I don't know if this will help, but I had a similar problem. When creating a snapshot image of an XP machine, all works just fine when loading it. As time passes on the host the loadvm start to become very slow.
To reproduce: 1. Create a snapshot image (savevm) 2. leave QEMU 3. move the *HOST* clock one month in the future 4. Start QEMU with -loadvm It turns out that the "-rtc clock=vm" made this disappear. When using the default caused the problem. John -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram Status in QEMU: Confirmed Status in “qemu” package in Ubuntu: Invalid Bug description: I have Windows XP SP3 inside qemu VM. All works fine in 12.10. But after upgraiding to 13.04 i have to restart the VM each time i resuming my host machine, because qemu process starts to take CPU cycles and OS inside VM is very slow and sluggish. However it's still controllable and could be shutdown by itself. According to the taskmgr any active process takes 99% CPU. It's not stucked on some single process. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions
