HomeexperimentsFinding performance counters for memory traffic on Haswell


Finding performance counters for memory traffic on Haswell — 1 Comment

  1. After rebooting my system, the /sys/devices/uncore_imc directory was no longer available. I was initially confused what might be causing this. Investigating further, I figured out that the system had booted into a Xen hypervisor virtual machine. Interestingly enough some of the event files such as /sys/devices/cpu were available, while others were not.

    Later activity to still explore virtualization and performance counters, but for now went back to a bare metal OS.

    Also a useful reminder that when rebooting from remotely where I won’t see the console on bringup to make sure the system is in the expected configuration…

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