Forums / Developer / Performance problems, maybe because of table locking

Performance problems, maybe because of table locking

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Ivo Lukac

Tuesday 07 July 2009 3:05:56 am

ezidentifier datatype locks tables to ensure uniqeness. It locks ezcontentobject_attribute and ezcontentclass_attribute.
Normally it sounds ok, but we have now more than 8 million rows in ezcontentobject_attribute and system with lot of inserting and editing. So I see time to time locked queries in mysql preocess list.
First question:
Why is ezcontentobject_attribute locked? It seems to me that locking ezcontentclass_attribute would be enough...

Could be that ezurlalias_ml locking in store function is also making problem so second questions is:
Can I disable ezurlaliases?

http://www.linkedin.com/in/ivolukac
http://www.netgen.hr/eng/blog
http://twitter.com/ilukac

André R.

Wednesday 05 August 2009 6:21:09 am

As for second: No, but are you using a older version? I think the locking was removed in favor of auto increment there in version 4.0.2 or something.

eZ Online Editor 5: http://projects.ez.no/ezoe || eZJSCore (Ajax): http://projects.ez.no/ezjscore || eZ Publish EE http://ez.no/eZPublish/eZ-Publish-Enterprise-Subscription
@: http://twitter.com/andrerom

Ivo Lukac

Thursday 06 August 2009 3:38:33 am

Yes it is 3.10.1 version. In the mean time I hacked kernel to lock only class attribute table and it works fine.

But it is nice to hear that when we upgrade it will work better without the hack :)

http://www.linkedin.com/in/ivolukac
http://www.netgen.hr/eng/blog
http://twitter.com/ilukac

André R.

Thursday 06 August 2009 5:51:47 am

Btw, the ezidentifier issue has also been resolved:
http://issues.ez.no/IssueView.php?Id=15037&activeItem=1&

eZ Online Editor 5: http://projects.ez.no/ezoe || eZJSCore (Ajax): http://projects.ez.no/ezjscore || eZ Publish EE http://ez.no/eZPublish/eZ-Publish-Enterprise-Subscription
@: http://twitter.com/andrerom

eZ debug

Timing: Jan 19 2025 19:54:55
Script start
Timing: Jan 19 2025 19:54:55
Module start 'content'
Timing: Jan 19 2025 19:54:55
Module end 'content'
Timing: Jan 19 2025 19:54:55
Script end

Main resources:

Total runtime0.1702 sec
Peak memory usage2,048.0000 KB
Database Queries141

Timing points:

CheckpointStart (sec)Duration (sec)Memory at start (KB)Memory used (KB)
Script start 0.00000.0070 589.1016180.8125
Module start 'content' 0.00700.0082 769.914197.9297
Module end 'content' 0.01510.1550 867.8438526.8750
Script end 0.1702  1,394.7188 

Time accumulators:

 Accumulator Duration (sec) Duration (%) Count Average (sec)
Ini load
Load cache0.00372.1677200.0002
Check MTime0.00150.8613200.0001
Mysql Total
Database connection0.00090.521510.0009
Mysqli_queries0.117368.91081410.0008
Looping result0.00130.76091390.0000
Template Total0.154790.910.1547
Template load0.00100.564010.0010
Template processing0.153890.316010.1538
Override
Cache load0.00070.388310.0007
Sytem overhead
Fetch class attribute can translate value0.00060.362410.0006
XML
Image XML parsing0.00020.133310.0002
General
dbfile0.00885.1735200.0004
String conversion0.00000.005330.0000
Note: percentages do not add up to 100% because some accumulators overlap

CSS/JS files loaded with "ezjscPacker" during request:

CacheTypePacklevelSourceFiles
CSS0extension/community/design/community/stylesheets/ext/jquery.autocomplete.css
extension/community_design/design/suncana/stylesheets/scrollbars.css
extension/community_design/design/suncana/stylesheets/tabs.css
extension/community_design/design/suncana/stylesheets/roadmap.css
extension/community_design/design/suncana/stylesheets/content.css
extension/community_design/design/suncana/stylesheets/star-rating.css
extension/community_design/design/suncana/stylesheets/syntax_and_custom_tags.css
extension/community_design/design/suncana/stylesheets/buttons.css
extension/community_design/design/suncana/stylesheets/tweetbox.css
extension/community_design/design/suncana/stylesheets/jquery.fancybox-1.3.4.css
extension/bcsmoothgallery/design/standard/stylesheets/magnific-popup.css
extension/sevenx/design/simple/stylesheets/star_rating.css
extension/sevenx/design/simple/stylesheets/libs/fontawesome/css/all.min.css
extension/sevenx/design/simple/stylesheets/main.v02.css
extension/sevenx/design/simple/stylesheets/main.v02.res.css
JS0extension/ezjscore/design/standard/lib/yui/3.17.2/build/yui/yui-min.js
extension/ezjscore/design/standard/javascript/jquery-3.7.0.min.js
extension/community_design/design/suncana/javascript/jquery.ui.core.min.js
extension/community_design/design/suncana/javascript/jquery.ui.widget.min.js
extension/community_design/design/suncana/javascript/jquery.easing.1.3.js
extension/community_design/design/suncana/javascript/jquery.ui.tabs.js
extension/community_design/design/suncana/javascript/jquery.hoverIntent.min.js
extension/community_design/design/suncana/javascript/jquery.popmenu.js
extension/community_design/design/suncana/javascript/jScrollPane.js
extension/community_design/design/suncana/javascript/jquery.mousewheel.js
extension/community_design/design/suncana/javascript/jquery.cycle.all.js
extension/sevenx/design/simple/javascript/jquery.scrollTo.js
extension/community_design/design/suncana/javascript/jquery.cookie.js
extension/community_design/design/suncana/javascript/ezstarrating_jquery.js
extension/community_design/design/suncana/javascript/jquery.initboxes.js
extension/community_design/design/suncana/javascript/app.js
extension/community_design/design/suncana/javascript/twitterwidget.js
extension/community_design/design/suncana/javascript/community.js
extension/community_design/design/suncana/javascript/roadmap.js
extension/community_design/design/suncana/javascript/ez.js
extension/community_design/design/suncana/javascript/ezshareevents.js
extension/sevenx/design/simple/javascript/main.js

Templates used to render the page:

UsageRequested templateTemplateTemplate loadedEditOverride
1pagelayout.tpl<No override>extension/sevenx/design/simple/templates/pagelayout.tplEdit templateOverride template
 Number of times templates used: 1
 Number of unique templates used: 1

Time used to render debug report: 0.0001 secs