On Mon, Aug 11, 2014 at 7:48 PM, Isuru Haththotuwa <isu...@apache.org>
wrote:
> Hi,
>
> Yes, currently Stratos Manager loads all Subcriptions at startup, and I
> agree this is not a very good practice. To improve this, I can think of two
> methods:
>
> 1. write each tenant's Subscriptions to tenant's own registry, and then
> load them to memory model when the tenant is loading. This information can
> be again removed when the tenant is unloaded.
>
+1
> 2. load some meta information related to the Subscriptions without loading
> everything at server startup, and then load relevant Subscriptions when the
> tenant is getting loaded (lazy loading). Again, we can remove the unloaded
> tenant's information from the memory model.
>
> WDYT?
>
>
> On Mon, Aug 11, 2014 at 7:31 PM, Amila Maha Arachchi <ami...@wso2.com>
> wrote:
>
>> Hi all,
>>
>> Recently we were observing a delay when SM is starting in our stratos
>> setup. See the following log segment. It seems ADCManagement component
>> takes a lot of time (in this case 3 minutes).
>>
>> TID: [0] [SCC] [2014-08-11 06:49:39,850] INFO
>> {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
>> - Topology event message delegator started
>> {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
>>
>> TID: [0] [SCC] [2014-08-11 06:49:40,564] WARN
>> {org.wso2.andes.common.QpidProperties} - Unable to find resource
>> qpidversion.properties from classloader
>> {org.wso2.andes.common.QpidProperties}
>>
>> TID: [0] [SCC] [2014-08-11 06:50:01,119] INFO
>> {org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor}
>> - Topology initialized
>> {org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor}
>>
>> TID: [0] [SCC] [2014-08-11 06:50:01,120] INFO
>> {org.apache.stratos.manager.topology.receiver.StratosManagerTopologyEventReceiver}
>> - [CompleteTopologyEventListener] Received: class
>> org.apache.stratos.messaging.event.topology.CompleteTopologyEvent
>> {org.apache.stratos.manager.topology.receiver.StratosManagerTopologyEventReceiver}
>>
>>
>>
>>
>> TID: [0] [SCC] [2014-08-11 06:52:49,971] INFO
>> {org.apache.stratos.manager.internal.ADCManagementServerComponent} - ADC
>> management server component is activated
>> {org.apache.stratos.manager.internal.ADCManagementServerComponent}
>>
>> TID: [0] [SCC] [2014-08-11 06:52:50,020] INFO
>> {org.wso2.carbon.core.init.JMXServerManager} - JMX Service URL :
>> service:jmx:rmi://localhost:11111/jndi/rmi://localhost:9999/jmxrmi
>> {org.wso2.carbon.core.init.JMXServerManager}
>>
>> TID: [0] [SCC] [2014-08-11 06:52:50,247] INFO
>> {org.wso2.carbon.ntask.core.impl.AbstractQuartzTaskManager} - Task
>> scheduled: [-1234][TENANT_SYNC_TASK_TYPE][TENANT_SYNC_TASK]
>> {org.wso2.carbon.ntask.core.impl.AbstractQuartzTaskManager}
>>
>> TID: [0] [SCC] [2014-08-11 06:52:50,248] INFO
>> {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent} - Server
>> : Apache Stratos Controller-4.0.0-SNAPSHOT
>> {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent}
>>
>> TID: [0] [SCC] [2014-08-11 06:52:50,248] INFO
>> {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent} - WSO2
>> Carbon started in 283 sec
>> {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent}
>>
>> TID: [0] [SCC] [2014-08-11 06:52:50,656] INFO
>> {org.wso2.carbon.ui.internal.CarbonUIServiceComponent} - Mgt Console URL
>> : https://10.0.60.12:9443/carbon/
>> {org.wso2.carbon.ui.internal.CarbonUIServiceComponent}
>>
>>
>> I came to know, this is loading all the subscriptions when starting.
>>
>> At the moment, we have about 600 subscriptions in the environment. With
>> the number of tenants growing, this can cause major problems.
>>
>> What are the solutions we have to address this?
>>
>> Regards,
>> Amila.
>>
>> --
>> *Amila Maharachchi*
>> Senior Technical Lead
>> WSO2, Inc.; http://wso2.com
>>
>> Blog: http://maharachchi.blogspot.com
>> Mobile: +94719371446
>>
>> --
>> <%2B94719371446>
>> Thanks and Regards,
>>
>> Isuru H.
>> <%2B94719371446>
>> +94 716 358 048 <%2B94719371446>* <http://wso2.com/>*
>>
>>
>> * <http://wso2.com/>*
>>
>>
>>
--
Best Regards,
Nirmal
Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
