| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | Jason Long <mailing(dot)list(at)supernovasoftware(dot)com> |
| Cc: | pgsql <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Decreasing WAL size effects |
| Date: | 2008-10-29 06:13:20 |
| Message-ID: | 4907FF00.4040008@commandprompt.com |
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| Lists: | pgsql-general pgsql-hackers |
Jason Long wrote:
> I am planning on setting up PITR for my application.
> I also have to ship them off site using a T1 so setting the time to
> automatically switch files will just waste bandwidth if they are still
> going to be 16 MB anyway.
>
> *1. What is the effect of recompiling and reducing the default size of
> the WAL files?
Increased I/O
> 2. What is the minimum suggested size?
16 megs, the default.
> 3. If I reduce the size how will this work if I try to save a document
> that is larger than the WAL size?
You will create more segments.
Joshua D. Drake
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