Hi Paul,

On Jan 4, 2009, at 8:18 PM, Paul Armstrong wrote:

> At 2009-01-04T20:08+0100, Vincent Massol wrote:
>> On Jan 4, 2009, at 5:49 PM, Elek Márton wrote:
>>
>>> Is it normal that the blog listing page
>>> (http://localhost:8080/xwiki/bin/view/Blog) is generated in 6-10
>>> seconds if I have only one word per title/content and in 25-30  
>>> seconds
>>> if I am using some more detailed articles?
>>>
>>> I am using XWiki 1.7 with 1.0 XWiki syntax + Mysql (with indexes).
>>>
>>> Is there any solution to achieve faster performance?
>>
>> Performance should be sub-second (a few ms) especially when executed
>> locally so you have a problem somewhere.
>
> As per this bug, this is a known problem:
> http://jira.xwiki.org/jira/browse/XWIKI-3022
>
>> Can you start by verifying if the problem is in your database, in  
>> your
>> web server (if you have any) or in XWiki?
>> Is this a large wiki?
>
> From the bug above:
> """
> A load of the front page (which includes the blog on my site) takes
> 24,452 calls to MySQL with 22,940 calls recorded in the query log  
> before
> the limit statement.
> I've got about 800 blog posts on my site so this seems a little
> excessive.
>
> During the time when it's doing the heavy querying, one core is  
> stuck at
> 100% utilization.
> """
>
> For me, it can take 20-30 seconds to load that page. The workaround  
> I'm
> using is to cache the page, but that's only so effective.
>
> Unfortunately, I've got a lot of things going on so haven't thrown
> dtrace at it yet.

If you install XWiki Enterprise you don't get this behavior so there  
must be something happening. Do you have a way to reproduce this  
starting with a clean install?

Alternatively if you could attach a DB dump that reproduces the pb  
maybe someone here could have a look see if it can be reproduced.

Paul, is this caused by the number of blog posts?

Last, we have a new Blog application which is going to be released  
real soon now. Would be good if you could try it and see if it helps.
Snapshot here:
http://maven.xwiki.org/snapshots/com/xpn/xwiki/platform/applications/xwiki-application-blog/1.0-SNAPSHOT/

Thanks
-Vincent
http://xwiki.com
http://massol.net
http://xwiki.org





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