I've tried each of the aforementioned GC options individually with the
following other parameters:
JAVA_OPTS=GC Param -Xms368m -Xmx512m -XX:MaxPermSize=128m -XX:+PrintGC
-XX:+PrintGCDetails -Djava.awt.headless=true -Dfile.encoding=UTF-8
The *only option* that did not cause the startup process to
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
The *only option* that did not cause the startup process to
halt indefinitely on startup was the Serial GC option.
This is really
A couple of other findings:
- Tomcat 5.5.28 out-of-the-box with its default webapps has no problem
starting with the default (parallel) gc
- As soon as I remove the default webapps, add ours, and modify the
context.xml file to provide it a DataSource, Tomcat hangs. We're definitely
loading a lot
Hi,
I have the same problem using tomcat 6 and jdk 6, do you find a workaround
?
Regards!
Mark Thomas wrote:
Bradley Wagner wrote:
Ok, I'll try that next. Two things:
- Did some searching, but couldn't find how to determine the default GC
method for my Java version
Hmm, I'm going to try again with more explicit PermGen space as it seems to
be out of it.
- Bradley
On Thu, Sep 3, 2009 at 3:51 PM, Bradley Wagner
bradley.wag...@hannonhill.com wrote:
And again in a new place on subsequent attempt. I've attached the logging
this time because the amount of
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
Hmm, I'm going to try again with more explicit PermGen space as it
seems to be out of it.
Try it, but I'd be surprised if it had any
This is odd. After setting permgen to 128m with -XX:MaxPermSize=128m I'm
seeing it hang again. What's odd is that the PermGen space appears to be
totally used up at 26MB and not expanding, unless I'm reading it wrong.
Heap after GC invocations=10 (full 0):
PSYoungGen total 47296K, used 2831K
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
What's odd is that the PermGen space appears to be totally used
up at 26MB and not expanding, unless I'm reading it wrong.
You're
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
And again in a new place on subsequent attempt.
There's nothing unusual that I can see in the traces, so it looks like you will
have
Ok, I'll try that next. Two things:
- Did some searching, but couldn't find how to determine the default GC
method for my Java version
- Would you recommend I move this problem elsewhere, given that this is
likely not related to Tomcat at all. I don't want to spam this list.
Thanks,
Bradley
On
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
- Did some searching, but couldn't find how to determine the default GC
method for my Java version
You appear to be running the
Bradley Wagner wrote:
Ok, I'll try that next. Two things:
- Did some searching, but couldn't find how to determine the default GC
method for my Java version
http://blogs.sun.com/watt/resource/jvm-options-list.html is a useful
reference
- Would you recommend I move this problem elsewhere,
I noticed that you mention that you are using the community version of the
Java runtime environment which i think is what you get when you do an
apt-get.
I have never honestly been able to use this version of the JVM successfully.
I had a similar problem recently where i was running an
Sorry, are you saying that the JRE I'm getting when doing apt-get install
sun-java6-jdk is not actually a Sun certified version and that I should be
downloading it directly from their website instead?
On Thu, Sep 3, 2009 at 3:50 AM, Ziggy zigg...@gmail.com wrote:
I noticed that you mention that
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
are you saying that the JRE I'm getting when doing apt-get
install sun-java6-jdk is not actually a Sun certified version
and that I
Yea, I don't think it's the Open JDK, though that was an option. java
-version gives:
java version 1.6.0_14
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Server VM (build 14.0-b16, mixed mode)
- Bradley
On Thu, Sep 3, 2009 at 10:19 AM, Ziggy zigg...@gmail.com wrote:
It provides you the version of installed java.
On Thu, Sep 3, 2009 at 10:19 AM, Ziggy zigg...@gmail.com wrote:
What do you get when you run java -version?
I think the linux distributions include the open jdk version see
http://openjdk.java.net/
On Thu, Sep 3, 2009 at 3:13 PM, Caldarale,
Ok my mistake. Thats the official SUN version.
The linux distribution i use downloads the openjdk version and i had to
manually download the official one to stop the memory errors.
On Thu, Sep 3, 2009 at 3:29 PM, ramzi khlil ramzi.atv...@gmail.com wrote:
It provides you the version of
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
java version 1.6.0_14
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Server VM (build 14.0-b16, mixed mode)
What do you get when you run java -version?
I think the linux distributions include the open jdk version see
http://openjdk.java.net/
On Thu, Sep 3, 2009 at 3:13 PM, Caldarale, Charles R
chuck.caldar...@unisys.com wrote:
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Is JConsole something that comes bundled with the JRE or JDK or a separate
application. I have limited ability to install other things on this machine
because it belongs to a client.
