rr for Debian ------------- rr currently only supports Intel CPUs of the Merom, Nehalem, Sandy Bridge, Ivy Bridge, Haswell, Broadwell or Skylake variety. No AMD CPU is supported, and no Intel CPU before Merom. 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. -- Stephen Kitt , Wed, 3 Feb 2016 13:54:20 +0100