Bug#931500:

From	Anton Ivanov <anton.ivanov@kot-begemot.co.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#931500:
Date	2019-07-08 16:00 +0200
Message-ID	<yhCls-7hM-3@gated-at.bofh.it> (permalink)
References	<ygYem-6V-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Same picture with different NFS minor versions - 4.0, 4.1

Same picture with and without hyperthreading

Same picture with and without different mitigations on/off via kernel 
command line.

100% reproducible within 4-5 repeats of make -j `cat /proc/cpuinfo | 
grep processor | wc -l` ; make clean on an openwrt tree. Reproducing it 
on a linux tree takes a bit longer, but it is also reproducible - 10-12 
times.

So actually the executive summary is - NFS is broken. Completely. That 
is not level 6 bug, that is a much higher, please adjust priority 
accordingly.

-- 

Anton R. Ivanov
https://www.kot-begemot.co.uk/

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Bug#931500:  Anton Ivanov <anton.ivanov@kot-begemot.co.uk> - 2019-07-08 16:00 +0200

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