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  1. RHEL
  2. RHEL-33991

[rhel10] Support zero-page-detection for multifd from qemu-kvm-9.0.0

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      From qemu-kvm-9.0.0, new parameter called "zero-page-detection" is supported, allowing the user to choose the policy for detecting zero pages.

      It has three options: 
      1) none: not to do zero page detection, this option before RHEL-9.4 can not be selected, It's a better choice under some scenarios if the guest page is not zero-page
      2) legacy; do the detection only in the main thread.
      3) multifd: the recommended use, zero page detection will be put into multiple threads.
      Zero page detection offloading for multifd, so that idle guest migration should get a major boost when multifd is enabled

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          88 kB
          Xiaohui Li
        2. image-2024-07-31-14-33-43-559.png
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          Xiaohui Li
        3. image-2024-08-05-17-16-17-472.png
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          Xiaohui Li

              zhexu@redhat.com Peter Xu
              rhn-support-xiaohli Xiaohui Li
              virt-maint virt-maint
              Xiaohui Li Xiaohui Li
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                Updated:
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