Re: 8.2 Autovacuum BUG ? - Mailing list pgsql-performance

From David G. Johnston
Subject Re: 8.2 Autovacuum BUG ?
Date
Msg-id CAKFQuwaSdBWYKmv=buPEyR8rWFnucX5xEbNv3n5fuhtF=nSMHA@mail.gmail.com
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In response to Re: 8.2 Autovacuum BUG ?  (Pavan Teja <pavan.postgresdba@gmail.com>)
List pgsql-performance
On Wed, Jan 24, 2018 at 7:48 AM, Pavan Teja <pavan.postgresdba@gmail.com> wrote:


     Yes, but why doing vacuum freeze of a table is causing a rapid ​archiving?? 
Any idea??


IIUC ​Freezing involves physically altering those pages that are not frozen to make them frozen.  Those changes are logged just like any (most?) other physical changes to pages.  The rapid-ness is because freezing is not that difficult so lots of pages can be changed in a relatively short period of time.

David J.

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