Colin, thanks for your detailled explanation in comment 4. You didn't mention compression, though. Isn't the image written to disk compressed? If so, it's rather hard to predict, of course, but it might explain why upstream chose that "0.8" factor. Google isn't very helpful in rsolving this question, I'm afraid.
Once we can ascertain whether or not native Linux hibernation uses compression, I can take this discussion to the upstream ML.
Colin, thanks for your detailled explanation in comment 4. You didn't mention compression, though. Isn't the image written to disk compressed? If so, it's rather hard to predict, of course, but it might explain why upstream chose that "0.8" factor. Google isn't very helpful in rsolving this question, I'm afraid.
Once we can ascertain whether or not native Linux hibernation uses compression, I can take this discussion to the upstream ML.