Re: Fwd: wal_sync_methods for AIX

[Greg Smith <gsmith(at)gregsmith(dot)com>]

On Tue, 19 Feb 2008, JP Fletcher wrote:

> Shared buffers are set to 50000, bgwriter settings are as follows:
>
> bgwriter_delay = 50                     # 10-10000 milliseconds between 
> rounds
> bgwriter_lru_percent = 20.0             # 0-100% of LRU buffers scanned/round
> bgwriter_lru_maxpages = 300             # 0-1000 buffers max written/round
> bgwriter_all_percent = 5                # 0-100% of all buffers scanned/round
> bgwriter_all_maxpages = 600             # 0-1000 buffers max written/round

Not that it impacts what you're asking about, but that's probably an 
excessive setting for bgwriter_lru_percent.  With the reduced delay and 
scanning that much, you're burning a lot of CPU time doing that for little 
benefit.

--
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD