On 01/30/2013 02:07 PM, Bill Nottingham wrote: > Miloslav Trmač (mitr@xxxxxxxx) said: >> Teach grub to preload the kernel and initrd while waiting for the >> timeout. That gives us _even better_ speedup, and doesn't sacrifice >> the generic usability of the initrd. > Well, if the plan is to not timeout, that won't help. But it could be > interesting. Although, everything I've heard about the grub code makes > me entirely concerned when something that amounts to 'introduce threads' > is suggested. Threads are not needed and not desired; the analog of SIGALRM works fine single-threaded. The problem is the possibility of I/O errors when reading ahead. Recovery from an I/O error can take a very long time, and may be not interruptable. For instance, the linux kernel can take _minutes_ to recover from CD/DVD errors, and grub might be no better. If read-ahead (after no wait) on the default choice "always" runs into trouble, then selecting some other choice might be impossible. -- -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
