From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Dake Date: Fri, 11 Apr 2003 22:30:21 +0000 Subject: Re: [ANNOUNCE] udev 0.1 release Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org 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. Its even more helpful for their applications if the call that hotswap inserts blocks until the device is actually ready to use and available in the filesystem. Another requirement of any system that attempts to replace devfs would be this capability (vs constantly checking for the device in the filesystem). Greg KH wrote: >On Fri, Apr 11, 2003 at 01:29:57PM -0700, Steven Dake wrote: > > >>It gets even worse, because performance of hotswap events on disk adds >>is critical and spawning processes is incredibly slow compared to the >>performance required by some telecom applications... >> >> > >It's critical that we quick name this disk within X milliseconds after >it has been added to the system? What spec declares this? > >thanks, > >greg k-h > > > > > ------------------------------------------------------- This SF.net email is sponsored by: Etnus, makers of TotalView, The debugger for complex code. Debugging C/C++ programs can leave you feeling lost and disoriented. TotalView can help you find your way. Available on major UNIX and Linux platforms. Try it free. www.etnus.com _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel