Performance problems, maybe because of table locking

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Author	Message
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 00:34:03
Script start
Timing:	Jan 19 2025 00:34:03
Module start 'layout'
Timing:	Jan 19 2025 00:34:03
Module start 'content'
Timing:	Jan 19 2025 00:34:04
Module end 'content'
Timing:	Jan 19 2025 00:34:04
Script end

Main resources:

Total runtime	0.7830 sec
Peak memory usage	4,096.0000 KB
Database Queries	60

Timing points:

Checkpoint	Start (sec)	Duration (sec)	Memory at start (KB)	Memory used (KB)
Script start	0.0000	0.0051	589.1797	152.6406
Module start 'layout'	0.0052	0.0036	741.8203	39.4766
Module start 'content'	0.0087	0.7727	781.2969	560.4141
Module end 'content'	0.7814	0.0015	1,341.7109	12.1250
Script end	0.7829		1,353.8359

Time accumulators:

Accumulator	Duration (sec)	Duration (%)	Count	Average (sec)
Ini load
Load cache	0.0033	0.4195	16	0.0002
Check MTime	0.0014	0.1766	16	0.0001
Mysql Total
Database connection	0.0008	0.0982	1	0.0008
Mysqli_queries	0.7265	92.7905	60	0.0121
Looping result	0.0007	0.0853	58	0.0000
Template Total	0.7484	95.6	2	0.3742
Template load	0.0021	0.2699	2	0.0011
Template processing	0.7462	95.3092	2	0.3731
Template load and register function	0.0001	0.0123	1	0.0001
states
state_id_array	0.0019	0.2381	1	0.0019
state_identifier_array	0.0018	0.2258	2	0.0009
Override
Cache load	0.0018	0.2265	21	0.0001
Sytem overhead
Fetch class attribute can translate value	0.0004	0.0559	2	0.0002
Fetch class attribute name	0.0015	0.1875	6	0.0002
XML
Image XML parsing	0.0008	0.1082	2	0.0004
class_abstraction
Instantiating content class attribute	0.0000	0.0022	8	0.0000
General
dbfile	0.0011	0.1464	24	0.0000
String conversion	0.0000	0.0019	4	0.0000
Note: percentages do not add up to 100% because some accumulators overlap

Templates used to render the page:

Usage	Requested template	Template	Template loaded
1	node/view/full.tpl	full/forum_topic.tpl	extension/sevenx/design/simple/override/templates/full/forum_topic.tpl
4	content/datatype/view/ezimage.tpl	<No override>	extension/sevenx/design/simple/templates/content/datatype/view/ezimage.tpl
4	content/datatype/view/ezxmltext.tpl	<No override>	extension/community_design/design/suncana/templates/content/datatype/view/ezxmltext.tpl
3	content/datatype/view/ezxmltags/line.tpl	<No override>	design/standard/templates/content/datatype/view/ezxmltags/line.tpl
5	content/datatype/view/ezxmltags/paragraph.tpl	<No override>	extension/ezwebin/design/ezwebin/templates/content/datatype/view/ezxmltags/paragraph.tpl
1	print_pagelayout.tpl	<No override>	extension/community/design/community/templates/print_pagelayout.tpl
Number of times templates used: 18 Number of unique templates used: 6

Time used to render debug report: 0.0001 secs