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Bug
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Resolution: Unresolved
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Critical
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None
- Jenkins 2.121.1
Our slaves are windows docker container. After some time they start hanging with lots of threads running SwapSpaceMonitor. We see thread spikes of up to 3000 threads which vanish again after several minutes. Then we are back to "normal" of about 50-60 threads.
pool-1-thread-10 for JNLP4-connect connection to xxx/x.x.x.x:x:37121 id=41272203
"pool-1-thread-10 for JNLP4-connect connection to xxx/x.x.x.x:x:37121 id=41272203" Id=38 Group=main RUNNABLE
at com.sun.jna.Pointer.<clinit>(Pointer.java:41)
at com.sun.jna.Structure.<clinit>(Structure.java:2078)
at org.jvnet.hudson.Windows.monitor(Windows.java:42)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:124)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:114)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at hudson.remoting.Engine$1$$Lambda$5/219336948.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)
Number of locked synchronizers = 1
- java.util.concurrent.ThreadPoolExecutor$Worker@3d03e79a
...
pool-1-thread-1381 for JNLP4-connect connection to xxx/x.x.x.x:x:37121 id=48119563
"pool-1-thread-1381 for JNLP4-connect connection to xxx/x.x.x.x:x id=48119563" Id=1437 Group=main RUNNABLE
at org.jvnet.hudson.Windows.monitor(Windows.java:42)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:124)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:114)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at hudson.remoting.Engine$1$$Lambda$5/219336948.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)
Number of locked synchronizers = 1
- java.util.concurrent.ThreadPoolExecutor$Worker@12e794b8
pool-1-thread-1390 for JNLP4-connect connection to xxx/x.x.x.x:x:37121 id=48183972
"pool-1-thread-1390 for JNLP4-connect connection to xxx/x.x.x.x:x:37121 id=48183972" Id=1446 Group=main RUNNABLE
at org.jvnet.hudson.Windows.monitor(Windows.java:42)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:124)
at hudson.node_monitors.SwapSpaceMonitor$MonitorTask.call(SwapSpaceMonitor.java:114)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at hudson.remoting.Engine$1$$Lambda$5/219336948.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)
Number of locked synchronizers = 1
- java.util.concurrent.ThreadPoolExecutor$Worker@4bba9e41
...