I tested the patches on Unisys ES7000 x86_64 host using 64-bit SLES10 paravirtualized domains. I compared unstable c/s 15730 and 15826 and unfortunately, the amount of time the host is unresponsive when shutting down large vms has not changed. For example, on a 32x 128gb host, the shutdown of a 62gb vm causes 1 minute and 40 seconds of host unresponsiveness both before and after the patches are applied. Also, I noticed that not only does the amount of unresponsive host time increase when the memory size of the domains increase, but it also increases when the size of the host memory increases. Here are my test results:

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