Yah, - TopLink, another fun for another money, I think the days of giant price schemas for software products are counted fast, friends know why ;-), but here is not the place to loose time with this. - 15 tables per module functionality, - ok, for 1:N I used the same FK design, correct success to ojb guys, they rock ...
-----Original Message----- From: Ebersole, Steven [mailto:[EMAIL PROTECTED] Sent: Dienstag, 18. März 2003 15:50 To: 'OJB Users List' Subject: RE: performance Yeah, "that app-sever" is OK for certain things and just piss-poor for others (but I guess what product isn't like that). Its Entity Bean support is not the best around (although I have heard that using TopLink as its CMP engine is a pretty good solution). Quick OT question. How in the world are you modeling a CRM app with only 15 tables? Also forgot to mention that I have set up assocaition tables for M:N relationships, but not for 1:N. 1:N are modeled with a FK on the one-side table. That is faster to access from a relational perspective. -----Original Message----- From: Malinescu, Cristian [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 18, 2003 8:43 AM To: 'OJB Users List' Subject: RE: performance Hi, surprising how much similarity, we are doing also some CRM and we used some commercial appsrv( like "t3://myserver:7001" ;-) ) till we become very piss off because of entity ejb performance and now we will migrate to tomcat and ojb ( currently 4.1.18/1.0rc1 ) and our performance test are till now very satisfactory ... Regards, Cristian -----Original Message----- From: Ebersole, Steven [mailto:[EMAIL PROTECTED] Sent: Dienstag, 18. März 2003 15:30 To: 'OJB Users List' Subject: RE: performance Thanks for the response. First the database schema is completely normalized. And unfortunately I cant work with just 15 tables; this is the begining of a CRM app and phase one alone has over 300 tables. All PK and FK are also set up as indexes. Not that it (should) matter much, but we also use Oracle 8i. As for the source code, this is just a simple test class (code below) and as such, there is only one PB instance. This is not yet even incurring the overhead of the EJB calls. public class TestCompanyMappings { private static final Logger log = Logger.getRootLogger(); public TestCompanyMappings() { System.setProperty( "OJB.properties", "properties/OJB.properties" ); System.setProperty( Context.PROVIDER_URL, "t3://myserver:7001" ); System.setProperty( Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory" ); } public static void main( String[] args ) { TestCompanyMappings me = new TestCompanyMappings(); me.execute(); } private void execute() { PersistenceBroker broker = null; Criteria crit = null; crit = new Criteria(); crit.addEqualTo( "id", new Integer(1) ); Query query = new QueryByCriteria( Company.class, crit ); try { broker = PersistenceBrokerFactory.defaultPersistenceBroker(); log.debug( "Starting query" ); java.util.Collection extent = broker.getCollectionByQuery( query ); log.debug( "Done query; iterating" ); java.util.Iterator iter = extent.iterator(); while (iter.hasNext()) { display( (Company)iter.next() ); } log.debug( "Done iterating" ); } catch( Throwable t ) { log.error( "Error occurred", t ); } finally { if (broker != null) { try { broker.close(); } catch( Throwable t ) {} } } } private void display( Company company ) { System.out.println( "***********************************************" ); System.out.println( " ID : " + company.getId() ); System.out.println( " Name : " + company.getName() ); System.out.println( "***********************************************" ); log.debug( "Forcing load of employees" ); System.out.println( " First contact last-name : " + ((Contact)company.getEmployees().iterator().next()).getPerson().getLastName( ) ); log.debug( "Employees loaded" ); } } -----Original Message----- From: Malinescu, Cristian [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 18, 2003 8:18 AM To: 'OJB Users List' Subject: RE: performance Hi My opinion is basically to take a look at your sourcecode first and don't forget to index your tables. For me, for my typical situation/project I can tell next details : My Oracle 8 database schema for test contains ~ 15 tables with more than 300 total defined columns, minimum indexed, with 1:n and n:m relations using indirection tables, and a total of more than 200.000 entries and a