Re: Estimating WAL usage during pg_basebackup

[Soni M <diptatapa@xxxxxxxxx>]

This is hard to tell, but You can get some estimation.

1. You can have WAL rate estimation from pg_xlog/ dir, i.e. How many WAL generated per minutes

2. How long this pg_basebackup will last. Lets say for 3 hours.

Then You can multiple values in #1 and #2 to get rough estimation.

Hope this would help.

On Fri, Oct 31, 2014 at 1:52 AM, Mike Blackwell <mike.blackwell@xxxxxxx> wrote:

I need to get an idea of how much WAL space will be required during a long (many hours) pg_basebackup over a relatively slow network connection.  This is for a server that's not yet running PITR / streaming.

Any thoughts?

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Regards,

Soni Maula Harriz