[seam-issues] [JBoss JIRA] (JBSEAM-5148) High CPU due to multiple Java threads accessing HashMap in GraphicImageStore

[Suzumura Keishi (JIRA)]

Suzumura Keishi created JBSEAM-5148:
---------------------------------------

             Summary: High CPU due to multiple Java threads accessing HashMap in GraphicImageStore
                 Key: JBSEAM-5148
                 URL: https://issues.jboss.org/browse/JBSEAM-5148
             Project: Seam 2
          Issue Type: Bug
          Components: Performance and Scalability
    Affects Versions: 2.2.2.Final
         Environment: Red Hat JBoss Enterprise Application Platform 5.1
Java 1.6.0.26
Java HotSpot(TM) 64-Bit Server VM (20.1-b02 mixed mode)

            Reporter: Suzumura Keishi


High cpu and threads consuming the CPU have HashMap access at the top of the stack trace. 

top result is here:
---
top -b -n 1 -H -p8405 8405
[Thu Jul 26 14:53:11 2018]   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                                                                         
[Thu Jul 26 14:53:11 2018] 17181 jboss     25   0 5206m 4.3g  12m R 35.9 55.5  75:02.29 java                                                                                                                                                                            
[Thu Jul 26 14:53:11 2018] 17165 jboss     25   0 5206m 4.3g  12m R 33.9 55.5  68:29.77 java                                                                                                                                                                            
[Thu Jul 26 14:53:11 2018]  9854 jboss     25   0 5206m 4.3g  12m R 31.9 55.5 152:35.53 java                                                                                                                                                                            
[Thu Jul 26 14:53:11 2018]  9988 jboss     25   0 5206m 4.3g  12m R 31.9 55.5 131:00.16 java    

All PIDs have same stacks:
---
"ajp-8009-30" daemon prio=10 tid=0x00000000570bb000 nid=0x431d runnable [0x000000004bbcb000]
   java.lang.Thread.State: RUNNABLE
	at java.util.HashMap.put(HashMap.java:374)
	at org.jboss.seam.ui.graphicImage.GraphicImageStore.put(GraphicImageStore.java:74)
	at org.jboss.seam.ui.graphicImage.GraphicImageRendererBase.doEncodeBegin(GraphicImageRendererBase.java:66)
	at org.jboss.seam.ui.util.cdk.RendererBase.encodeBegin(RendererBase.java:79)
	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933)
	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
--
"ajp-8009-17" daemon prio=10 tid=0x00000000a75d1800 nid=0x430d runnable [0x000000004aebe000]
   java.lang.Thread.State: RUNNABLE
	at java.util.HashMap.put(HashMap.java:374)
	at org.jboss.seam.ui.graphicImage.GraphicImageStore.put(GraphicImageStore.java:74)
	at org.jboss.seam.ui.graphicImage.GraphicImageRendererBase.doEncodeBegin(GraphicImageRendererBase.java:66)
	at org.jboss.seam.ui.util.cdk.RendererBase.encodeBegin(RendererBase.java:79)
	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
--
"ajp-8009-4" daemon prio=10 tid=0x00000000af787800 nid=0x2704 runnable [0x00000000496a6000]
   java.lang.Thread.State: RUNNABLE
	at java.util.HashMap.put(HashMap.java:374)
	at org.jboss.seam.ui.graphicImage.GraphicImageStore.put(GraphicImageStore.java:74)
	at org.jboss.seam.ui.graphicImage.GraphicImageRendererBase.doEncodeBegin(GraphicImageRendererBase.java:66)
	at org.jboss.seam.ui.util.cdk.RendererBase.encodeBegin(RendererBase.java:79)
	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
--
"ajp-8009-1" daemon prio=10 tid=0x00000000ac5ec800 nid=0x267e runnable [0x0000000048999000]
   java.lang.Thread.State: RUNNABLE
	at java.util.HashMap.put(HashMap.java:374)
	at org.jboss.seam.ui.graphicImage.GraphicImageStore.put(GraphicImageStore.java:74)
	at org.jboss.seam.ui.graphicImage.GraphicImageRendererBase.doEncodeBegin(GraphicImageRendererBase.java:66)
	at org.jboss.seam.ui.util.cdk.RendererBase.encodeBegin(RendererBase.java:79)
	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)




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