Date: Sun, 1 Mar 2009 00:38:29 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Subject: Re: Low perfomance when read from usb flash drive Message-ID: <200903010038.29534.hselasky@c2i.net> In-Reply-To: <200903010045.44904.man@email.com.ua> References: <200903010045.44904.man@email.com.ua>
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On Saturday 28 February 2009, Artyom Mirgorodsky wrote: > Read speed when copy from usb flash drive decreased from 20MB/s (old usb > stack) to 12MB/s. (on windows above 22Mb/s). > Hi please explain what kind of test you have done. It's most likely not related to USB, but rather the file system. Maybe you can run the following test on Windows and FreeBSD to compare: dd if=/dev/da0 of=/dev/null bs=65536 --HPS
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