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[virtio-block] Request support for multi-stage resume of Windows to speed up hibernate/resume #1099
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@zkq Thanks for reporting the issue. Please kindly notice that S3 and S4 is not officially supported by qemu [1], So I am afraid this also won't be virtio-win drivers' priority. |
@vivianQizhu Cheers, |
@vrozenfe |
Hi, A good news that I have written some demo code and the vio-block driver supports MultiPhaseResume now. But the boot time is still very slow:
And another issue of vio-block driver is about hibernate. When I start hibernate, all vCPUs run 100% for 1~2 minutes before windows writes hibernate file into disk. As I can see with NVME virtual device, the hibernate and resume process both are very fast. I guess the issue of vio-block for hibernate and resume are same as the problem looks similar. Do you have any idea how to solve these issues? |
I have a Windows11 guest booted with QEMU and Virtio-blk device, it hibernates very slow (about several minutes) and the resume phase is single-stage(so resume time is longer). After I change the block device to nvme, it hibernates very fast(about several seconds) and the resume phase is two-stages(resume is very fast).
I don't know why virtio-block does not support the multi-stage resume, we'd better support it to have a much better user experience.
FYI:
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