David Brownell wrote:
> Yeouch!  Microsoft's EHCI drivers?  From what OS version?
> Identical hardware in both cases?

So i did the test:

Hardware: USB 2.0 storage (supporting max sectors = 240) connected to
usb extension PCI card.
Tested Partition: Partition 1 (18GB), FAT32
Filesize: 799MB

1: Windows 2000
with driver for pci card from vendor,
driver for usb storage from microsoft.

2: Linux 2.6.0-test9
usb storage max sectors = 240

Perhaps the result times aren't so accurate, but i know, there was a big
difference.

----

Now i tested again with my other usb 2.0 storage but with a sector count
of only 128 and the benchmark results don't differ so much as before:

Windows 2000: 1 test: 60 sec, 2 test: 65 sec.
Linux: 1 test : 57 sec, sync, 2 test: 57 sec.

----

I made my first benchmark with an usb storage supporting 240 sectors,
i guess that was the reason for being much faster than windows, or this
was *really* good hardware and my other usb storage is buggy.
My second benchmark was made with max sectors = 120, but this is faster
than windows 2000 yet:-)

> Scarey though,
> given how many vendor only test against Windows and who may
> accordingly be shipping more such bugs in their products.

Yes, i guess it's a hardware bug:-(

regards,
hampel




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