TSC Frequency not probed correctly

[danfruehauf]

On a server I'm running this utility on, I encounter unreasonable clock frequencies.

For example:

TSC freq:     1034704.0 Hz
TSC overhead: 27 cycles

The clock frequency is actually 5GHz. This yields unlikely PCIe latency results, like:

       | Results (1000 samples)
------------------------------------------------------
Mean   |  11218.96 cycles | 10842679.65 ns
Stdd   |    390.80 cycles | 377693.83 ns

[andre-richter]

Disclaimer: I haven't used this tool in a long time.

The TSC frequency in this case is probed by the Linux kernel directly. My driver just uses the symbol tsc_khz that Linux is exporting.

Unless something goes wrong when the ruby script queries it, I think you need to check the kernel 🤔

[andre-richter]

Closing. #3 most likely fixed this.