Date: Mon, 28 Sep 2009 15:27:26 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: Hans Petter Selasky <hselasky@freebsd.org> Cc: usb@freebsd.org Subject: Re: 8.0-RC1: AMD CS5536 (Geode) USB 2.0 controller strange behavour Message-ID: <20090928072726.GA75536@svzserv.kemerovo.su> In-Reply-To: <200909280849.22346.hselasky@freebsd.org> References: <20090928034208.GA64444@svzserv.kemerovo.su> <200909280849.22346.hselasky@freebsd.org>
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On Mon, Sep 28, 2009 at 08:49:21AM +0200, Hans Petter Selasky wrote: > > For USB HDD: > > > > %sysctl hw.usb.ehci.debug=15 > > hw.usb.ehci.debug: 0 -> 15 > > %date; dd if=/dev/zero bs=64k of=/dev/da0 count=100; date > > Mon Sep 28 11:25:26 KRAST 2009 > > 100+0 records in > > 100+0 records out > > 6553600 bytes transferred in 14.912198 secs (439479 bytes/sec) > > Mon Sep 28 11:25:43 KRAST 2009 > > > > The log is half-megabyte and is available here (13KB compressed): > > > > http://www.grosbein.pp.ru/ehci.log.gz > > I don't see any timeouts in there. You need to run the test until you see > something about "timeout". It's so strange... While hw.usb.ehci.debug=15 idle periods are very seldom, iostat shows nearly constat (but very slow) data rate: KB/t tps MB/s 64.00 9 0.57 64.00 9 0.57 64.00 9 0.57 64.00 9 0.57 64.00 9 0.57 No 'timeout' word in the log. It seems that debugging changes something. Eugene Grosbein
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