On Mon 15-03-21 13:42:50, Linus Torvalds wrote:
If somebody can actually figure out what happened there, that would
good, but for now it goes into my "archived as a random outlier"
This is not something new. We have seen reports like that in the past
already. In many cases there was no apparent reason except for potential
code alignment: e.g. http://lkml.kernel.org/r/20200409135029.GA2072@xsang-OptiPlex-9020
There were some other memcg related which didn't really show any
increase in cache misses or similar. I cannot find those in my notes
right now. There were others like
with analysis http://lkml.kernel.org/r/20201125062445.GA51005@shbuild999.sh.intel.com
which actually pointed to something legit actually.
For this particular report I do not see any real relation to the patch