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Re: Query taking 2 minutes [message #163684 is a reply to message #161949]

Wed, 24 November 2010 10:34

Ernesto

Messages: 413
Registered: August 2005

Karma:

Senior Member

I've been trying to wrestle with this when trying to adjust the selmsg (Today's Posts / Unread posts / Message Navigator) to dislay only topics with new messages instead of all the messages.

The problem occurs when trying to "order by" and I cannot for the life of me tune it to perform better.

For example if you register a new user, read a few old posts and then hit the unread messages button found in the SHOW template, it will take a VERY long time to finish up.

I tried removing the ORDER BY and use a GROUP BY instead, and then limit it, but it doesn't work well since the ordering comes out bananas, showing several year old messages etc.

I was thinking that perhaps one could insert a timelimit, but that wont help on a busy forum with hundreds of posts per day etc.

I haven't given up completely, but until we solve this, I think the selmsg page should be disabled on new releases, it is rather easy to kill a server by doing a few calls to the message navigator or "unread" messages in selmsg.

Ginnunga Gaming

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[Message index]

		Query taking 2 minutes By: P_G_ on Fri, 19 February 2010 15:33
		Re: Query taking 2 minutes By: naudefj on Fri, 19 February 2010 19:58
		Re: Query taking 2 minutes By: P_G_ on Fri, 19 February 2010 20:09
		Re: Query taking 2 minutes By: naudefj on Fri, 19 February 2010 20:54
		Re: Query taking 2 minutes By: P_G_ on Sat, 20 February 2010 12:54
		Re: Query taking 2 minutes By: naudefj on Sun, 21 February 2010 00:08
		Re: Query taking 2 minutes By: P_G_ on Mon, 22 February 2010 10:57
		Re: Query taking 2 minutes By: naudefj on Mon, 22 February 2010 16:06
		Re: Query taking 2 minutes By: P_G_ on Mon, 22 February 2010 17:18
		Re: Query taking 2 minutes By: naudefj on Tue, 23 February 2010 19:19
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 10:34
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 11:23
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 11:25
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 12:01
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 12:04
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 12:21
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 12:30
		Re: Query taking 2 minutes By: naudefj on Wed, 24 November 2010 12:47
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 13:35
		Re: Query taking 2 minutes By: Ernesto on Wed, 24 November 2010 13:41
		Re: Query taking 2 minutes By: eclipsewebmaster on Thu, 11 August 2011 14:23
		Re: Query taking 2 minutes By: naudefj on Mon, 17 October 2011 10:03

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