Jim Nasby wrote:

> But yes, this is all very hand-wavy without any actual data on what
> percentage of the WAL stream is FPIs. Looks like pageinspect doesn't work
> for WAL... does anyone have a script/tool that breaks out what percentage of
> a WAL file is FPIs?

pg_xlogdump -z

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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