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kvm虚拟机使用mlc #1

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ZhangShuaiyi opened this issue Sep 6, 2018 · 0 comments
Open

kvm虚拟机使用mlc #1

ZhangShuaiyi opened this issue Sep 6, 2018 · 0 comments

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@ZhangShuaiyi
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Hello @huataihuang,参考您的mlc_intel_memory_latency_checker和mlc的使用手册,我打算用mlc测试qemu-kvm配置numa后性能。虚拟机cpu使用host-passthrough模式,并配置vcpupin,在虚拟机中直接运行./mlc_avx512出现异常“MSR fread error!”,在虚拟机中使用./mlc_avx512 -e命令可运行成功,想请教几个问题:

  1. 您有没有测试过配置numa特性的虚拟机。
  2. --c2c_latency使用-e参数话需要额外加哪些参数?我使用了如下两个测试命令,不知道用的对不对(cpu0和cpu1在同一node下,cpu0和cpu24在不同node下)
    ./mlc_avx512 --c2c_latency -c0 -w1 -e -r
    ./mlc_avx512 --c2c_latency -c0 -w24 -e -r
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