Re: usb mass storage bug

From: Pete Zaitcev
Date: Wed Jul 13 2005 - 00:51:47 EST


On Mon, 11 Jul 2005 20:09:58 -0700, Greg KH <greg@xxxxxxxxx> wrote:
> On Mon, Jul 11, 2005 at 01:30:47PM -0700, Joe Sevy wrote:
> > Sorry, no logs or dmesg to report; just performance.
> > Using kernel 2.6.12: USB flash drive (san-disk cruzer
> > micro) Copy FROM drive is normal and quick; copy TO
> > drive is amazingly slow. (30 minutes for 50K file).
> > Used same configuration as for 2.6.11.11. Cured by
> > going back to old kernel.
>
> Are you using CONFIG_UB or CONFIG_USB_STORAGE?

Please, Greg. I knew that someone will try to implicate ub here, but you?
Consider two things:
#1 Joe's kernel reads and writes and sharply different speeds,
while ub is uniformly slow
#2 It's a regression in 2.6.12

-- Pete
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