Re: Maximum Possible Insert Performance? - Mailing list pgsql-performance

From Shridhar Daithankar
Subject Re: Maximum Possible Insert Performance?
Date
Msg-id 3FC2F17A.5050307@persistent.co.in
Whole thread Raw
In response to Re: Maximum Possible Insert Performance?  (William Yu <wyu@talisys.com>)
Responses Re: Maximum Possible Insert Performance?
List pgsql-performance
William Yu wrote:

> This is an intriguing thought which leads me to think about a similar
> solution for even a production server and that's a solid state drive for
> just the WAL. What's the max disk space the WAL would ever take up?
> There's quite a few 512MB/1GB/2GB solid state drives available now in
> the ~$200-$500 range and if you never hit those limits...

Maximum number of WAL segments at any time in 2*(number of checkpoint
segments)+1 IIRC.

So if you have 3 checkpoint segments, you can not have more than 7 WAL segments
at any time. Give or take 1.

Correct me if I am wrong..

  Shridhar


pgsql-performance by date:

Previous
From: Christopher Browne
Date:
Subject: Re: [HACKERS] More detail on settings for pgavd?
Next
From: Rob Fielding
Date:
Subject: Re: Where to start for performance problem?