Messages in this thread | | | From | (Eric W. Biederman) | Date | Sat, 09 May 2009 17:29:15 -0700 | Subject | Re: [PATCH] driver-core: devtmpfs - driver core maintained /dev tmpfs |
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Kay Sievers <kay.sievers@vrfy.org> writes:
> On Thu, May 7, 2009 at 10:17, Eric W. Biederman <ebiederm@xmission.com> wrote: > >> sysfs is slow. >> udev is slow. > > Everything is "slow" if you want to boot "fast". It's just numbers, > and this is more about simplicity and reliability, with just the side > effect that it's the fastest you can do, when you don't want to lose > current functionality.
My primary concern is that you are inventing a new mechanism when the existing mechanism has known issues that could explain the slowdowns.
My secondary concern is we have are adding a new mechanism when the existing mechanism has some significant known issues, that are not currently being addressed. Instead the next shiny bobble is being tackled.
Finally I am stumped how creating a couple hundred device nodes can be a significant slowdown in booting. It feels like we your patchset adds a line of code for each device node it intends to create.
>> Let's bloat the kernel to solve that problem? > > You want to add namespaces for devices to it?
I think it is a logical conclusion, and it might potentially be needed. But that is a long ways out.
Eric
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