Roland Mainz wrote: > Moinak Ghosh wrote: > >> Moinak Ghosh wrote: >> >>> J?rgen Keil wrote: >>> >>>> Bart wrote: >>>> > [snip] > >>> My hsfs enhancements for Live Media fix this shortcoming of hsfs. >>> It issues whole page reads where there is no interleaving and does >>> re-ordering. So it can coalesce multiple pages into a single larger >>> read. >>> >>> I sent out the changes for review on caiman-discuss sometime back. >>> http://bugs.opensolaris.org/view_bug.do?bug_id=6588256 >>> >>> http://www.genunix.org/distributions/belenix_site//binfiles/hsfswebrev/index.htm >>> >>> >> Forgot to mention that the overall install time also depends on how >> fast the rest of the system is: I/O bus, disk, processor etc. On laptops >> with slower disk, cpu etc. the pkgadds and whole bunches of postinstall, >> preinstall, class-action and other scripts, bunzip2 take time so the >> CDROM spins down. The install in that case will be unable to sustain >> an 8MB/sec throughput regardless of filesystem enhancements. >> > > Is there no way to prevent the CDROM from spinning down ? >
Have a background daemon that reads the first sector of the raw device every 15 secs. 15 secs is typical spin down times for internal optical drives. But it will be hard on the drive if the poor guy is kept constantly spinning for the greater part of an hour. Rather the install should be more streamlined such that it finishes within 30mins. A combination of Slim Install + new packaging without scripts + not using bzip2 + the hsfs enhancements should deliver the goods. Regards, Moinak. > ---- > > Bye, > Roland > >
