CPU frequency in virsh capabilites differs from lscpu

Mevludin Blazevic mevludin.blazevic at googlemail.com
Thu Nov 17 16:18:23 UTC 2022


Hi all,

typing virsh capabilities on my one of my server results in the following
output:

  <host>
    <uuid>5a692c00-7544-11eb-8000-ac1f6b365280</uuid>
    <cpu>
      <arch>x86_64</arch>
      <model>EPYC-Rome</model>
      <vendor>AMD</vendor>
      <microcode version='137367637'/>
      <counter name='tsc' frequency='2799999000'>

lscpu however shows "CPU max MHz" as 2800.0000 on all servers. On my other
machines, virsh capabilites  shows the max frequency as follows:

<vendor>AMD</vendor>
      <microcode version='137367629'/>
      <counter name='tsc' frequency='2800000000'/>

libvirt and qemu version are btw identical. I assume that the CPU clock
speed may differ or is it a libvirt configuration that I need to adjust?

Regards,
Mevludin
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