RFR: 8372348: Adjust some UL / JFR string deduplication output messages

[Andreas Steiner]

On Wed, 10 Dec 2025 14:23:24 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Maybe , but the variables are named `_new / _new_bytes` and the JFR fields also have 'new' in the name. So it maybe makes sense to keep 'new' in the UL and related output.
>
> The avg  (now named total avg) is for some people also a bit mysterious .
> It is , taken from total_stat , the` deduped bytes / new bytes` .  Why is it called avg? avg of what ?

Adding total will be helpful already, but why are not the numbers printed on which the avg is based? Because otherwise you don't get an impression what the percentage mean.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28455#discussion_r2607111295