Keaton Adams wrote: > Even with full_page_writes set to false and checkpoints taking place > every 60 seconds or so, the amount of WAL log data generated per minute > seems to be significant.
Stop right there. Having checkpoints every 60 seconds is insane. Did you look into increasing checkpoint_segments a lot? > So my question is this: If I kick off a transaction that loads records > with a size of 100 bytes, does the insert for that record take 100 bytes > in the WAL file, or is the data archived in the WAL log in page size > (8k) portions? Vicinity of 100 bytes, except right after checkpoints as you noted. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
