High CPU usage with PowerChart

Hi all,
while using the power chart in 8.3.6, i'm getting high CPU Threads.
I'm not sure how to reproduce the problem.

Does anybody have any guidance on how to debug this problem?

Thread [webserver-4125] id=4125, (RUNNABLE)

app//com.inductiveautomation.ignition.gateway.sqltags.history.query.columns.CalculatingResultNode.finishAggregationWindow(CalculatingResultNode.java:105)

app//com.inductiveautomation.ignition.gateway.sqltags.history.query.columns.CalculatingResultNode.processValue(CalculatingResultNode.java:214)

com.inductiveautomation.sqlhistorian.gateway.query.DatasourceQueryExecutor.loadValue(DatasourceQueryExecutor.java:594)

com.inductiveautomation.sqlhistorian.gateway.query.DatasourceQueryExecutor.loadValue(DatasourceQueryExecutor.java:92)

com.inductiveautomation.historian.gateway.query.execution.AbstractHistoryLoader.processData(AbstractHistoryLoader.java:175)

com.inductiveautomation.historian.gateway.query.writing.HistoryWriter.readData(HistoryWriter.java:343)

com.inductiveautomation.historian.gateway.query.writing.HistoryWriter.execute(HistoryWriter.java:243)

com.inductiveautomation.historian.gateway.HistorianManagerImpl.queryHistory(HistorianManagerImpl.java:1105)

app//com.inductiveautomation.ignition.gateway.sqltags.history.TagHistoryManagerBridge.queryHistory(TagHistoryManagerBridge.java:99)

app//com.inductiveautomation.ignition.gateway.tags.model.ProjectDefaultTagManagerFacade.queryHistory(ProjectDefaultTagManagerFacade.java:493)

com.inductiveautomation.perspective.gateway.components.PowerChartModelDelegate$TagHistoryFetch.fetch(PowerChartModelDelegate.java:270)

com.inductiveautomation.perspective.gateway.comm.FetchableCacheImpl.lambda$fetch$0(FetchableCacheImpl.java:42)

com.inductiveautomation.perspective.gateway.comm.FetchableCacheImpl$$Lambda$8961/0x000000080216a4a8.run(Unknown Source)

com.inductiveautomation.perspective.gateway.threading.BlockingWork.invokeBlockingTask(BlockingWork.java:35)

com.inductiveautomation.perspective.gateway.comm.FetchableCacheImpl.fetch(FetchableCacheImpl.java:42)

com.inductiveautomation.perspective.gateway.comm.Routes.handleFetch(Routes.java:2419)

com.inductiveautomation.perspective.gateway.comm.Routes$$Lambda$6832/0x00000008019a8450.handle(Unknown Source)

app//com.inductiveautomation.ignition.gateway.dataroutes.Route.service(Route.java:355)

app//com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupImpl.service(RouteGroupImpl.java:117)

app//com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupCollectionServlet.serviceInternal(RouteGroupCollectionServlet.java:151)

app//com.inductiveautomation.ignition.gateway.dataroutes.AbstractRouteGroupServlet.service(AbstractRouteGroupServlet.java:40)

app//jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)

app//org.eclipse.jetty.ee10.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1385)

app//org.eclipse.jetty.ee10.servlet.ServletHolder.handle(ServletHolder.java:751)

app//org.eclipse.jetty.ee10.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1622)

app//com.inductiveautomation.catapult.filters.GatewayFilter.doFilter(GatewayFilter.java:119)

app//jakarta.servlet.http.HttpFilter.doFilter(HttpFilter.java:97)

app//org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)

app//org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

app//org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1555)

app//org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:823)

app//org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:440)

app//org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:470)

app//org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)

app//org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:717)

app//org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1071)

app//org.eclipse.jetty.rewrite.handler.RewriteHandler$LastRuleHandler.handle(RewriteHandler.java:159)

app//org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)

app//org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)

app//org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)

app//org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)

app//org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)

app//org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)

app//org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)

app//org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)

app//org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)

app//org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:143)

app//org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805)

app//org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805)

app//org.eclipse.jetty.server.Server.handle(Server.java:182)

app//org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:677)

app//org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:416)

app//org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)

app//org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)

app//org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:612)

app//org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:413)

app//org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:155)

app//org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)

app//org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)

app//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:480)

app//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:443)

app//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)

app//org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)

app//org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311)

app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:981)

app//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1211)

app//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1166)

java.base@17.0.18/java.lang.Thread.run(Unknown Source)

Thanks

The PowerChart's default refresh behavior produces pathological chart loads when the historian is even slightly underpowered.

Slow down the chart's refresh.

I'm using the historical mode, so no refresh rate option.
I'm also using the default point count of 300.