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From "Daniel John Debrunner (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2344) 'java.lang.OutOfMemoryError: Java heap space' in NetworkServerThread
Date Thu, 22 Feb 2007 16:25:05 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12475073
] 

Daniel John Debrunner commented on DERBY-2344:
----------------------------------------------

I've been running jdbcapi._Suite on various svn revisions and saw inconsistent times with
the same revision number.
With 500444 I first saw ~975 seconds (which I think is in line with what the time used to
be on my machine) and then ~1690 seconds on a subsequent run (which is line for the slow behaviour).
So something strange is going on, but I'm not sure if it is in the tests or not, inconsistent
numbers make it hard to track the cause. :-(



> 'java.lang.OutOfMemoryError: Java heap space' in NetworkServerThread
> --------------------------------------------------------------------
>
>                 Key: DERBY-2344
>                 URL: https://issues.apache.org/jira/browse/DERBY-2344
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.3.0.0
>         Environment: JVM: Sun Microsystems Inc. - 1.5.0_05-b05
> OS: Fedora Core release 5 (Bordeaux) 32bits - Linux 2.6.17-1.2174_FC5 #1 Tue Aug 8 15:30:55
EDT 2006
> HW: 1 X  Intel(R) Pentium(R) 4 CPU 2.66GHz:  2656.261 MHz,  512 KB cache.  773284 kB
Total Memory.
> JVM: Sun Microsystems Inc. 1.5.0_06-b04
> OS: Solaris Nevada snv_27a X86 64 bits - SunOS 5.11 snv_27
> HW: 1 X x86 AuthenticAMD family 15 model 36 step 2 (AMD Turion(tm) 64 Mobile Technology
ML-37): 2000 MHz, unknown cache.  1023 Megabytes Total Memory
> JVM: Sun Microsystems Inc. - 1.5.0_05-b05
> OS: Microsoft Windows XP Professional - 5.1.2600 Service Pack 2 Build 2600 - CYGWIN_NT-5.1
1.5.18(0.132/4/2) 2005-07-02 20:30 Cygwin
> HW: 1 X Ferrari 4000 x86 Family 15 Model 36 Stepping 2 AuthenticAMD: ~2000 MHz, 2,048
MB cache. 1,022 Total Memory.
>            Reporter: Ole Solberg
>         Assigned To: Ole Solberg
>         Attachments: 13.zip, 14.zip, VM_Summary-1.txt, VM_Summary-507428JDK14Jvm15-clientjvm.jpg,
VM_Summary-507428JDK6Jvm6-clientjvm.jpg, VM_Summary-J507152DK14Jvm15-clientjvm.jpg, VM_Summary-serverJvm-PS_Old_Gen.jpg,
VM_Summary-serverJvm.jpg, VM_Summary-serverJvm.txt, VM_Summary.jpg
>
>
> I see this only on test machines with 1Gb of memory or less. Our lab-machines with 2Gb
mem show now problems.
> See http://dbtg.thresher.com/derby/test/trunk15/jvm1.5/testing/Limited/testSummary-508068.html
> Extract from a typical thread dump:
> "main" prio=1 tid=0x09e2a760 nid=0xef6 runnable [0xbfd89000..0xbfd8a418]
> 	at java.net.SocketInputStream.socketRead0(Native Method)
> 	at java.net.SocketInputStream.read(SocketInputStream.java:129)
> 	at org.apache.derby.client.net.Reply.fill(Unknown Source)
> 	at org.apache.derby.client.net.Reply.ensureALayerDataInBuffer(Unknown Source)
> 	at org.apache.derby.client.net.Reply.readDssHeader(Unknown Source)
> 	at org.apache.derby.client.net.Reply.startSameIdChainParse(Unknown Source)
> 	at org.apache.derby.client.net.NetConnectionReply.readExchangeServerAttributes(Unknown
Source)
> 	at org.apache.derby.client.net.NetConnection.readServerAttributesAndKeyExchange(Unknown
Source)
> 	at org.apache.derby.client.net.NetConnection.flowServerAttributesAndKeyExchange(Unknown
Source)
> 	at org.apache.derby.client.net.NetConnection.flowUSRIDPWDconnect(Unknown Source)
> 	at org.apache.derby.client.net.NetConnection.flowConnect(Unknown Source)
> 	at org.apache.derby.client.net.NetConnection.<init>(Unknown Source)
> 	at org.apache.derby.client.net.ClientJDBCObjectFactoryImpl.newNetConnection(Unknown
Source)
> 	at org.apache.derby.jdbc.ClientDriver.connect(Unknown Source)
> 	at java.sql.DriverManager.getConnection(DriverManager.java:525)
> 	- locked <0x8cda8a18> (a java.lang.Class)
> 	at java.sql.DriverManager.getConnection(DriverManager.java:171)
> 	- locked <0x8cda8a18> (a java.lang.Class)
> 	at org.apache.derbyTesting.junit.DriverManagerConnector.openConnection(DriverManagerConnector.java:76)
> 	at org.apache.derbyTesting.junit.DriverManagerConnector.openConnection(DriverManagerConnector.java:43)
> 	at org.apache.derbyTesting.junit.TestConfiguration.openDefaultConnection(TestConfiguration.java:764)
> 	at org.apache.derbyTesting.junit.BaseJDBCTestCase.openDefaultConnection(BaseJDBCTestCase.java:205)
> 	at org.apache.derbyTesting.junit.BaseJDBCTestCase.getConnection(BaseJDBCTestCase.java:90)
> 	at org.apache.derbyTesting.functionTests.tests.jdbcapi.BlobClob4BlobTest.setUp(BlobClob4BlobTest.java:56)
> 	at junit.framework.TestCase.runBare(TestCase.java:128)
> .
> .

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