Messages in this thread | | | Date | Fri, 11 Apr 2003 16:32:54 -0700 | From | Steven Dake <> | Subject | Re: [ANNOUNCE] udev 0.1 release |
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Greg KH wrote:
>On Fri, Apr 11, 2003 at 03:43:12PM -0700, Steven Dake wrote: > > >>Lars Marowsky-Bree wrote: >> >> >> >>>On 2003-04-11T15:30:21, >>> Steven Dake <sdake@mvista.com> said: >>> >>> >>> >>> >>> >>>>There is no "spec" that states this is a requirement, however, telecom >>>>customers require the elapsed time from the time they request the disk >>>>to be used, to the disk being usable by the operating system to be 20 >>>>msec. >>>> >>>> >>>> >>>> >>>Heh. Yes, I've read that spec, and some of it involves some good crack >>>smoking >>>;-) The current Linux scheduler will make that rather hard for you, you'll >>>need hard realtime for such guarantees. >>> >>> >>> >>Its quite easy to do if you are not dependent upon spawning an entire >>process to execute the insertion and creation even of the device node. >> >> > >Then have the telcos live with the static /dev that they have today :) > > Unfortunately they are willing to live with devfs, but not a static /dev.... There are problems with devfs which I'm sure your well aware of which a dynamic /dev would solve... But performance is an important goal.
>There's always a price to pay for new features... > >greg k-h > >Happily using his "pleasure boating" version of Linux... > > > > >
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