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    MaratKzn

    @MaratKzn

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    Latest posts made by MaratKzn

    • RE: Please help me with the answer

      Yes, VM has the latest version Guest Tools installed (7.30.0-11)

      posted in Compute
      M
      MaratKzn
    • RE: Please help me with the answer

      @planedrop

      You have the tools installed in the VM correct?
      If you mean xen-tools, the VM has the latest version installed (7.30.0-11)

      I'm also curious, is there a reason you need to see correct CPU frequency in the VM guest? CPU usage % should still be accurate in terms of whatever is assigned to the VM. But not sure why frequency would be needed.

      I have a suspicion that the VM is running at base CPU frequency and not using "Turbo mode"

      watch "grep 'cpu MHz' /proc/cpuinfo"

      Every 2.0s: grep 'cpu MHz' /proc/cpuinfo virtual.ml.srv.mq: Fri Feb 2 16:14:32 2024

      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127

      Even though "Turbo mode" works on the host itself.

      [16:57 edge05 ~]# xenpm start 1|grep "Avg freq"
      Avg freq 2540000 KHz
      Avg freq 3200000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3280000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3240000 KHz
      Avg freq 3140000 KHz
      Avg freq 3340000 KHz
      Avg freq 3300000 KHz
      Avg freq 3240000 KHz
      Avg freq 3340000 KHz

      As a consequence, I am losing CPU performance on the VM

      posted in Compute
      M
      MaratKzn
    • RE: Please help me with the answer

      @DustinB

      The frequency on the XEN host and in the VM on that host are different

      For example

      CPU: AMD EPYC 7702P
      Base Clock 2.0GHz
      Max. Boost Clock Up to 3.35GHz

      On the XEN host:

      [16:57 edge05 ~]# xenpm start 1|grep "Avg freq"
      Avg freq 2540000 KHz
      Avg freq 3200000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3280000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3240000 KHz
      Avg freq 3140000 KHz
      Avg freq 3340000 KHz
      Avg freq 3300000 KHz
      Avg freq 3240000 KHz
      Avg freq 3340000 KHz
      Avg freq 3280000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3260000 KHz
      Avg freq 3340000 KHz
      Avg freq 3280000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3280000 KHz
      Avg freq 3280000 KHz
      Avg freq 3240000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3300000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3160000 KHz
      Avg freq 3080000 KHz
      Avg freq 3340000 KHz
      Avg freq 3100000 KHz
      Avg freq 3340000 KHz
      Avg freq 3240000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3320000 KHz
      Avg freq 3040000 KHz
      Avg freq 3100000 KHz
      Avg freq 3320000 KHz
      Avg freq 3220000 KHz
      Avg freq 3220000 KHz
      Avg freq 3060000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3300000 KHz
      Avg freq 3320000 KHz
      Avg freq 3180000 KHz
      Avg freq 3320000 KHz
      Avg freq 3240000 KHz
      Avg freq 3240000 KHz
      Avg freq 3160000 KHz
      Avg freq 3140000 KHz
      Avg freq 3160000 KHz
      Avg freq 3260000 KHz
      Avg freq 3260000 KHz
      Avg freq 3200000 KHz
      Avg freq 3180000 KHz
      Avg freq 3340000 KHz
      Avg freq 3340000 KHz
      Avg freq 3080000 KHz
      Avg freq 3000000 KHz
      Avg freq 3000000 KHz
      Avg freq 3340000 KHz
      Avg freq 3100000 KHz
      Avg freq 3200000 KHz
      Avg freq 3220000 KHz
      Avg freq 3160000 KHz
      Avg freq 3120000 KHz
      Avg freq 3220000 KHz
      Avg freq 3200000 KHz
      Avg freq 3200000 KHz
      Avg freq 3200000 KHz
      Avg freq 3200000 KHz
      Avg freq 3300000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3160000 KHz
      Avg freq 3340000 KHz
      Avg freq 3240000 KHz
      Avg freq 3340000 KHz
      Avg freq 3180000 KHz
      Avg freq 3340000 KHz
      Avg freq 3140000 KHz
      Avg freq 3080000 KHz
      Avg freq 3260000 KHz
      Avg freq 3240000 KHz
      Avg freq 3220000 KHz
      Avg freq 3180000 KHz
      Avg freq 3240000 KHz
      Avg freq 3240000 KHz
      Avg freq 3260000 KHz
      Avg freq 3280000 KHz
      Avg freq 3060000 KHz
      Avg freq 3020000 KHz
      Avg freq 3200000 KHz
      Avg freq 3200000 KHz
      Avg freq 3180000 KHz
      Avg freq 3180000 KHz
      Avg freq 3200000 KHz
      Avg freq 3200000 KHz
      Avg freq 3240000 KHz
      Avg freq 3180000 KHz
      Avg freq 3320000 KHz
      Avg freq 3320000 KHz
      Avg freq 3240000 KHz
      Avg freq 3200000 KHz
      Avg freq 3280000 KHz
      Avg freq 3280000 KHz
      Avg freq 3020000 KHz
      Avg freq 3020000 KHz
      Avg freq 3180000 KHz
      Avg freq 3200000 KHz
      Avg freq 3040000 KHz
      Avg freq 3320000 KHz
      Avg freq 3320000 KHz
      Avg freq 3340000 KHz
      Avg freq 3360000 KHz
      Avg freq 3340000 KHz

      On the VM on this host:
      watch "grep 'cpu MHz' /proc/cpuinfo"

      Every 2.0s: grep 'cpu MHz' /proc/cpuinfo virtual.ml.srv.mq: Fri Feb 2 16:14:32 2024

      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127
      cpu MHz : 2000.127

      Thank you!

      posted in Compute
      M
      MaratKzn
    • RE: Please help me with the answer

      @DustinB said in Please help me with the answer:

      I'm not sure that you can do this through the CLI (you probably can), but you can see how any given VM is behaving through XO.