complete test suite where full schema is parsed takes under 20 seconds. Some development advice is to take care to create in your source code one PBKey/PersistenceBroker instance and to cache this for later usage. Regards, Cristian -----Original Message----- From: Ebersole, Steven [mailto:[EMAIL PROTECTED] Sent: Dienstag, 18. März 2003 15:03 To: OJB Users List (E-mail) Subject: performance I am running into a huge performance issue and was hoping to get some guidance on where to start looking for a problem. Then mapping portion causing the problem deals with employees for a company. I currently have this modeled as a bi-directional 1:n mapping (Company has a collection of employees and Employee has a reference to its Company). Both sides of the association are set to be proxies (collection-proxy and reference-proxy). I then tested by loading 2 companies, one with 175 employees and another with 1524 (the results were pretty much the same querying the Employee object by its company). Accessing the employee collection on the first company took 1.5 secs to load. Accessing the employee collection on the second took 2 minutes and 5 secs to load. Thats not even close to linear, so I am thinking I must be doing something wrong. Any help troubleshooting this would be greatly appreciated. Below are the mappings for both classes. I am using the PersistentFieldMaxPerformanceImpl for the PersistenceFieldClass and a JNDI Datasource. <!-- ############################################################################ ### ## Company entity type mapping ############################################################################ ### --> <class-descriptor class="com.vignette.it.apps.server.domain.entities.Company" table="COMPANY" > <field-descriptor name="id" column="COMP_ID" jdbc-type="INTEGER" primarykey="true" autoincrement="true" /> <field-descriptor name="parentId" column="PRNT_COMP_ID" jdbc-type="INTEGER" /> <field-descriptor name="pending" column="PENDING_APPRVL_FLG" jdbc-type="INTEGER" conversion="org.apache.ojb.broker.accesslayer.conversions.Boolean2IntFieldCo nversion" /> <field-descriptor name="name" column="NAME" jdbc-type="VARCHAR" /> <field-descriptor name="aliases" column="ALIASES" jdbc-type="VARCHAR" /> <field-descriptor name="numberOfVignetteSites" column="NUM_OF_VIGN_SITES" jdbc-type="INTEGER" /> <field-descriptor name="annualRevenueAmount" column="ANNUAL_REV" jdbc-type="DOUBLE" /> <field-descriptor name="annualRevenueCurrencyId" column="ANNUAL_REV_CURR_ID" jdbc-type="INTEGER" /> <field-descriptor name="potentialOpportunityAmount" column="POTNL_OPP" jdbc-type="DOUBLE" /> <field-descriptor name="potentialOpportunityCurrencyId" column="POTNL_OPP_CURR_ID" jdbc-type="INTEGER" /> <field-descriptor name="fortuneListId" column="FORT_LIST_ID" jdbc-type="INTEGER" /> <field-descriptor name="geographyId" column="GEO_ID" jdbc-type="INTEGER" /> <field-descriptor name="customerStatusId" column="CUST_PROD_STAT_ID" jdbc-type="INTEGER" /> <field-descriptor name="createdBy" column="CRTD_BY" jdbc-type="VARCHAR" /> <field-descriptor name="createdDate" column="CRTD_DT" jdbc-type="TIMESTAMP" conversion="org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlTimest ampFieldConversion" /> <field-descriptor name="modifiedBy" column="CHGD_BY" jdbc-type="VARCHAR" /> <field-descriptor name="modifiedDate" column="CHGD_DT" jdbc-type="TIMESTAMP" conversion="org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlTimest ampFieldConversion" /> <reference-descriptor name="parent" class-ref="com.vignette.it.apps.server.domain.entities.Company" proxy="true" > <foreignkey field-ref="parentId"/> </reference-descriptor> <reference-descriptor name="annualRevenueCurrency" class-ref="com.vignette.it.apps.server.domain.entities.Currency" proxy="true" > <foreignkey field-ref="annualRevenueCurrencyId"/> </reference-descriptor> <reference-descriptor name="potentialOpportunityCurrency" class-ref="com.vignette.it.apps.server.domain.entities.Currency" proxy="true" > <foreignkey field-ref="potentialOpportunityCurrencyId"/> </reference-descriptor> <reference-descriptor name="fortuneList" class-ref="com.vignette.it.apps.server.domain.entities.FortuneList" proxy="true" > <foreignkey field-ref="fortuneListId"/> </reference-descriptor> <reference-descriptor name="geography" class-ref="com.vignette.it.apps.server.domain.entities.Geography" proxy="true" > <foreignkey