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Re: New statistics for WAL buffer dirty writes

Simon Riggs <simon@2ndquadrant.com>

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From: Simon Riggs <simon@2ndQuadrant.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Magnus Hagander <magnus@hagander.net>, Euler Taveira <euler@timbira.com>, Satoshi Nagayasu <snaga@uptime.jp>, Pgsql Hackers <pgsql-hackers@postgresql.org>
Date: 2012-07-29T19:48:53Z
Lists: pgsql-hackers 
On 7 July 2012 18:06, Robert Haas <robertmhaas@gmail.com> wrote:

> Sure, but I doubt that would be as informative as this.  It's no big deal if you hit 100% every once in a while; what you really want to know is whether it's happening once per second or once per week.

Agreed.

I can't see an easy way of recording the high water mark % and I'm not
sure how we'd use it if we had it.

Let's just track how often we run out of space because that is when
bad things happen, not before.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
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