From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Ciarrocchi Date: Tue, 15 Feb 2005 08:33:31 +0000 Subject: Re: [OT] speeding boot process (was Re: [ANNOUNCE] hotplug-ng 001 release) Message-Id: <4d8e3fd305021500333835935e@mail.gmail.com> List-Id: References: <20050211004033.GA26624@suse.de> <420C054B.1070502@downeast.net> <20050211011609.GA27176@suse.de> <1108354011.25912.43.camel@krustophenia.net> <4d8e3fd305021400323fa01fff@mail.gmail.com> <42106685.40307@arcor.de> <1108422240.28902.11.camel@krustophenia.net> <524qge20e2.fsf@topspin.com> <1108424720.32293.8.camel@krustophenia.net> In-Reply-To: <1108424720.32293.8.camel@krustophenia.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Lee Revell Cc: Roland Dreier , Prakash Punnoor , Greg KH , Patrick McFarland , linux-hotplug-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org On Mon, 14 Feb 2005 18:45:20 -0500, Lee Revell wrote: > On Mon, 2005-02-14 at 15:21 -0800, Roland Dreier wrote: > > Lee> I don't see why so much effort goes into improving boot time > > Lee> on the kernel side when the most obvious user space problem > > Lee> is ignored. > > > > How much of a win is it to run init scripts in parallel? I seem to > > recall seeing tests that show that it doesn't make much difference and > > may even slow things down by causing more disk seeks as various things > > start up at the same time and cause reads of different files to get > > interleaved. > > > > This is why Windows XP reserves sapce at the beginning of the disk for > the files read during the boot process and caches copies of them there. > > But, I was referring more to things like GDM not being started until all > the other init scripts are done. Why not start it first, and let the > network initialize while the user is logging in? > > > On the other hand, hotplug is an area that real profiling of real > > systems booting has identified as something that can be improved, and > > Greg's hotplug-ng seems to be a step towards a measurable improvement. Did anyone measure the improvement ? -- Paolo msn: paolo407@hotmail.com hello: ciarrop ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ 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