time dd if=/dev/sdg1 of=/tmp/bigFile bs=1M count=100
100+0 records in
100+0 records out
real 0m48.328s
user 0m0.000s
sys 0m1.412s
--- "Stephen J. Gowdy" <[EMAIL PROTECTED]>
wrote:
> Do you know of a reliable way to do the same thing
> on Wwindows?
>
> On Mon, 17 Jan 2005, John H. wrote:
>
> > I will post that later tonight.
> >
> > The speed, as I had mentioned before, in linux is
> more
> > like the speed with the device on my laptop, which
> is
> > 1.1. As far as specifically the mb/s, I will
> have to
> > post that tonight.
> > thanks
> >
> >
> > --- "Stephen J. Gowdy" <[EMAIL PROTECTED]>
> > wrote:
> >
> > > "nearly instant" and "BIG difference" do not
> convey
> > > any specific
> > > information. On linux you should do something
> like;
> > >
> > > time dd if=/dev/sda of=/tmp/bigFile bs=1M
> count=100
> > >
> > > to get a speed measurement. Not sure what to do
> on
> > > XP.
> > >
> > > On Mon, 17 Jan 2005, John H. wrote:
> > >
> > > > err, what have I been supplying with the
> previous
> > > > pastes in emails?
> > > >
> > > > usbview says the device is 480mb/s, but it
> goes
> > > > nowhere near as fast as in windows.
> > > >
> > > >
> > > > --- "Stephen J. Gowdy"
> <[EMAIL PROTECTED]>
> > > > wrote:
> > > >
> > > > > Hi John,
> > > > > No one can really help when you supply no
> real
> > > > > informaion.
> > > > >
> > > > > regards,
> > > > >
> > > > > Stephen.
> > > > >
> > > > > On Mon, 17 Jan 2005, John H. wrote:
> > > > >
> > > > > > this morning i copied ~50mb from the usb
> 2.0
> > > > > > thumbdrive in XP, it was nearly instant, a
> BIG
> > > > > speed
> > > > > > difference from linux, despite being
> listed as
> > > > > 480mb/s
> > > > > >
> > > > > >
> > > > > > --- "Stephen J. Gowdy"
> > > <[EMAIL PROTECTED]>
> > > > > > wrote:
> > > > > >
> > > > > > > Can you actually say how fast it is? How
> did
> > > you
> > > > > > > test it in both OSes?
> > > > > > >
> > > > > > > On Sun, 16 Jan 2005, John H. wrote:
> > > > > > >
> > > > > > > > modinfo ub
> > > > > > > > modinfo: could not find module ub
> > > > > > > >
> > > > > > > > It's as slow as it is in my usb 1.1
> > > laptop.
> > > > > > > However,
> > > > > > > > in WINXP, it's WAY faster.
> > > > > > > >
> > > > > > > >
> > > > > > > > --- Alan Stern
> <[EMAIL PROTECTED]>
> > > > > wrote:
> > > > > > > >
> > > > > > > > > On Sun, 16 Jan 2005, Stephen J.
> Gowdy
> > > wrote:
> > > > > > > > >
> > > > > > > > > > On Sun, 16 Jan 2005, John H.
> wrote:
> > > > > > > > > >
> > > > > > > > > > > My usb 2.0 devices(SD card
> reader
> > > and
> > > > > usb
> > > > > > > thumb
> > > > > > > > > > > drive), while being listed
> w/usbview
> > > as
> > > > > > > 480mb/s,
> > > > > > > > > are
> > > > > > > > > > > going around 1.1 speed.
> > > > > > > > > > >
> > > > > > > > > > > ehci-hcd is loaded, what else
> could
> > > be
> > > > > the
> > > > > > > > > problem?
> > > > > > > > > >
> > > > > > > > > > They are just slow? What speed are
> you
> > > > > > > actually
> > > > > > > > > seeing.
> > > > > > > > >
> > > > > > > > > Stephen is right. You have to be
> > > careful
> > > > > when
> > > > > > > > > talking about things like
> > > > > > > > > this. If usbview lists a device as
> > > using
> > > > > 480
> > > > > > > Mb/s
> > > > > > > > > then that's the speed
> > > > > > > > > it's using. Now maybe the
> _throughput_
> > > is
> > > > > lower
> > > > > > > > > than you expect -- but
> > > > > > > > > that's a different matter. You can
> also
> > > see
> > > > > the
> > > > > > > > > speed in
> > > > > > > > > /proc/bus/usb/devices (or wherever
> you
> > > have
> > > > > the
> > > > > > > > > usbfs filesystem mounted).
> > > > > > > > >
> > > > > > > > > A decrease in speed could be caused
> by
> > > ub
> > > > > device
> > > > > > > > > driver. Are your devices
> > > > > > > > > bound to usb-storage or to ub? If
> they
> > > are
> > > > > > > using ub
> > > > > > > > > then you have to
> > > > > > > > > disable the ub driver in the kernel
> > > > > > > configuration.
> > > > > > > > >
> > > > > > > > > > > Also, I noticed on upgrade to
> fc3,
> > > > > > > /proc/bus/usb
> > > > > > > > > was
> > > > > > > > > > > no longer mounted, so I added it
> to
> > > > > fstab.
> > > > > > > > > > >
> > > > > > > > > > > Do I need to? Can I just have
> > > > > /sys/bus/usb,
> > > > > > > > > which is
> > > > > > > > > > > up by default?
> > > > > > > > > >
> > > > > > > > > > It isn't needed for normal
> operations
> > > I
> > > > > > > believe,
> > > > > > > > > but it is very useful to
> > > > > > > > > > find out what is going on. I've
> not
> > > > > actually
> > > > > > > > > looked in /sys/bus/usb,
> > > > > > > > > > perhaps it is very similar?
> > > > > > > > >
> > > > > > > > > It doesn't matter where the usbfs
> > > filesystem
> > > > > is
> > > > > > > > > mounted; it will still
> > > > > > > > > contain the same information.
> However
> > > > > there's
> > > > > > > > > probably a lot of programs
> > > > > > > > > that expect to find it under
> > > /proc/bus/usb,
> > > > > so
> > > > > > > it
> > > > > > > > > might be a good idea to
> > > > > > > > > keep it there. (Unless Fedora 3
> > > > > deliberately
> > > > > > > has
>
=== message truncated ===
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