This is the latest 0.7.0 release from Maven.
Regards Adam > On Aug 23, 2020, at 11:56 AM, Christofer Dutz <christofer.d...@c-ware.de> > wrote: > > Hi Adam, > > which version of PLC4X are you using? I know we had similar reports some time > ago, but had thought we had fixed them > > Chris > > > > Am 23.08.20, 16:40 schrieb "Adam Rossi" <ac.ro...@gmail.com>: > > Howdy. I am seeing a persistent thread being created for every > plcConnection connect which looks like the following: > > Name: nioEventLoopGroup-11-1 > State: RUNNABLE > Total blocked: 0 Total waited: 0 > > Stack trace: > java.base@13.0.2/sun.nio.ch.EPoll.wait(Native Method) > java.base@13.0.2 > /sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:120) > java.base@13.0.2 > /sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:124) > - locked io.netty.channel.nio.SelectedSelectionKeySet@f6df6b > - locked sun.nio.ch.EPollSelectorImpl@7ffc19 > java.base@13.0.2/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:141) > > app//io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:68) > app//io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:803) > app//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:457) > > app//io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) > > app//io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) > > app//io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) > java.base@13.0.2/java.lang.Thread.run(Thread.java:830) > > > This happens both when creating a connection directly or when using the > plc4x connection pool. > > In both cases I am obtaining the connection, reading some modbus values, > and then closing the connection. From the plcConnection metadata the > connection type I am using is: > > org.apache.plc4x.java.spi.connection.DefaultNettyPlcConnection > > Over time thousands of these nioEventLoopGroup threads are created and I > experience an OutOfMemory error in my program. > > Has anyone experienced this problem? Is there a way to force these threads > to close, timeout, or to specify the total thread limit? > > Thanks and Regards, Adam >
