April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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Checkpoint spikes
As you might guess, if there's a lot of dirty data in a large shared buffer cache, writing it all out once will really cause I/O on your disks to increase. This is particularly true in PostgreSQL Version 8.2 and earlier, which just write the entire dirty portion of the cache out as fast as possible, regardless of its impact on the rest of the system.
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