No, it's not. Don't use haveged. Virtual machines should simply get their initial entropy from the already-seeded urandom pool of their hypervisor host. Processes don't "hang waiting for more entropy"; they hang because /dev/random inexplicably goes on strike. The answer to that problem is "never use /dev/random".
true but even if we don't want to use /dev/random, there's still software using it all over the place that we don't necessarily want to patch.
I end up installing haveged just because I don't want the system mysteriously locking up because some random daemon wants to create a 4096 bit key on first startup.