      In XOA, I can only see CPU utilization, not CPU core frequency

      posted in Compute
      M
      MaratKzn
    • RE: Please help me with the answer

      I have installed XCP-ng 8.2.1 on some testing HW (Lenovo SR650). I created Ubuntu 20.04 VM on it and am running some performance tests.

      I am able to monitor CPU frequency in Hypervisor via xenpm command:

      [13:50 test-xcp-ng ~]# xenpm get-cpufreq-average | grep 'frequency: '
      average cpu frequency: 1134540
      average cpu frequency: 2227060
      average cpu frequency: 1449690
      average cpu frequency: 2248070
      average cpu frequency: 1428680
      average cpu frequency: 1869890
      average cpu frequency: 2143020
      average cpu frequency: 1764840
      average cpu frequency: 2290090
      average cpu frequency: 1554740
      average cpu frequency: 2584230
      average cpu frequency: 1050500
      average cpu frequency: 2206050
      average cpu frequency: 1071510
      average cpu frequency: 1890900
      average cpu frequency: 1050500
      average cpu frequency: 1134540
      average cpu frequency: 1113530
      average cpu frequency: 1113530
      average cpu frequency: 1092520
      average cpu frequency: 1113530
      average cpu frequency: 1113530
      average cpu frequency: 1134540
      average cpu frequency: 1092520
      average cpu frequency: 1113530
      average cpu frequency: 1113530
      average cpu frequency: 1155550
      average cpu frequency: 1134540
      average cpu frequency: 1155550
      average cpu frequency: 1155550
      average cpu frequency: 1176560
      average cpu frequency: 1176560

      But /proc/cpuinfo in Ubuntu VM shows only fixed CPU frequency:

      root@test-vm:~# cat /proc/cpuinfo | grep -i mhz
      cpu MHz : 2095.211
      cpu MHz : 2095.211
      cpu MHz : 2095.211
      cpu MHz : 2095.211

      Adding also lscpu output (again same MHz as above):

      root@test-vm:~# lscpu
      Architecture: x86_64
      CPU op-mode(s): 32-bit, 64-bit
      Byte Order: Little Endian
      Address sizes: 46 bits physical, 48 bits virtual
      CPU(s): 4
      On-line CPU(s) list: 0-3
      Thread(s) per core: 1
      Core(s) per socket: 1
      Socket(s): 4
      NUMA node(s): 1
      Vendor ID: GenuineIntel
      CPU family: 6
      Model: 85
      Model name: Intel(R) Xeon(R) Silver 4216 CPU @ 2.10GHz
      Stepping: 7
      CPU MHz: 2095.211
      BogoMIPS: 4190.29
      Hypervisor vendor: Xen
      Virtualization type: full
      L1d cache: 128 KiB
      L1i cache: 128 KiB
      L2 cache: 4 MiB
      L3 cache: 88 MiB
      NUMA node0 CPU(s): 0-3
      Vulnerability Itlb multihit: KVM: Vulnerable
      Vulnerability L1tf: Mitigation; PTE Inversion
      Vulnerability Mds: Mitigation; Clear CPU buffers; SMT Host state unknown
      Vulnerability Meltdown: Mitigation; PTI
      Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
      Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
      Vulnerability Spectre v2: Mitigation; Retpolines, IBPB conditional, IBRS_FW, STIBP disabled, RSB filling
      Vulnerability Srbds: Not affected
      Vulnerability Tsx async abort: Not affected
      Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush acpi mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl cpuid pni pclmulqdq sss
      e3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti intel_ppin ssbd ibrs ibp
      b stibp fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt clwb xsaveopt xsavec xgetbv1 xsaves pku ospke md_clear flush_l1d

      In some cloud providers (e.g. AWS EC2), CPU frequency that is visible in /proc/cpuinfo looks like current CPU frequency (looks "live" - changing on every run):

      root@aws-instance:~# cat /proc/cpuinfo | grep -i mhz
      cpu MHz : 3499.906
      cpu MHz : 3500.627
      cpu MHz : 3499.477
      cpu MHz : 3501.732
      cpu MHz : 3499.307
      cpu MHz : 3499.868
      cpu MHz : 3500.009
      cpu MHz : 3499.829
      root@aws-instance:~# cat /proc/cpuinfo | grep -i mhz
      cpu MHz : 3500.867
      cpu MHz : 3500.318
      cpu MHz : 3500.907
      cpu MHz : 3499.985
      cpu MHz : 3500.236
      cpu MHz : 3500.225
      cpu MHz : 3499.921
      cpu MHz : 3501.104
      root@aws-instance:~# cat /proc/cpuinfo | grep -i mhz
      cpu MHz : 3500.423
      cpu MHz : 3500.150
      cpu MHz : 3500.372
      cpu MHz : 3500.026
      cpu MHz : 3501.071
      cpu MHz : 3500.911
      cpu MHz : 3500.316
      cpu MHz : 3500.048

      I would like to monitor current CPU frequency in my Ubuntu VM that is running in XCP-ng hypervisor, similar to what I can see in AWS EC2 instance. Is that possible?

      posted in Compute
      M
      MaratKzn
    • Please help me with the answer

      Re: Monitoring actual current CPU frequency in guest OS

      posted in Compute
      M
      MaratKzn