April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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checkpoint_timeout
The default for this setting of 5 minutes is fine for most installations. If your system isn't able to keep up with writes and you've already increased max_wal_size to where the timeout is the main thing driving when checkpoints happen, it's reasonable to consider an increase to this value. Aiming for 10 minutes or more between checkpoints isn't dangerous; again it just increases how long database recovery after a crash will take. As this is one component to database server downtime after a crash, that's something you need a healthy respect for.
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