Item8617: WebStatistics total topic history hangs

Priority:	CurrentState:	AppliesTo:	Component:	WaitingFor:
Urgent	Closed	Engine

The full history of WebStats hangs working with rdiff filling the server cpu. Is it due to the fact that there are too many revisions? I have tryed with an old twiki version and there is no delay.

You can try these:

http://trunk.foswiki.org/bin/rdiff/Tasks/WebStatistics?type=history

http://www.foswiki.org/bin/rdiff/Tasks/WebStatistics?type=history

The delay should be due to the elevate number of revisions. I have deleted the ",v" file and everything works fine. Still, note that with TWiki (ver 01 Sep 2004 $Rev: 1742 $) WebStats history works fine, even with a large number of revisions.

-- LucaVenturini - 25 Feb 2010

I strongly suspect that this is due to FSA caching the output.

-- CrawfordCurrie - 25 Mar 2010

The reality is you are just given that ollusion with twiki; it is still processing every revision and killing the server, it's just outputting them all so it looks busy.

What is really needed is to cap the number of revisions displayed in a diff history.

Done, and made rdiff handle non-sequential revisions.

Really it would be better to use a paging approach, but we just don't have the infrastructure ATM.

-- CrawfordCurrie - 06 May 2010