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Score Feature - Slow Database Queries

Status
Open
Subject
Score Feature - Slow Database Queries
Version
15.x
18.x
21.x
22.x
23.x
Category
  • Error
Feature
Score
Resolution status
Accepted
Submitted by
albertgi
Lastmod by
albertgi
Rating
(1)
Description

It seems that the greater the number of users exist in the wiki, tied with a higher total score per user, generates very slow queries to the database, resulting in a very slow load time per page. I was experiencing 20 seconds + of load time per wiki page, as it was loading the scoring table every time.

Some samples from the database (not sure if useful).

  1. Time: 170131 16:54:54
  2. User@Host: giswikiadmgiswikiadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 334497
  3. Query_time: 28.076675 Lock_time: 0.000208 Rows_sent: 10 Rows_examined: 4229506

SET timestamp=1485899694;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. User@Host: eiadwikiadmeiadwikiadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344609
  2. Query_time: 21.994789 Lock_time: 0.000448 Rows_sent: 10 Rows_examined: 3325313

SET timestamp=1485955286;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. Time: 170201 8:21:56
  2. User@Host: eiadwikiadmeiadwikiadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344614
  3. Query_time: 22.215687 Lock_time: 0.000448 Rows_sent: 10 Rows_examined: 3325313

SET timestamp=1485955316;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. Time: 170201 8:22:42
  2. User@Host: eiadwikiadmeiadwikiadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344620
  3. Query_time: 21.846001 Lock_time: 0.000245 Rows_sent: 10 Rows_examined: 3325313

SET timestamp=1485955362;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. Time: 170201 8:23:33
  2. User@Host: citypediaadmcitypediaadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344638
  3. Query_time: 12.665043 Lock_time: 0.000552 Rows_sent: 10 Rows_examined: 2035464

use citypediap1;
SET timestamp=1485955413;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. Time: 170201 8:23:44
  2. User@Host: eiadwikiadmeiadwikiadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344639
  3. Query_time: 22.066348 Lock_time: 0.000236 Rows_sent: 10 Rows_examined: 3325313

use eiadwikip1;
SET timestamp=1485955424;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

  1. Time: 170201 8:23:52
  2. User@Host: citypediaadmcitypediaadm @ clwp001.city.a.ottawa.ca 10.140.12.238 Id: 344642
  3. Query_time: 13.027229 Lock_time: 0.000440 Rows_sent: 10 Rows_examined: 2035464

use citypediap1;
SET timestamp=1485955432;
select `recipientObjectId` as `login`,
`pointsBalance` as `score`
from `tiki_object_scores` tos
where `recipientObjectType`='user'
and tos.`id` = (select max(id) from `tiki_object_scores` where `recipientObjectId` = tos.`recipientObjectId` and `recipientObjectType`='user' group by `recipientObjectId`)
group by `recipientObjectId` order by `score` desc LIMIT 10 OFFSET 0;

Workaround
Disabled the score module
Importance
6
Priority
30
Demonstrate Bug (Tiki 19+)
Please demonstrate your bug on show2.tiki.org
 About show2.tiki.org

To help developers solve the bug, we kindly request that you demonstrate your bug on a show2.tiki.org instance. To start, simply select a version and click on "Create show2.tiki.org instance". Once the instance is ready (in a minute or two), as indicated in the status window below, you can then access that instance, login (the initial admin username/password is "admin") and configure the Tiki to demonstrate your bug. Priority will be given to bugs that have been demonstrated on show2.tiki.org.

Version: Create show2.tiki.org instance
Demonstrate Bug (older Tiki versions)
Please demonstrate your bug on show.tikiwiki.org
 About show.tikiwiki.org

To help developers solve the bug, we kindly request that you demonstrate your bug on a show.tikiwiki.org instance. To start, simply select a version and click on "Create show.tikiwiki.org instance". Once the instance is ready (in a minute or two), as indicated in the status window below, you can then access that instance, login (the initial admin username/password is "admin") and configure the Tiki to demonstrate your bug. Priority will be given to bugs that have been demonstrated on show.tikiwiki.org.

Version: Create show.tikiwiki.org instance
Ticket ID
6271
Created
Thursday 02 February, 2017 16:16:15 GMT-0000
by albertgi
LastModif
Thursday 18 February, 2021 17:00:42 GMT-0000

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