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Re: Avoid full page images in streaming replication? - Mailing list pgsql-hackers

From Jim Nasby
Subject Re: Avoid full page images in streaming replication?
Date
Msg-id 56296F62.6030603@BlueTreble.com
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In response to Re: Avoid full page images in streaming replication?  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Responses Re: Avoid full page images in streaming replication?  (Alvaro Herrera <alvherre@2ndquadrant.com>)
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On 10/22/15 5:53 PM, Alvaro Herrera wrote:
> 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

Hrm, any option for 9.4? I was hoping to get numbers from some real 
workloads...
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com

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