Mailinglist Archive: opensuse-bugs (2150 mails)

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[Bug 871817] kernel 3.14.0 very very sluggys (first time command run, has a huge delay)

https://bugzilla.novell.com/show_bug.cgi?id=871817

https://bugzilla.novell.com/show_bug.cgi?id=871817#c13


--- Comment #13 from Robert Milasan <rmilasan@xxxxxxxx> 2014-04-16 11:44:04 UTC
---
OK, got some good news at the moment. I've dropped some boot options:

'intel_idle.max_cstate=0 processor.max_cstate=0 idle=mwait' and now the system
seems to work OK. No delays, no issues, works as expected.

When idle=mwait option was set, I saw some error in dmesg:

Malformed option 'idle'

Checked the kernel code in arch/x86/kernel/process.c and seems mwait was
dropped, only pool, nomwait and halt is possible.

Got no idea why mwait was dropped, would have been nice to know :)

Can idle option or the other cstate option create so many issues? I don't think
the idle option has anything to do with the issue, as it was malformed, but the
other 2 I'm sure was doing the nasty :)

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