[Bug 1826401] Re: qemu-system-aarch64 has a high cpu usage on windows

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1826401

Title:
  qemu-system-aarch64 has a high cpu usage on windows

Status in QEMU:
  Expired

Bug description:
  Running qemu-system-aarch64 leads to a high CPU consumption on windows
  10.

  Tested with qemu: 4.0.0-rc4 & 3.1.0 & 2.11.0

  Command: qemu_start_command = [
          qemu-system-aarch64,
          "-pidfile",
          target_path + "/qemu" + str(instance) + ".pid",
          "-machine",
          "virt",
          "-cpu",
          "cortex-a57",
          "-nographic",
          "-smp",
          "2",
          "-m",
          "2048",
          "-kernel",
          kernel_path,
          "--append",
          "console=ttyAMA0 root=/dev/vda2 rw ipx=" + qemu_instance_ip + "/64 
net.ifnames=0 biosdevname=0",
          "-drive",
          "file=" + qemu_instance_img_path + ",if=none,id=blk",
          "-device",
          "virtio-blk-device,drive=blk",
          "-netdev",
          "socket,id=mynet0,udp=127.0.0.1:2000,localaddr=127.0.0.1:" + 
qemu_instance_port,
          "-device",
          "virtio-net-device,netdev=mynet0",
          "-serial",
          "file:" + target_path + "/qemu" + str(instance) + ".log"
      ]

  *The cpu consumption is ~70%.
  *No acceleration used.
  *This CPU consumption is obtained only by running the above command. No 
workload on the guest OS.

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