Saturday, July 22, 2006

 

Now preloading worked (SoC 2006)

One again I've tried the preload program from Behdad Esfahbod (a result from SoC2005) but this time positive results. The cause of the difference might have been an incorrect deinstallation of parallel booting (insserv/startpar). The boot time showed a 2 second time improvement. The preload.conf parameters mapprefix and exeprefix were set to empty such that all files would be accepted. The results were compared with mapprefix being set to the directories used by some of the init scripts (strace -f initscript), adjusting the quantum time of preload (cycle parameter) and changing the position of the initscript to start just after hwclockfirst.sh. The results were the same: a 2 second time improvent. See the bootcharts here.

Comments:
Good work. Good thing that you didn't listen to me about preload too much... I had my doubts about whether preload would work for this. I know too little about the program, even though I'm supposed to be the maintainer.

Feel free to send a patch to change preload's default settings once you're happy with your results.
 
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