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Subject: [Bug 206128] vmstat -z is truncated when stdout is not terminal
Date: Thu, 26 May 2016 09:47:52 +0000
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X-Bugzilla-Version: 11.0-CURRENT
X-Bugzilla-Keywords: regression
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206128

--- Comment #7 from Fabian Keil <fk@fabiankeil.de> ---
After reverting the patch again, I still see the problem with
a system based on 11-CURRENT r300376.

You could try running:

while vmstat -z | wc -c; do sleep 60; done

and wait until it prints 8192 which indicates a truncation.

Usually the output stays the same for a while, so if you
see 8192 once, there's a fair chance that you'll be able
to reproduce the problem with a debugger attached.

Yesterday I saw the truncation issue for more than 80 minutes
until it went away again.

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