title: Apache Ignite 2.6.0 - High latency in Partition mode with 6 nodes cluster
body: <ol>
  <li>I have a 6 node ignite cluster(version 2.6.0) with partition mode, want to use it only for caching to minimise the load on database. I am not pre-loading any data. </li>
  <li>App will try to read from cache, if data is missed, will go to database and then will add it back to cache. </li>
  <li>I am using both Key/Value and SQL caches. 
  During load testing, we found that both K/V and SQL caches are taking more 500 ms of time to get the data from cache. </li>
  <li>But with single instance of Ignite node, the results(GET request) are in the range of 10-20ms. </li>
  </ol>
  
  <p>Please let me know if I am missing anything. </p>
  
  <p>let me know if anymore data is needed. </p>
  
  <p>Server Configuration has 3 data regions.(Shared the configuration below) </p>
  
  <p>Server Side configration</p>
  
  <pre><code>&lt;beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" 
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd"&gt;
  
    &lt;bean id="grid.cfg" class="org.apache.ignite.configuration.IgniteConfiguration"&gt;
      &lt;property name="igniteInstanceName" value="igniteStart"/&gt;
      &lt;property name="discoverySpi" ref="discoverySpi"/&gt;
      &lt;property name="communicationSpi" ref="communicationSpi"/&gt;
      &lt;property name="dataStorageConfiguration" ref="dataStorageConfiguration" /&gt;
      &lt;property name="gridLogger" ref="gridLogger" /&gt;
    &lt;/bean&gt;
  
    &lt;bean id="gridLogger" class="org.apache.ignite.logger.log4j2.Log4J2Logger"&gt;
      &lt;constructor-arg type="java.lang.String" value="/opt/ignite/apache-ignite-fabric-2.6.0-bin/config/log4j2.xml"/&gt;
    &lt;/bean&gt;
  
    &lt;bean id="discoverySpi" class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi"&gt;
  
  
      &lt;property name="joinTimeout" value="0"/&gt;
      &lt;property name="reconnectCount" value="100"/&gt;
      &lt;property name="reconnectDelay" value="10000"/&gt;
  
      &lt;property name="ipFinder"&gt;
        &lt;bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder"&gt;
  &lt;property name="addresses"&gt;
            &lt;list&gt;
              &lt;value&gt;127.0.0.1&lt;/value&gt;
  
              &lt;value&gt;127.0.0.1:47500..47509&lt;/value&gt;
            &lt;/list&gt;
          &lt;/property&gt;
        &lt;/bean&gt;
      &lt;/property&gt;
  
      &lt;/bean&gt;
  
    &lt;bean id="communicationSpi" class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi"&gt;
      &lt;property name="messageQueueLimit" value="1024"/&gt;
      &lt;property name="slowClientQueueLimit" value="1000"/&gt;
    &lt;/bean&gt;
  
    &lt;bean id="dataStorageConfiguration" class="org.apache.ignite.configuration.DataStorageConfiguration"&gt;
      &lt;property name="defaultDataRegionConfiguration"&gt;
        &lt;bean class="org.apache.ignite.configuration.DataRegionConfiguration"&gt;
  
          &lt;property name="name" value="Default_Region"/&gt;
  
          &lt;property name="initialSize" value="#{15L * 1024 * 1024}"/&gt;
  
          &lt;property name="maxSize" value="#{20L * 1024 * 1024}"/&gt;
  
          &lt;property name="pageEvictionMode" value="RANDOM_2_LRU"/&gt;
        &lt;/bean&gt;
      &lt;/property&gt;
  
  &lt;property name="dataRegionConfigurations"&gt;
        &lt;list&gt;
          &lt;bean class="org.apache.ignite.configuration.DataRegionConfiguration"&gt;
            &lt;property name="name" value="Big_Region"/&gt;
  
            &lt;property name="initialSize" value="#{20.0D * 1024 * 1024 *1024}"/&gt;
  
            &lt;property name="maxSize" value="#{25.0D * 1024 * 1024 *1024}"/&gt;
            &lt;property name="pageEvictionMode" value="RANDOM_2_LRU"/&gt;
          &lt;/bean&gt;
  
  
          &lt;bean class="org.apache.ignite.configuration.DataRegionConfiguration"&gt;
            &lt;property name="name" value="Medium_Data_Region"/&gt;
  
            &lt;property name="initialSize" value="#{8.0D * 1024 * 1024 * 1024}"/&gt;
  
            &lt;property name="maxSize" value="#{10.0D * 1024 * 1024 * 1024}"/&gt;
            &lt;property name="pageEvictionMode" value="RANDOM_2_LRU"/&gt;
          &lt;/bean&gt;
  
          &lt;bean class="org.apache.ignite.configuration.DataRegionConfiguration"&gt;
            &lt;property name="name" value="Small_Data_Region"/&gt;
  
            &lt;property name="initialSize" value="#{4.0D * 1024 * 1024 * 1024}"/&gt;
  
            &lt;property name="maxSize" value="#{5.0D * 1024 * 1024 * 1024}"/&gt;
            &lt;property name="pageEvictionMode" value="RANDOM_2_LRU"/&gt;
          &lt;/bean&gt;
        &lt;/list&gt;
      &lt;/property&gt;
    &lt;/bean&gt;
  &lt;/beans&gt;
  </code></pre>