Windows+xpqcow2+top | [updated]

Who actually needs this optimization?

Perhaps the protagonist is a tech enthusiast or maybe a developer who uses virtual machines for different projects. They might be working on an old project that requires Windows XP, which isn't compatible with modern OSes. So they set up a VM using QEMU with a qcow2 image. While running it, they use the top command to keep an eye on the system's performance.

qemu-img create -f qcow2 -o preallocation=metadata winxp.qcow2 20G Tune Cache Mode : For a balance of speed and safety, use cache=none cache=writeback cache=none

Even with XPQCow2 optimization, Windows can behave poorly. Use the top command (host) to correlate symptoms.

If you meant something else by "XPQCow2" (e.g., a custom encryption or compression layer on Qcow2), please clarify, and I’ll adjust the write-up accordingly.

qemu-img convert -f raw windows.raw -O qcow2 -o compression_type=zstd,cluster_size=64K windows_xpqcow2.qcow2

Who actually needs this optimization?

Perhaps the protagonist is a tech enthusiast or maybe a developer who uses virtual machines for different projects. They might be working on an old project that requires Windows XP, which isn't compatible with modern OSes. So they set up a VM using QEMU with a qcow2 image. While running it, they use the top command to keep an eye on the system's performance.

qemu-img create -f qcow2 -o preallocation=metadata winxp.qcow2 20G Tune Cache Mode : For a balance of speed and safety, use cache=none cache=writeback cache=none

Even with XPQCow2 optimization, Windows can behave poorly. Use the top command (host) to correlate symptoms.

If you meant something else by "XPQCow2" (e.g., a custom encryption or compression layer on Qcow2), please clarify, and I’ll adjust the write-up accordingly.

qemu-img convert -f raw windows.raw -O qcow2 -o compression_type=zstd,cluster_size=64K windows_xpqcow2.qcow2