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Posted to issues@ignite.apache.org by "Stanilovsky Evgeny (JIRA)" <ji...@apache.org> on 2018/07/31 05:45:00 UTC
[jira] [Commented] (IGNITE-9135) TcpDiscovery - High Workload in
Stable topology (MessageWorkerQueueSize peaks)
[ https://issues.apache.org/jira/browse/IGNITE-9135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16563162#comment-16563162 ]
Stanilovsky Evgeny commented on IGNITE-9135:
--------------------------------------------
this strange formula introduced in: https://issues.apache.org/jira/browse/IGNITE-4799
> TcpDiscovery - High Workload in Stable topology (MessageWorkerQueueSize peaks)
> ------------------------------------------------------------------------------
>
> Key: IGNITE-9135
> URL: https://issues.apache.org/jira/browse/IGNITE-9135
> Project: Ignite
> Issue Type: Bug
> Reporter: Sergey Kosarev
> Priority: Major
> Attachments: IMG_20180731_014146_HDR.jpg, IMG_20180731_015439_HDR.jpg
>
>
> On High topology (about 200 servers/ 50 clients) we see often via jmx (TcpDiscoverySpiMBean) high MessageWorkerQueueSize peaks (>100) in stable cluster topology. Also very high number (about 250000) of ProcesedMessages, ReceivedMessages for TcpDiscoveryStatusCheckMessage, whereas TcpDiscoveryMetricsUpdateMessage is about 110000.
> Actually [org.apache.ignite.spi.discovery.tcp.ServerImpl.RingMessageWorker#metricsCheckFreq|https://github.com/apache/ignite/blob/5faffcee7cfaae90d3093e624d27f1b69554ea10/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java#L2560] value does not depend on topology size:
> private long metricsCheckFreq = 3 * spi.metricsUpdateFreq + 50;
>
> Why dow we have such peaks (see screenshots) on stable topology?
> Consider changing metricsCheckFreq formula to depend on topology size.
>
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