17 Oct
2006
17 Oct
'06
12:11 a.m.
Dear xwiki-users,
We are getting a Java exception when saving a 7MB attachment. The
attachment appears to be attached properly, since it appears in the
attachment list and can be downloaded after the error. However, after
attaching four or five files the server becomes so unresponsive that a
restart is required. Configuration Info:
OS: Windows 2000 Server
RAM: 1GB
JDK: 1.5.0_8
App Server: JBoss 4.0.4
Database: MySQL 4.1.21
Note that JBoss is run with -Xmx 512M, and increasing that to -Xmx 1024M
has no effect.
I've gone through the attachment documentation and mailing list archives
and didn't see any references to a similar problem. Any help would be
appreciated - I plan to checkout the code and see what's happening!
Here is the stack trace:
A problem occured while trying to service your request. Please contact
the support if this happens again.
Detailed information:
Error number 0 in 11: Uncaught exception
Wrapped Exception: Java heap space
com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception
Wrapped Exception: Java heap space
at
com.xpn.xwiki.web.ViewEditAction.execute(ViewEditAction.java:224)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
ocessor.java:421)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
226)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:173)
at
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodi
ngFilter.java:127)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:173)
at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilte
r.java:96)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:178)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAs
sociationValve.java:175)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.j
ava:74)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:1
48)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:86
9)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.proc
essConnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint
.java:527)
at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorker
Thread.java:112)
at java.lang.Thread.run(Thread.java:595)
Wrapped Exception:
java.lang.OutOfMemoryError: Java heap space
Thanks,
Nathan Smith
17 Oct
17 Oct
12:24 a.m.
New subject: [xwiki-users] Java Stack Tracing Saving 7MB Attachment
Get more RAM?
I've observed before, when the java heap becomes significantly larger
than the amount of real memory available, garbage collection can
begin to run so slowly that the JVM becomes unresponsive and
eventually dies. Was in a different environment and with (I think)
JDK 1.3, but the symptoms were very similar to what you are observing
here.
On 17 Oct 2006, at 00:11, Smith, Nathan wrote:
Dear xwiki-users,
We are getting a Java exception when saving a 7MB attachment. The
attachment appears to be attached properly, since it appears in the
attachment list and can be downloaded after the error. However,
after attaching four or five files the server becomes so
unresponsive that a restart is required. Configuration Info:
OS: Windows 2000 Server
RAM: 1GB
JDK: 1.5.0_8
App Server: JBoss 4.0.4
Database: MySQL 4.1.21
Note that JBoss is run with -Xmx 512M, and increasing that to -Xmx
1024M has no effect.
I've gone through the attachment documentation and mailing list
archives and didn't see any references to a similar problem. Any
help would be appreciated - I plan to checkout the code and see
what's happening!
Here is the stack trace:
A problem occured while trying to service your request. Please
contact the support if this happens again.
Detailed information:
Error number 0 in 11: Uncaught exception
Wrapped Exception: Java heap space
com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception
Wrapped Exception: Java heap space
at com.xpn.xwiki.web.ViewEditAction.execute
(ViewEditAction.java:224)
at
org.apache.struts.action.RequestProcessor.processActionPerform
(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process
(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process
(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doPost
(ActionServlet.java:415)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:
717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:
810)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173)
at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter
(SetCharacterEncodingFilter.java:127)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter
(ReplyHeaderFilter.java:96)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:178)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke
(SecurityAssociationValve.java:175)
at org.jboss.web.tomcat.security.JaccContextValve.invoke
(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol
$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:
664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run
(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)
Wrapped Exception:
java.lang.OutOfMemoryError: Java heap space
Thanks,
Nathan Smith
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wws
12:41 a.m.
New subject: [xwiki-users] Java Stack Tracing Saving 7MB Attachment
Hi,
Am Di, den 17.10.2006 schrieb Smith, Nathan um 0:11:
Bye
Frank
Dear xwiki-users,
We are getting a Java exception when saving a 7MB attachment. The
attachment appears to be attached properly, since it appears in the
attachment list and can be downloaded after the error. However, after
attaching four or five files the server becomes so unresponsive that a
restart is required. Configuration Info:
OS: Windows 2000 Server
RAM: 1GB
JDK: 1.5.0_8
App Server: JBoss 4.0.4
Database: MySQL 4.1.21
Note that JBoss is run with -Xmx 512M, and increasing that to -Xmx
1024M has no effect.
To set the max memory of a java VM to the maximum of the physical space
isn't a good idea. I'm not sure how windows react, but under linux the
machine is going under big pressure and works only with the swap daemon.
Last time I tried this our linux server has a short-time
load of >38 :-(.
To get an idea what the real problem is, isn't easy. Not in all
cases the error message is correct and heap space the problem.
If you have the possibility try more physical memory in your machine.
For a server 1 GB is not very much. If this doesn't help or
not possible you have to investigate more time in the analysis
of log messages of the garbage collector. You get more
information about the memory usage if you switch on GC logs
with -verbose:gc
12:49 a.m.
New subject: [xwiki-users] Java Stack Tracing Saving 7MB Attachment
To confirm and to get a little more info, you could try running with
-verbosegc to see how much time is really being spent in GC and how
the amount of available memory evolves.
On 16/10/06, Frank Haefemeier <frank(a)haefemeier.net> wrote:
Hi,
Am Di, den 17.10.2006 schrieb Smith, Nathan um 0:11:
Bye
Frank
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To unsubscribe: mailto:xwiki-users-unsubscribe@objectweb.org
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Dear xwiki-users,
We are getting a Java exception when saving a 7MB attachment. The
attachment appears to be attached properly, since it appears in the
attachment list and can be downloaded after the error. However, after
attaching four or five files the server becomes so unresponsive that a
restart is required. Configuration Info:
OS: Windows 2000 Server
RAM: 1GB
JDK: 1.5.0_8
App Server: JBoss 4.0.4
Database: MySQL 4.1.21
Note that JBoss is run with -Xmx 512M, and increasing that to -Xmx
1024M has no effect.
To set the max memory of a java VM to the maximum of the physical space
isn't a good idea. I'm not sure how windows react, but under linux the
machine is going under big pressure and works only with the swap daemon.
Last time I tried this our linux server has a short-time
load of >38 :-(.
To get an idea what the real problem is, isn't easy. Not in all
cases the error message is correct and heap space the problem.
If you have the possibility try more physical memory in your machine.
For a server 1 GB is not very much. If this doesn't help or
not possible you have to investigate more time in the analysis
of log messages of the garbage collector. You get more
information about the memory usage if you switch on GC logs
with -verbose:gc
6642
days inactive
6642
days old
3 comments
4 participants
participants (4)
-
Frank Haefemeier -
Jonathan Essex -
Robin Fernandes -
Smith, Nathan