It seems to me that it is a bug in the implementation when mmap set to `false` value. I'll try to check.
Just for my curious, can you clarify why the `false` value is used? According to the comment [1] using mmap=true with the LOG_ONLY mode shows the best pefromance results. [1] https://issues.apache.org/jira/browse/IGNITE-6339?focusedCommentId=16281803&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16281803 On Fri, 23 Aug 2019 at 18:15, ihalilaltun <ibrahim.al...@segmentify.com> wrote: > > Hi Mmuzaf > > IGNITE_WAL_MMAP is false in our environment. > > Here is the configuration; > <?xml version="1.0" encoding="UTF-8"?> > > <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";> > <bean id="ignite.cfg" > class="org.apache.ignite.configuration.IgniteConfiguration"> > <property name="gridLogger"> > <bean class="org.apache.ignite.logger.log4j2.Log4J2Logger"> > <constructor-arg type="java.lang.String" > value="/etc/apache-ignite/ignite-log4j2.xml"/> > </bean> > </property> > <property name="communicationSpi"> > <bean > class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi"> > <property name="usePairedConnections" value="true"/> > </bean> > </property> > <property name="failureDetectionTimeout" value="60000"/> > <property name="systemThreadPoolSize" value="128"/> > <property name="publicThreadPoolSize" value="128"/> > <property name="queryThreadPoolSize" value="128"/> > <property name="serviceThreadPoolSize" value="128"/> > <property name="stripedPoolSize" value="128"/> > <property name="dataStreamerThreadPoolSize" value="64"/> > <property name="rebalanceThreadPoolSize" value="8"/> > > > <property name="peerClassLoadingEnabled" value="true"/> > > <property name="cacheConfiguration"> > <list> > > <bean > class="org.apache.ignite.configuration.CacheConfiguration"> > <property name="name" value="default"/> > <property name="atomicityMode" value="ATOMIC"/> > <property name="backups" value="1"/> > </bean> > </list> > </property> > > > <property name="discoverySpi"> > <bean > class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi"> > <property name="networkTimeout" value="10000"/> > <property name="ipFinder"> > <bean > class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder"> > <property name="addresses"> > <list> > > </list> > </property> > </bean> > </property> > </bean> > </property> > > > <property name="dataStorageConfiguration"> > <bean > class="org.apache.ignite.configuration.DataStorageConfiguration"> > <property name="defaultDataRegionConfiguration"> > <bean > class="org.apache.ignite.configuration.DataRegionConfiguration"> > <property name="persistenceEnabled" value="true"/> > <property name="checkpointPageBufferSize" value="#{ > 1L * 1024 * 1024 * 1024}"/> > <property name="maxSize" value="#{ 28L * 1024 * 1024 > * 1024 }"/> > </bean> > </property> > <property name="storagePath" value="/data-persist"/> > <property name="walPath" value="/data-wal"/> > <property name="walArchivePath" value="/data-wal"/> > <property name="walMode" value="LOG_ONLY"/> > <property name="walSegmentSize" value="#{ 128L * 1024 * 1024 > }"/> > <property name="walFlushFrequency" value="5000"/> > <property name="maxWalArchiveSize" value="#{ 2L * 1024 * > 1024 * 1024 }"/> > > > <property name="writeThrottlingEnabled" value="true"/> > <property name="checkpointFrequency" value="300000"/> > <property name="checkpointWriteOrder" value="SEQUENTIAL" /> > </bean> > </property> > </bean> > </beans> > > > > > ----- > İbrahim Halil Altun > Senior Software Engineer @ Segmentify > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/
