WAL File Volume - Mailing list pgsql-admin

From David Morton
Subject WAL File Volume
Date
Msg-id CAAo2Tf9cXgDsi4H1dFL2bJtaiQ98Cv-_wE4yTNsXg8+=3JsArQ@mail.gmail.com
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List pgsql-admin
We have a database of around 700Gb ... its fairly busy with a lot of small transactions.

We generate some times near 100Gb of WAL files per day, this seems like a lot !! We are looking at a secondary data center for DR so the connection would need a large amount of bandwidth based on this volume. 

Is what we are seeing normal ?
Are there any tunable parameters which will reduce the WAL volume ?

At present we get several WAL's spat out every minutes ... sometimes loads more when automatic maintenance takes place etc.

Dave

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