On Tue, Feb 20, 2007 at 12:45:38PM +0000, TheOldFellow wrote: > On the point of speeding up bootscripts, you'll have far more luck by > parallelising your service start ups, then lightening the scripter.
Yep, that's right; most of the time now is spent waiting for various services to actually start up. If the services are not interdependent, then starting them in parallel will speed up booting a lot more than making the interpreter load faster -- or run faster, for that matter. (However, the biggest delay on my machine is udev, and we can't parallelize that away. The devices that udevd creates are needed for both checkfs and mountfs, and mountfs is probably required for most other scripts. But whatever.) On the topic of parallelizing the bootscripts, what do people think about doing this? DJ has added some easily-parallelizable scripts to the contrib/ directory in the bootscripts repo (basically, by making them LSB compliant, you make them easy to run in parallel). Should we look into making these scripts the default, perhaps for LFS 6.4 or 7? (And should we actually run them in parallel or not?) On the one hand, it could be argued that this is not at all needed for a base system, and depending on your definition of "base", that may be right. But OTOH, most users expect OSes to come up in way less than a minute these days. Plus, having parallel bootscripts is certainly an education opportunity, if the user looks into how the scripts work together, or if the general idea is explained when the scripts get installed. (And LSB compliance helps when another package, e.g. one that isn't in LFS or BLFS, needs to install a bootscript -- but I'm not sure how many of those there even are. Of course, we would get that by using the LSB scripts without running them in parallel, too.) If I remember, I'll try doing some testing on my machine sometime soon, to see what, if anything, is required to get these contrib scripts to work, and then what else, if anything, is required to get them to work in parallel. (Well, "what else" apart from actually running them in parallel from rc, that is.)
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