i have an app to send and receive messages(simplified)

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.1.0"
       xmlns:cxf="http://cxf.apache.org/blueprint/core"
       xmlns:camelcxf="http://camel.apache.org/schema/blueprint/cxf"
       xmlns:bas="http://www.1c-esb.ru/basic-auth-service/"
       xmlns:jpa="http://aries.apache.org/xmlns/jpa/v2.0.0"
       xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.2.0"
       xsi:schemaLocation="
         http://www.osgi.org/xmlns/blueprint/v1.0.0 https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
         http://cxf.apache.org/blueprint/core http://cxf.apache.org/schemas/blueprint/core.xsd
         ">
    <bean id="artemisConnectionFactory" class="org.apache.activemq.artemis.jms.client.ActiveMQJMSConnectionFactory">
    <argument index="0" value="${ru.1c.esb.jms.url}"/>
    <argument index="1" value="${ru.1c.esb.jms.username}"/>
    <argument index="2" value="${ru.1c.esb.jms.password}"/>
</bean>

<bean id="pooledConnectionFactory" class="org.messaginghub.pooled.jms.JmsPoolConnectionFactory"
      init-method="start" destroy-method="stop">
    <property name="maxConnections" value="10"/>
    <property name="maxSessionsPerConnection" value="500"/>
    <property name="connectionFactory" ref="artemisConnectionFactory"/>
</bean>

<bean id="jms" class="org.apache.camel.component.jms.JmsComponent">
    <property name="connectionFactory" ref="pooledConnectionFactory"/>
</bean>

<camelContext xmlns="http://camel.apache.org/schema/blueprint">


    <route>
        <from uri="jetty:http://0.0.0.0:8089/put-message"/>
        <inOnly uri="jms:my-queue"/>
    </route>

    <route >
        <from uri="jetty:http://0.0.0.0:8089/get-message"/>
                <pollEnrich timeout="10">
                    <simple>jms:queue:my-queue</simple>
                </pollEnrich>
    </route>
 

</camelContext>

stack:

activemq artemis 2.25

camel 2.23.2

karaf 4.2

messaginghub/pooled-jms 1.0.6

artemis-jms-client-osgi 2.7.0

I am doing load testing (Apache Bench 5kb messages, 100 threads for sending and 100 threads for receiving) and I observe the following picture:
the service works for half an hour without problems(queue does not increase in size), but then the time for receiving messages from the queue increases, I was able to reduce some metrics and noticed that it increases oldGen(at the same time, the queue has not yet left in the PAGE mode)

XX:+UseParallelOldGC was used when starting Artemis

you can see how the time to receive messages from the queue increases

What could be the reason for the increase memory oldgen?

What other metrics can I apply to deal with the problem?