Date: Tue, 3 Mar 2009 11:30:35 +0200 From: Artyom Mirgorodsky <man@email.com.ua> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: Low perfomance when read from usb flash drive Message-ID: <200903031130.35613.man@email.com.ua> In-Reply-To: <200903030850.01866.hselasky@c2i.net> References: <200903010045.44904.man@email.com.ua> <200903022320.31592.man@email.com.ua> <200903030850.01866.hselasky@c2i.net>
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>I know that certain AMD USB controllers perform less with the new USB stack, >but I've not been able to track down the issue. Yes, I have AMD platform (motherboard ASUS A8N-VM-CSM) >Can you try another PC having another CPU brand? Yes, I have already posted the result - 22 Mb/sec, much better than on my computer. >There might be some minor things that needs tuning like the NAK retry counter. >I suspect you have run into a timing issue with the hardware. Can I do anything to solve this problem or at least help you to track it down?
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