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help / color / mirror / Atom feedFrom: Scott Ray <[email protected]>
To: Laurenz Albe <[email protected]>
Cc: Shinya Kato <[email protected]>
Cc: Japin Li <[email protected]>
Cc: wenhui qiu <[email protected]>
Cc: Sami Imseih <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: Report oldest xmin source when autovacuum cannot remove tuples
Date: Sat, 30 May 2026 02:31:27 +0000
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<[email protected]>
> I guess the overhead of one more scan of the process array for every autovacuum
> run if "log_autovacuum_min_duration" is non-zero (which is the default)
> is acceptable.
Could vacuum compute the blocker during ComputeXidHorizons and consume it at log time?
Avoids the extra scan, and binds the blocker to the horizon vacuum used for pruning.
Scott Ray
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Subject: Re: Report oldest xmin source when autovacuum cannot remove tuples
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