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