this sounds completly bogus :) a device node is a device node...

Ake wrote:
> Hi!
> I'm experiencing something that looks like a severe slowdown of disk IO
> when going through udev (compared to when going through devfs handled
> /dev). Interrupts and context switches goes up by a factor of 4 when
> removing background noise.
> 
> Has anyone seen this?
> 
> This is a debian 2.6.5 kernel with udev 0.24 from debian.
> Using devfs mounted /dev i get around 90-100MB/s from /dev/sdb doing
> dd if=/dev/sdb of=/dev/null bs=8192k
> but using udev as /dev handler i get only 15MB/s
> 
> The devfs vs udev change is the ONLY difference here (guaranteed).
>