Re: [PATCH] Driver Core: devtmpfs - kernel-maintained tmpfs-based/dev

[Chris Friesen]

Greg KH wrote:
> On Fri, Aug 07, 2009 at 08:04:08AM +0300, Al Boldi wrote:

>> The question is, how fast can devtmpfs get the device list from the kernel on 
>> bootup?  How much faster than udev?  How much slower than static /dev?
> 
> It's much faster than udev, and is equivalent to a static /dev with the
> exception that the group and permission settings that you are used to.
> udev then needs to come along and make those settings, but that's so
> frickin fast it's amazing.

Earlier in the thread you indicated a 0.5sec speedup over udev.  Is that
really considered "much faster"?

I do agree that it makes sense to do this, but more from an elegance
view than a performance one.

Chris

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