-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Isnt this the same as puting "profile" on the grub when you get a new kernel?!
On Sunday 12 August 2007 19:28:40 Krzysztof Lichota wrote: > Hello everyone. > I am working this summer on "Automatic boot and application start file > prefetching" project as part of Google Summer of Code for Ubuntu. > > I am glad to announce that first version of kernel with automatic boot > tracing and prefetching is available for widespread testing :) > > How it works? > - During boot file accesses are recorded. > - During subsequent boots this trace is used to prefetch files before > they are used in order to speed up boot. > > Everything is done automatically, without user intervention, and tracing > is possible to do at the same time as prefetching - as opposed to > currently used "readahead" package, which requires manual run of tracing > (and prefetching is not done during tracing). > > Results from my latest tests, standard boot, average of 9 runs: > Prefetch kernel + prefetch : 54.91s > Prefetch kernel + readahead : 58.76s > Ubuntu kernel + readahead : 61.21s > > Results of tests with OpenOffice run at boot, simulating disk-intensive > applications run at boot, average of 9 runs: > Prefetch kernel + prefetch : 65.53s > Prefetch kernel + readahead : 74.43s > Ubuntu kernel + readahead : 81.01s > > Debs with kernel and supporting userspace utilities are available on > project page. Please see this webpage for instructions how to install them: > http://code.google.com/p/prefetch/wiki/TestingBootPrefetching > > If you would like to do some automatic tests to accurately measure boot > time and effect of prefetching, please see this page: > http://code.google.com/p/prefetch/wiki/BootTimeMeasurementInstruction > > Please report successes and possible problems to: > [EMAIL PROTECTED] (no registration necessary). > > Krzysztof Lichota - -- BUGabundo :o) (``-_-´´) Linux user #443786 GPG key 1024D/A1784EBB The body of this email is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://BUGabundo.net -- http://Ubuntu.BUGabundo.net -- http://BrinKadeiraS.BUGabundo.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGwDP6Y5ijS6F4TrsRAuAMAKCeKeFxamBIR/4kZLUsRu3iO90ahwCfVuLH pQJ0hXm9ejcSal5W+wi7Aqw= =DbYV -----END PGP SIGNATURE----- -- 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
