Date: Tue, 27 Aug 2002 13:46:25 -0700 From: Maksim Yevmenkin <myevmenk@exodus.net> To: Julian Elischer <julian@elischer.org>, current@freebsd.org Subject: Re: USB slowdown on recent -current Message-ID: <3D6BE521.937373AE@exodus.net> References: <Pine.BSF.4.21.0208271150540.88192-100000@InterJet.elischer.org> <3D6BCEFB.4B40833A@exodus.net>
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Hackers, Replying to myself and -current. Strange, but commenting out #define USB_USE_SOFTINTR in /sys/dev/usb_ports.h fixed my problem. USB device back to full speed and now i'm getting solid ~60 KBytes/sec. Note: this is _the_only_ change i made. the rest of the code has not been changed. Hmmm.... Anyone care to comment? Maksim Yevmenkin wrote: > > Julian Elischer wrote: > > > > make sure you have all the debugging turned off. > > there is a LOT of debugging.. > > at the moment. > > well, this was my first attempt. it did not work. even if i > disable INVARIANTS, WITNESS and USB_DEBUG completely it is > still slow as hell :( > > PC-CARD driver works just fine and get 50-60 KBytes/sec even > with all debug stuff enabled. so there should be another > explanation. > > > > On Tue, 27 Aug 2002, Maksim Yevmenkin wrote: > > > > > Hackers, > > > > > > I'm currently testing my Bluetooth code for FreeBSD on recent > > > -current. After i upgraded to recent current from current-DP1 > > > i'm experiencing a major slowdown in USB device speed. > > > > > > On current-DP1 the USB device was able to handle about 50-60 > > > KBytes/sec. On recent -current _the_same_ device driver can > > > only do 11-12 KBytes/sec :( > > > > > > Another driver (PC-CARD) connected to my Bluetooth stack > > > can do 50-60 KBytes/sec (sending/receiving) - so it is > > > not a Bluetooth stack itself. Also the same USB device > > > connected to Linux box can do 50-60 KBytes/sec - so it is not > > > a USB device itself. > > > > > > The problem only exists when i connect USB device to -current > > > FreeBSD box. I suspect that problem could be in: > > > > > > a) USB device driver > > > b) USB stack itself > > > c) someplace else? > > > > > > Does anyone have a similar problems? I'm slowly going though > > > the diff's between DP1 USB code and -current USB code, but > > > may be someone can give me a clue. thanks, max To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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