgetting a file off the gigabit LAN :-) ). I haven't
Well, unless you have PCI 64 bits, the "standard" PCI does 133 MB/s which is then split exactly in two times 66.5 MB/s for 1) reading from the PCI network card and 2) writing to the PCI harddisk controller. No wonder you get this figure, you're able to saturate your PCI bus, but it does not tell you a thing on the performance of your disk or network card... Note that the server which serves the file is limited in the same way unless the file is in cache (RAM) or it's PCI64. So...
tested reading, though.
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