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如何在 VMware 中增加 Ubuntu VM 的每核线程数？

tag-icon • tag-icon vmware-esxi virtual-machines vmware-vsphere central-processing-unit ubuntu-22.04
如何在 VMware 中增加 Ubuntu VM 的每核线程数？

我最近购买了一台 VMware 专用服务器，并在其上使用 Ubuntu 22 服务器操作系统创建了我的第一个 VPS。在 Ubuntu 中使用 lscpu ，我看到以下内容：

steam@steam:/root$ lscpu
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         45 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  8
  On-line CPU(s) list:   0-7
Vendor ID:               GenuineIntel
  Model name:            Intel(R) Xeon(R) CPU E5-2667 v4 @ 3.20GHz
    CPU family:          6
    Model:               79
    Thread(s) per core:  1
    Core(s) per socket:  4
    Socket(s):           2
    Stepping:            1
    BogoMIPS:            6392.59
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc cpuid tsc_kno
                         wn_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti ssbd ibrs ibpb stibp fsgsbase tsc_a
                         djust bmi1 avx2 smep bmi2 invpcid rdseed adx smap xsaveopt arat md_clear flush_l1d arch_capabilities
Virtualization features:
  Hypervisor vendor:     VMware
  Virtualization type:   full
Caches (sum of all):
  L1d:                   256 KiB (8 instances)
  L1i:                   256 KiB (8 instances)
  L2:                    2 MiB (8 instances)
  L3:                    50 MiB (2 instances)
NUMA:
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-7
Vulnerabilities:
  Gather data sampling:  Not affected
  Itlb multihit:         KVM: Mitigation: VMX unsupported
  L1tf:                  Mitigation; PTE Inversion
  Mds:                   Mitigation; Clear CPU buffers; SMT Host state unknown
  Meltdown:              Mitigation; PTI
  Mmio stale data:       Mitigation; Clear CPU buffers; SMT Host state unknown
  Retbleed:              Mitigation; IBRS
  Spec rstack overflow:  Not affected
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl and seccomp
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:            Mitigation; IBRS, IBPB conditional, STIBP disabled, RSB filling, PBRSB-eIBRS Not affected
  Srbds:                 Not affected
  Tsx async abort:       Not affected

如何增加每核线程数？

答案1

你不需要。ESXi 将 vCPU 数量转发出去，并将它们虚拟化，而主机则管理核心和超线程本身。主机将显示所有线程，而不仅仅是物理核心。没有办法将超线程专门传递给虚拟机，只是更多的 vCPU

如果您需要更多线程，您需要在 VM 中的编辑下添加 vCPU（您可能需要关闭 VM 才能执行此操作）。

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