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From "Shashank Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JCR-3803) Local cache contention lead to performance degradation
Date Thu, 14 Aug 2014 04:34:11 GMT
Shashank Gupta created JCR-3803:
-----------------------------------

             Summary: Local cache contention lead to performance degradation
                 Key: JCR-3803
                 URL: https://issues.apache.org/jira/browse/JCR-3803
             Project: Jackrabbit Content Repository
          Issue Type: Improvement
          Components: jackrabbit-data
    Affects Versions: 2.8
            Reporter: Shashank Gupta
             Fix For: 2.8.1


stack trace of few threads. (full dump attached)  one thread holding  monitor <0x000000040298beb0>
while other *BLOCKED* on it. 

{noformat}
"115.248.212.49 [1407765540589] GET /libs/dam/gui/content/commons/sidepanels/search/items/searchpanel/result/content/items/searchpages.html
HTTP/1.1" prio=10 tid=0x00007f27e0001000 nid=0x2503 runnable [0x00007f2458468000]
   java.lang.Thread.State: RUNNABLE
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:152)
	at java.net.SocketInputStream.read(SocketInputStream.java:122)
	at sun.security.ssl.InputRecord.readFully(InputRecord.java:442)
	at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:554)
	at sun.security.ssl.InputRecord.read(InputRecord.java:509)
	at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
	- locked <0x0000000705de7ea8> (a java.lang.Object)
	at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:884)
	at sun.security.ssl.AppInputStream.read(AppInputStream.java:102)
	- locked <0x0000000705df1008> (a sun.security.ssl.AppInputStream)
	at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:204)
	at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:182)
	at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:138)
	at java.io.FilterInputStream.read(FilterInputStream.java:133)
	at java.io.FilterInputStream.read(FilterInputStream.java:133)
	at java.io.FilterInputStream.read(FilterInputStream.java:133)
	at java.io.FilterInputStream.read(FilterInputStream.java:107)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)
	at org.apache.jackrabbit.core.data.LocalCache.store(LocalCache.java:145)
	- locked <0x000000040298beb0> (a org.apache.jackrabbit.core.data.LocalCache)
	at org.apache.jackrabbit.core.data.CachingDataStore.getLength(CachingDataStore.java:562)
	at org.apache.jackrabbit.core.data.CachingDataRecord.getLength(CachingDataRecord.java:54)
	at org.apache.jackrabbit.core.value.BLOBInDataStore.getSize(BLOBInDataStore.java:96)
{noformat}

{noformat}
"115.248.212.49 [1407766318844] GET /assets.html/content/dam/archive-2001-2014/Content%20From%20HDD
HTTP/1.1" prio=10 tid=0x00007f27e800a800 nid=0x28bc waiting for monitor entry [0x00007f2458661000]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at org.apache.jackrabbit.core.data.LocalCache.getFileIfStored(LocalCache.java:244)
	- waiting to lock <0x000000040298beb0> (a org.apache.jackrabbit.core.data.LocalCache)
	at org.apache.jackrabbit.core.data.CachingDataStore.getRecord(CachingDataStore.java:394)
	- locked <0x0000000402f6ade0> (a org.apache.jackrabbit.aws.ext.ds.S3DataStore)
	at org.apache.jackrabbit.core.value.BLOBInDataStore.getDataRecord(BLOBInDataStore.java:151)
	at org.apache.jackrabbit.core.value.BLOBInDataStore.getSize(BLOBInDataStore.java:96)
	at org.apache.jackrabbit.core.value.InternalValue.getLength(InternalValue.java:654)
	at org.apache.jackrabbit.core.PropertyImpl.getLength(PropertyImpl.java:237)
	at org.apache.jackrabbit.core.PropertyImpl.getLength(PropertyImpl.java:835)
	at org.apache.sling.jcr.resource.internal.helper.jcr.JcrNodeResource.setMetaData(JcrNodeResource.java:307)
{noformat}

{noformat}
"115.248.212.49 [1407766115000] GET /libs/dam/gui/content/commons/sidepanels/search/items/searchpanel/result.html
HTTP/1.1" prio=10 tid=0x00007f27e4028000 nid=0x2712 waiting for monitor entry [0x00007f2457490000]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at org.apache.jackrabbit.core.data.LocalCache.store(LocalCache.java:138)
	- waiting to lock <0x000000040298beb0> (a org.apache.jackrabbit.core.data.LocalCache)
	at org.apache.jackrabbit.core.data.CachingDataStore.getLength(CachingDataStore.java:562)
	at org.apache.jackrabbit.core.data.CachingDataRecord.getLength(CachingDataRecord.java:54)
	at org.apache.jackrabbit.core.value.BLOBInDataStore.getSize(BLOBInDataStore.java:96)
	at org.apache.jackrabbit.core.value.InternalValue.getLength(InternalValue.java:654)
	at org.apache.jackrabbit.core.PropertyImpl.getLength(PropertyImpl.java:237)
	at org.apache.jackrabbit.core.PropertyImpl.getLength(PropertyImpl.java:835)
	at org.apache.sling.jcr.resource.internal.helper.jcr.JcrNodeResource.setMetaData(JcrNodeResource.java:307)
{noformat}



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