9.2-RC3 - suspend/resume causes slow system performance

Andriy Gapon avg at FreeBSD.org
Sun Sep 1 21:36:21 UTC 2013

on 01/09/2013 23:40 Adrian Chadd said the following:
> On 31 August 2013 23:41, Andriy Gapon <avg at freebsd.org <mailto:avg at freebsd.org>>
> wrote:
>     >
>     >     I've tracked this down to a single line, details in
>     >     http://www.freebsd.org/cgi/query-pr.cgi?pr=181632.  Basically, the code is
>     >     now doing a 'sti, hlt' vs. a 'sti' in some code that is only supposed
>     to run
>     >     if idle is disabled.  Given that 'hlt' is the idle instruction, this
>     doesn't
>     >     seem right.
>     >
>     >
>     > Wow, nice!
>     >
>     > Avg - can we get this fixed? Or just revert this!
>     Thank you for trying to be helpful.  But let's not jump to conclusions.
>     BTW, I am following up on the problem in the PR.
> Sure, I'd like to know why it's behaving badly. But since we're so close to
> 9.2-REL, do you think you can get it sorted out and bug-free on all the existing
> platforms that people are using 9.2 on (including server, desktop and laptop)
> without reverting it?

Do you have any evidence that there is anybody else besides Mike who has this
Also, I usually try to "sort out" things after there is a clear understanding of
what the problem is and how it should be fixed.

> Reverting and fixing it later seems like the safest option to me. Is there a
> bigger problem that you tried to fix in that patch that wasn't as obvious?

I do not see any problem with the code*.*  I do not see any explanation of the
root cause of the problem that Mike has.  I do not see why anything has to be
reverted.  Especially because "since we're so close to 9.2-REL".
Just in case, I'll remind that the commit in question is in stable/9 since Dec
23 2012.

Andriy Gapon

More information about the freebsd-stable mailing list