I tested Tomcat 7 because I have to check 3 problems with Tomcat :
1.Tomcat generally crushes after 3-6 hot redeploys
2.Qcadoo MES may have memory leaks on startup and shutdown
3.exploded WAR's have many problems, maybe configuring Tomcat to not explode the WAR is an solution
I check this problems with application with spring, hibernate and struts integration example, which we find in this page:
http://www.mkyong.com/struts/struts-spring-hibernate-integration-example/
When I downloads Tomcat 7 and I decided , that I pick up third problem, I find and open folder Tomcat, next open folder conf and open file server.xml
When we open this file, we find verse <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> ,
and we change this vers for <Host name="localhost" appBase="webapps" unpackWARs="false" autoDeploy="false">
When I change and safe this file, I started Tomcat 7 and I check is Tomcat 7 working.
Tomcat 7 working after this change, Next I decided, that I pick up second problem with many leaks.
I started Tomcat 7 , I found procces in System Monitor in Ubuntu, and I looks to use my memory by tomcat
After started my computer use 593980k but Tomcat used 4.4 % it's 26135k , next I deploy and started applicattion with spring, hibernate and struts integration example by tomcat 7 manager ,and I checked , how Tomcat 7 works and look to many leaks, I give table with my analysis, in this table show percentage use memory by tomcat 7 and use memory in my computer,
Percentage use memory after deploy application |
Use Memory |
Memory which use by Tomcat 7 |
Percentage use memory udeploy applicattion |
Use Memory |
Memory which use by Tomcat 7 |
|---|---|---|---|---|---|
4.9 % |
606712k |
29728 k |
4.9 % |
585904k |
28709k |
5.4 % |
611612k |
33027k |
5.4 % |
590780k |
31902k |
5.6 % |
613836k |
34374k |
5.6 % |
593136k |
33215k |
5.8 % |
616192k |
35739k |
5.8% |
595360k |
33945k |
5.7 % |
616200k |
35123k |
5.7% |
595536k |
33945k |
5.8 % |
617432k |
35811k |
5.8 % |
596476k |
34595k |
5.6 % |
615332k |
34458k |
5.6 % |
594492k |
33291k |
5.7 % |
616828k |
35159k |
5.7% |
595988k |
33971k |
5.9% |
618192k |
36473k |
5.9% |
597600k |
35258k |
6.0 % |
619548k |
37172k |
6.0% |
598708k |
35922k |
5.5 % |
614952k |
33822k |
5.5 % |
594120k |
32676k |
5.6 % |
615084k |
34444k |
5.6% |
594244k |
33277k |
5.5 % |
615704k |
33863k |
5.5 % |
594732k |
32710k |
5.7 % |
616952k |
35166k |
5.7 % |
596360k |
33992k |
5.8 % |
620424k |
35984k |
5.8 % |
600204k |
34811k |
5.9 % |
622416k |
36722k |
5.9 % |
601444k |
35485k |
5.6 % |
619804k |
34709k |
5.6 % |
599088k |
33548k |
5.7 % |
621160k |
35406k |
5.7 % |
600320k |
34218k |
After this analysis , Tomcat 7 don't make many leaks memory. Tomcat 7 use maximum 6.0 % my memory which was use by my computer.
Maximum Percentage use memory after deploy application: 6,0%
Maximum Memory which use by Tomcat 7 after deploy applicattion: 37172 k
Maximum Percentage use memory after udeploy application: 6,0% to bomb out
Maximum Memory which use by Tomcat 7 after udeploy applicattion: 35922k
In logs is everyting good, I don't found errors,
While I made tests, run application, stop application , tomcat 7 don't crushed and to bomb out.
After this tests we may Deploying mes-application on Tomcat 7 we tutorial find in this page:
http://wiki.qcadoo.org/display/QCDMESBLP/Deploying+mes-application+on+Tomcat+7