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Date:      Thu, 1 Sep 2005 21:04:02 +0400
From:      "Eygene A. Ryabinkin" <rea@rea.mbslab.kiae.ru>
To:        Hans Petter Selasky <hselasky@c2i.net>
Cc:        hackers@freebsd.org, freebsd-usb@freebsd.org
Subject:   Re: Low umass performance with USB 2.0 ports
Message-ID:  <20050901170402.GA754@rea.mbslab.kiae.ru>
In-Reply-To: <200509011602.03079.hselasky@c2i.net>
References:  <200508302009.aa99975@nowhere.iedowse.com> <200508312239.04897.hselasky@c2i.net> <20050901093733.GA915@rea.mbslab.kiae.ru> <200509011602.03079.hselasky@c2i.net>

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> >  Oops, it seems that this patch also does not work as expected: after some
> > time of playing with flash card and working with the system it started to
> > stall as unpatched system, but it freezes the system -- even IP stack was
> > frozen (I am using DEVICE_POLLING), so I were to remove the flash from the
> > port -- system was unfrozen and continued to work. So something is still
> > bad with the USB. I'll try to do some long testing with USB 1.1 -- maybe it
> > will show the same behaviour after some more time.
> 
> Do you mean my patch? 
 Yes. And I've noticed the second, worst, thing: my cd-burner refused to
burn anything using atapi-cam. I've not tested the native atapi (via burncd),
because it is broken (at least with many new drives). After recompiling the
clean 5.x kernel the problem gone. I don't have much time today to make
experiments, but I'll try to check this issue once again.
-- 
 rea



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