2009/3/25 Marius Gedminas <mar...@pov.lt>: > I'm wondering why readahead doesn't load all those thousands of small > files needed for desktop startup during boot, before I try to log in. > I'm guessing that it just doesn't know the particular ones that I need - > everyone's GNOME settings are different, applets are different, > wallpapers are different, themes are different.
Right, but also it wouldn't help since simply seeking to one thousand files with an average seek time of 15ms (seek + rotational latency) would mean 15 seconds of pure seeking, not to say anything about actually transferring data (or doing something about the data on the cpu). And I'd like grub -> desktop loaded to be eg. 10s. Readahead is already doing good things, and it should be loading the files it does in an order that reduces the seek time (it can fetch things as they are ordered on the disk), but in the end the amount of files and seeking should be anyway reduced AFAIK. But optimization during 9.04 has concentrated on a lot of other subjects which prevent fast boot anyway, so it's also a matter of the whole picture - if there is anything halting the boot, it doesn't help if one part is completely optimized. -Timo -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
