Speeding up the boot process
anothermindbomb at gmail.com
Sat Dec 13 14:28:30 UTC 2008
Brian McKee wrote:
> On Sat, Dec 13, 2008 at 5:14 AM, Steve Flynn <anothermindbomb at gmail.com> wrote:
>> the same sequence number, I made the change to
> Is your laptop a dual core machine? I saw that note somewhere, but
> was under the impression that it takes a multicore/processor machine
> to get any advantage out of it, thus my Atom processor wouldn't make
> it worthwhile for me....
The laptop is indeed dual-core.
However, I would expect that it'll work in the same way that compiling
with "make -j 5" (for example) does, even on a single core machine....
you fire off multiple scripts / compiles because you can make use of the
dead time when one thread it waiting for a disk read or write to
complete by running other code, probing for hardware, waiting for the
router to hand out a DHCP address and so forth.
Back in the mid 90's when it took me 9 or 10 hours to cross compile the
kernel for a motorola 68030, I used to kick off multiple threads despite
having a single core processor and slashed an hour or two off the
Of course, depending on the spec of your machine, how many scripts run
concurrently, how fast your drives are and a number of other things, the
amount of time gained (or lost) is a matter for investigation. Suck it
and see - if the boot times don't improve or you see any other issues,
set the level of concurrency back to "none" and you're back to where you
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