[Bug 173541] load average 0.60 at 100% idle

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=173541

--- Comment #17 from Jeremy Chadwick <jdc at koitsu.org> ---
The problem varies per hardware/system (see comment #8), including multiple
types/implementations of VMs.  Ian Lepore (smithi at nimnet.asn.au) already
covered part of this in his "broken loadavg, a fix, then fixed loadavgs"
attachment (it has a lengthy explanation).  The issue almost certainly has
something to do with eventtimers or timecounters.  Ian and I chatted for a bit
off-ticket about some of the possibilities, but neither of us could narrow down
the root cause.

I'm happy to wait for 11.0-RELEASE and try that, but I'm inclined to believe
the issue is still present unless a committer can point to a commit that
actually fixed it; the only commits I follow presently are to stable/9, and a
search of stable/10 for the word "load" turns up no commits that look relevant.
 So, call it sysadmin + FreeBSD-user-since-1997 gut instinct.  :-)

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