Hi, > Am 29.03.2018 um 10:30 schrieb Gunnar Nick Bluth <gunnar.bluth@xxxxxxxxxxx>: > > Thus, buffer_alloc is the global count of buffers allocated in the > cluster. That it appears in the bgwriter statistics is more or less > coincidental. So it is the number of shared_buffers used? This isn’t possible: postgres=# SELECT buffers_alloc*current_setting('block_size')::numeric/1024/1024/1024, current_setting('shared_buffers') FROM pg_stat_bgwriter; ?column? | current_setting -----------------------+----------------- 1219.7707748413085938 | 64450MB (1 row) About 64 GB shared buffers and 1219 used? ;-) Or other machine: ?column? | current_setting ----------------------+----------------- 126.4642944335937500 | 64450MB (1 row) My Private: ?column? | current_setting --------------------+----------------- 3.3014221191406250 | 6GB (1 Zeile) Ciao Alvar -- Alvar C.H. Freude | http://alvar.a-blast.org https://blog.alvar-freude.de/ https://www.wen-waehlen.de/