"Fast TSC calibration failed" message in RHEL7

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Issue

These messages are found in /var/log/messages when server is starting:

kernel: tsc: Fast TSC calibration failed
kernel: tsc: Unable to calibrate against PIT
kernel: tsc: using PMTIMER reference calibration
kernel: tsc: Detected 2596.969 MHz processor

Environment

Red Hat Enterprise Linux 7
Hyper-V（WindowsServer2012R2）

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