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Date:      Wed, 04 Dec 2019 17:30:09 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 242427] pmap_remove() sometimes is very slow causing 10+ minutes long reboots
Message-ID:  <bug-242427-227-c5Q8XJDmSZ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-242427-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-242427-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D242427

--- Comment #5 from Konstantin Belousov <kib@FreeBSD.org> ---
I am sure that you are detecting the edge of second and not the actual slee=
ping
place.  It probably something that happens once in second (some callout) wh=
ich
allows the system to make the progress.

Use precise timing functions like getnanouptime() to find the slow calls.

--=20
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