Gee! These Aren't Roasted!
I was doing a general check in dmesg for errors and i saw something that intrigued me
"[25010.556730] Disabling non-boot CPUs ...
[25010.660016] CPU 1 is now offline
[25010.764009] CPU 2 is now offline"
This assumes that at boot-time (i have a tripple core amd) the 2nd and 3rd core is down? And if so, enabeling them would make boot process faster (i am asking mainly not for my desktop but for laptop which boots kinda slow).
Thanx.
Last edited by editheraven; November 18th, 2012 at 09:10 PM.
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25010sec / 60 min/sec= 416 minOriginally Posted by editheraven
I agree 416 minutes is too long to be a proper boot time
next time use
those messages are mundane core sleep messagesCode:dmesg | head -n 1000
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I remember there used to be a concurrent command to be passed on to GRUB, wonder if thats been depreciated, that command would use all the CPU's for boot process.
Thankful for This Title
I'm guessing you put your system in suspend/sleep/hibernate when those messages were logged.
Fresh Brewed Ubuntu
upstart for ubuntu does uses all cores for boot
Booting is generally io bound, so it wont make much difference if all core are active.
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Ubuntu addict and loving it
No, as the other poster told you these time stamps are hours after boot time, they are probably normal power saving messages as the system turns off unneeded CPUs.
"Boot time" is the first few tens of seconds of the dmesg file.
Regards, David.
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