From: David Ahern <dsahern@gmail.com>
To: David Ahern <dsahern@gmail.com>
Cc: Erik Rull <erik.rull@rdsoftware.de>, kvm@vger.kernel.org
Subject: Re: USB Scanner
Date: Mon, 03 Jan 2011 17:21:05 -0700 [thread overview]
Message-ID: <4D2267F1.3070808@gmail.com> (raw)
In-Reply-To: <4D2260C9.60405@gmail.com>
On 01/03/11 16:50, David Ahern wrote:
>> thanks for the patch.
>> Have you tested USB transfer rates using a USB Memory Stick or something
>> similar? If yes, which transfer rates have you reached?
hmm.... more specifically, 8-11 Mbps depending on type of USB storage
device. Harddrives work better than flash.
As an example, on my Dell laptop with a T9550@2.66GHz the command:
time dd if=/dev/zero of=/tmp/junk oflag=dsync bs=1M count=256
shows the following rates:
Kingston, 8GB stick (enterprise quality versus consumer grade): 9.7 MB/sec
Seagate external drive (older, low end consumer model): 11.6 MB/sec
David
prev parent reply other threads:[~2011-01-04 0:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-03 8:41 USB Scanner Matthias Henze (L)
2011-01-03 15:43 ` Erik Rull
2011-01-03 22:59 ` David Ahern
2011-01-03 23:35 ` Erik Rull
2011-01-03 23:50 ` David Ahern
2011-01-04 0:21 ` David Ahern [this message]
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