High speed USB 2.0
larry at fantasyclub.ru
Tue Jun 13 15:06:02 UTC 2006
В сообщении от 13 июня 2006 18:45 Hans Petter Selasky написал(a):
> On Tuesday 13 June 2006 16:27, Василий Петров wrote:
> > В сообщении от 13 июня 2006 18:20 Hans Petter Selasky написал(a):
> > > Hi,
> > >
> > > On Tuesday 13 June 2006 15:37, Василий Петров wrote:
> > > > Do you mean you have tested with umass driver original in
> > > > 6.0-RELEASE?
> The original umass but with my USB stack.
> > > > I use this version now. Or it is already reworked some way?
> > > > So the problem in umass driver?
> > >
> > > Not really, but "umass" can be re-worked for higher performance.
> > >
> > > I hope you can wait some weeks until the work is complete.
> > Yet I don't understand, must high-speed devices work with bundled FreeBSD
> > drivers and it is my conf problem or this is not supported by them? I
> > haven't found any mentions about it in mailing lists nor PRs.
> Your config is supported by FreeBSD 6.0-RELEASE.
I've done dd tests and got VERY strange results. When I try to read from
device itself (/dev/da0 or /dev/da0s1) I have 27Mb/sec.
However when I mount NTFS partition, that resides on that drive, big file is
read from that partition at 600Kb/sec. I understand, that there is some
overhead, but not that much of course.
So it seems that problem not with USB, but with what then? NTFS driver? I
cannot test on device with FAT for now but I don't think that matter.
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