Comment 69 for bug 146924

Well, it's certainly valid and affects current production environment for us. We know the clearest solution is to use newer xen and kernels, and we are using the jiffies workaround, but it's not clear there isn't a better solution.

From what I've read, Jiffies are in fact obsolete and can be problematic, so this problem is certainly very old.

$0.02