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saysai's avatar
saysai
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3 years ago

PCIe PTM time adjustment

Hi, We are using "Intel(R) Xeon(R) E-2334 CPU @ 3.40GHz" processor to test PCIe PTM with a third party PCIe NIC card. We see that PTM is supported on the PCI bridge (below is the lspci output) 00:0...
JulianStj's avatar
JulianStj
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3 years ago

Hi Saysai,

I've done quite a bit work on PTM with different hardware. You typically use phc2sys to copy to or from CLOCK_REALTIME, which is the kernel's projection of the relationship between the ART in the CPU (read via TSC) and the other clock used in phc2sys. Let me know if you'd like more details, I can send you my contact info.

Thanks!

-Julian St. James