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rr for Debian
-------------
rr currently only supports Intel CPUs with Nehalem or later
microarchitectures, and some AMD Zen CPUs.
rr conflicts with certain kernel features; running rr will tell you
what needs changed (if anything). It may suggest checking perf; this
means you need to check /proc/sys/kernel/perf_event_paranoid and set
it to -1 ("not paranoid at all") if necessary.
On Zen CPUs, you may need to disable hardware SpecLockMap
optimisation; the zen_workaround.py script, provided in
/usr/share/doc/rr/examples, will do this for you.
-- Stephen Kitt <skitt@debian.org>, Sun, 1 Nov 2020 18:05:05 +0100
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