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Update out-of-date comment in vacuumlazy.c

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Commit 15c121b3ed7eb2f290e19533e41ccca734d23574 seems to have
overlooked the need to trim this part of the comment.

Pavan Deolasee

Discussion: http://postgr.es/m/CABOikdPq_9+cWRNZ0RLKTwuZyj=uL85X=Usifa-CbPee1ZCM5A@mail.gmail.com
This commit is contained in:
Robert Haas 2017-06-22 13:35:39 -04:00
parent 5dfd564b10
commit 2a6db5eba6
1 changed files with 4 additions and 5 deletions
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9
src/backend/commands/vacuumlazy.c
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@ -4,11 +4,10 @@
* Concurrent ("lazy") vacuuming.
*
*
* The major space usage for LAZY VACUUM is storage for the array of dead
* tuple TIDs, with the next biggest need being storage for per-disk-page
* free space info. We want to ensure we can vacuum even the very largest
* relations with finite memory space usage. To do that, we set upper bounds
* on the number of tuples and pages we will keep track of at once.
* The major space usage for LAZY VACUUM is storage for the array of dead tuple
* TIDs. We want to ensure we can vacuum even the very largest relations with
* finite memory space usage. To do that, we set upper bounds on the number of
* tuples we will keep track of at once.
*
* We are willing to use at most maintenance_work_mem (or perhaps
* autovacuum_work_mem) memory space to keep track of dead tuples. We