Postgresql buffers_alloc

Question

I am trying to create a performance monitors for postgresql. Inpostgresql have seen buffers_alloc (https://www.postgresql.org/docs/9.2/static/monitoring-stats.html) and the explanation is "Number of buffers allocated". I tired to find the exact meaning of number of Buffers. Could some one please explain to me?

Laurenz Albe · Accepted Answer · 2017-02-24 13:41:18Z

1

All data in PostgreSQL is organized in 8KB blocks, on storage as well as in memory.

A buffer is an 8KB block in database shared memory.

answered Feb 24, 2017 at 13:41

Laurenz Albe

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