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Date:      Fri, 22 Jan 2016 22:49:06 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 206492] System hangs on huge disk activity
Message-ID:  <bug-206492-8-XgXPKSE2JH@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-206492-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-206492-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206492

Mark Millard <markmi@dsl-only.net> changed:

           What    |Removed                     |Added
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                 CC|                            |markmi@dsl-only.net

--- Comment #2 from Mark Millard <markmi@dsl-only.net> ---
If you use a swapfile on a file-system/partition that gets a mix of other IO
then see

Bug 206048 - 11.0-CURRENT -r293227 (and others) arm (rpi2/BeagleBone Black)
amd64 etc: swapfile usage hangs; swap partition works

for a problem that may apply to 10.x as well when using things like:

file=3D/var/spool/swap/swapfile
file=3D/swap0

--unless those files are on their own file systems/partitions not used for
other (used) files.

It may be worth testing if the involved 10.x context(s) hang before settlin=
g on
this sort of placement of the file. One of the comments suggested a command
like:

stress -d 2 -m 3 --vm-keep

was sufficient to show the problem on at least 11.0-CURRENT amd64 contexts.=
 I
guess that command is from the port sysutils/stress .

It would actually be good to have 10.x comments in Bug 206048 reporting how
such testing went if someone tries it.

--=20
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