field-ref="geographyId"/> </reference-descriptor> <reference-descriptor name="customerStatus" class-ref="com.vignette.it.apps.server.domain.entities.CustomerStatus" proxy="true" > <foreignkey field-ref="customerStatusId"/> </reference-descriptor> <collection-descriptor name="addresses" element-class-ref="com.vignette.it.apps.server.domain.entities.CompanyAddres s" orderby="hqAddress" sort="DESC" proxy="true" > <inverse-foreignkey field-ref="companyId"/> </collection-descriptor> <collection-descriptor name="phones" element-class-ref="com.vignette.it.apps.server.domain.entities.PhoneNumber" proxy="true" indirection-table="COMP_PHONE_NUM_JT" > <fk-pointing-to-this-class column="COMP_ID"/> <fk-pointing-to-element-class column="PHONE_NUM_ID"/> </collection-descriptor> <collection-descriptor name="vignRelationships" element-class-ref="com.vignette.it.apps.server.domain.entities.CompanyRelati onship" proxy="true" indirection-table="COMP_COMP_TYPE_JT" > <fk-pointing-to-this-class column="COMP_ID"/> <fk-pointing-to-element-class column="COMP_TYPE_ID"/> </collection-descriptor> <collection-descriptor name="industries" element-class-ref="com.vignette.it.apps.server.domain.entities.Industry" proxy="true" indirection-table="COMP_IND_JT" > <fk-pointing-to-this-class column="COMP_ID"/> <fk-pointing-to-element-class column="IND_ID"/> </collection-descriptor> <collection-descriptor name="employees" element-class-ref="com.vignette.it.apps.server.domain.entities.Contact" proxy="true" > <inverse-foreignkey field-ref="companyId"/> </collection-descriptor> </class-descriptor> <!-- ############################################################################ ### ## Contact entity type mapping ############################################################################ ### --> <class-descriptor class="com.vignette.it.apps.server.domain.entities.Contact" table="COMP_PERS_JT" > <field-descriptor name="id" column="COMP_PERS_ID" jdbc-type="INTEGER" primarykey="true" autoincrement="true" /> <field-descriptor name="companyId" column="COMP_ID" jdbc-type="INTEGER" /> <field-descriptor name="personId" column="PERS_ID" jdbc-type="INTEGER" /> <field-descriptor name="managerId" column="MGR_COMP_PERS_ID" jdbc-type="INTEGER" /> <field-descriptor name="title" column="TITLE_1" jdbc-type="VARCHAR" /> <field-descriptor name="title2" column="TITLE_2" jdbc-type="VARCHAR" /> <field-descriptor name="primary" column="PRIMARY_FLG" jdbc-type="INTEGER" conversion="org.apache.ojb.broker.accesslayer.conversions.Boolean2IntFieldCo nversion" /> <field-descriptor name="active" column="ACTIVE_FLG" jdbc-type="INTEGER" conversion="org.apache.ojb.broker.accesslayer.conversions.Boolean2IntFieldCo nversion" /> <field-descriptor name="createdBy" column="CRTD_BY" jdbc-type="VARCHAR" /> <field-descriptor name="createdDate" column="CRTD_DT" jdbc-type="TIMESTAMP" conversion="org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlTimest ampFieldConversion" /> <field-descriptor name="modifiedBy" column="CHGD_BY" jdbc-type="VARCHAR" /> <field-descriptor name="modifiedDate" column="CHGD_DT" jdbc-type="TIMESTAMP" conversion="org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlTimest ampFieldConversion" /> <reference-descriptor name="company" class-ref="com.vignette.it.apps.server.domain.entities.Company" proxy="false" > <foreignkey field-ref="companyId"/> </reference-descriptor> <reference-descriptor name="person" class-ref="com.vignette.it.apps.server.domain.entities.Person" proxy="false" > <foreignkey field-ref="personId"/> </reference-descriptor> <reference-descriptor name="manager" class-ref="com.vignette.it.apps.server.domain.entities.Contact" proxy="true" > <foreignkey field-ref="managerId"/> </reference-descriptor> <collection-descriptor name="addresses" element-class-ref="com.vignette.it.apps.server.domain.entities.Address" proxy="true" indirection-table="COMP_PERS_ADDR_JT" > <fk-pointing-to-this-class column="COMP_PERS_ID"/> <fk-pointing-to-element-class column="ADDR_ID"/> </collection-descriptor> <collection-descriptor name="phones" element-class-ref="com.vignette.it.apps.server.domain.entities.PhoneNumber" proxy="true" indirection-table="COMP_PERS_PHONE_NUM_JT" > <fk-pointing-to-this-class column="COMP_PERS_ID"/> <fk-pointing-to-element-class column="PHONE_NUM_ID"/> </collection-descriptor> </class-descriptor> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
