Bartosz Taudul 788d9b77fc Use proper start time to determine if break combining locks. ...

Without this correction the code would combine all lock regions according
to the minimum visibility range rules, and assign the combined area the
highest lock state within all items. This could produce quote long combined
lock regions, where apparently lock contention happened.

Combined lock regions should instead be split to show exactly where the
lock contention is present. Combining is still performed here, but only
within the minimum visibility range.

This new behavior was also present previously, but was mistakenly omitted
during code refactor.

2023-04-15 22:56:44 +02:00

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