Re: devfs vs udev FAQ from the other side

[Robert Love <rml@novell.com>]

On Wed, 2005-09-14 at 17:51 -0700, Mike Bell wrote:

> devfs advantages over udev:
> 1) devfs is smaller
>   Hey, I ran the benchmarks, I have numbers, something Greg never gave.

Actually, there are not many numbers in this email.

>   Took an actual devfs system of mine and disabled devfs from the
>   kernel, then enabled hotplug and sysfs for udev to run.  make clean
>   and surprise surprise, kernel is much bigger. Enable netlink stuff and
>   it's bigger still. udev is only smaller if like Greg you don't count
>   its kernel components against it, even if they wouldn't otherwise need
>   to be enabled. Difference is to the tune of 604164 on udev and 588466
>   on devfs. Maybe not a lot in some people's books, but a huge
>   difference from the claims of other people that devfs is actually
>   bigger.

What modern system, though, could survive without hotplug and sysfs and
netlink?  You need to have those components, you want those features,
anyhow.

So your comparison is unrealistic.

Your user-space argument is better.  Is ndevfs not sufficient?

	Robert Love


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