bash-4.2$ dmesg | grep tsc
[    0.000000] tsc: Fast TSC calibration failed
[    0.000000] tsc: PIT calibration matches HPET. 1 loops
[    0.000000] tsc: Detected 1799.991 MHz processor
[    0.085000] tsc: Marking TSC unstable due to check_tsc_sync_source failed