Thanks,
Bradley
On Thu, Sep 3, 2009 at 10:32 AM, Caldarale, Charles R
chuck.caldar...@unisys.com wrote:
From:
Probably unrelated, but... when setting JAVA_HOME for Tomcat in Ubuntu
what's the difference between:
- /usr/lib/jvm/java-6-sun, and
- /usr/lib/jvm/java-6-sun/jre
It doesn't seem to have any effect on my problem, but does it make a
difference? I believe I have the full JDK installed so maybe the
Bradley Wagner wrote:
Probably unrelated, but... when setting JAVA_HOME for Tomcat in Ubuntu
what's the difference between:
- /usr/lib/jvm/java-6-sun, and
- /usr/lib/jvm/java-6-sun/jre
It doesn't seem to have any effect on my problem, but does it make a
difference? I believe I have the
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
Is JConsole something that comes bundled with the JRE or JDK or a
separate application.
It's part of the JDK, but not the JRE.
-
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
Probably unrelated, but... when setting JAVA_HOME for Tomcat in Ubuntu
what's the difference between:
- /usr/lib/jvm/java-6-sun, and
Hmm, so JConsole:
http://java.sun.com/developer/technicalArticles/J2SE/jconsole.html appears
to need a GUI which I don't have in this case.
Should I just start switching through the different GC types and see if it
makes a difference?
On Thu, Sep 3, 2009 at 11:02 AM, Caldarale, Charles R
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
Hmm, so JConsole appears to need a GUI which I don't have in this case.
You can run it remotely by setting the appropriate
Ok, I've tried to get JConsole working but have been unsuccessful. I've set
it up to connect remotely using JMX over port 8081. The program is starting
and I've configured the JMX passwords.
However, when I try to connect to the hung program using username:
controlRole and my password: password
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
Maybe it can't connect when it's hung.
Quite possible; GC stops all threads, so the JMX agent may well be suspended.
You might want
Ok, hung in a different place, but hung nonetheless with all of that logging
enabled:
Here is the result:
2009-09-03 15:47:11,328 INFO [SettingsFactory] : Default entity-mode: pojo
2009-09-03 15:47:11,328 INFO [SettingsFactory] : Named query checking :
enabled
2009-09-03 15:47:11,355 INFO
And again in a new place on subsequent attempt. I've attached the logging
this time because the amount of logging between the last Tomcat line and the
GC line was significant!
- Bradley
On Thu, Sep 3, 2009 at 1:49 PM, Caldarale, Charles R
chuck.caldar...@unisys.com wrote:
From: Bradley Wagner
Thanks for the clarification on the initial heap size. I've set both Xms and
Xmx to 512m for the following test.
I was able to reproduce the problem immediately with:
- Xms and Xmx both set to 512m
- Java 1.6 with no JPDA running
- XX:+PrintGCDetails enabled
I've attached the thread dump which I
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
I've also attached the catalina.out log which shows the GC
basically freezing.
Unfortunately, that log was stripped; can you post it
Here's the last 100 lines of it. That line with only 3 letters is actually
what is in the file. It's hanging mid-GC call.
2009-09-02 13:58:05,306 INFO [TableMetadata] : table found:
hhtest.cxml_recyclerecord
2009-09-02 13:58:05,306 INFO [TableMetadata] : columns: [id,
parentfolderid,
Bradley Wagner wrote:
Any thoughts on which GC parameters I should change.
See what the default collector is for your platform and switch to s
different one.
Mark
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Hash: SHA1
Bradley,
On 8/31/2009 5:27 PM, Bradley Wagner wrote:
The three thread dumps were from three different occurrences of the same
problem and three consecutive startup attempts.
With each occurrence, the startup process hangs in the middle of
2009/9/1 Christopher Schultz ch...@christopherschultz.net
Hmm. Do you trust your hardware?
[...]
How much physical memory does your machine have? How much swap space?
Try running badblocks on your swap partition. Try running memtest86+ on
your hardware (if it's x86... you didn't say).
The
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Peter,
On 9/1/2009 11:18 AM, Peter Crowther wrote:
2009/9/1 Christopher Schultz ch...@christopherschultz.net
Hmm. Do you trust your hardware?
[...]
How much physical memory does your machine have? How much swap space?
Try running badblocks
Ok, I have some information to add here. I was able to get thread dumps with
jstack pid (very handy!) because kill -3 wouldn't work on a hung
process.
I've listed 3 consecutive tests that I run and the thread is blocked at the
time the process is hung.
Test 1
Thread 21348: (state = BLOCKED)
-
Bradley Wagner wrote:
Ok, I have some information to add here. I was able to get thread dumps with
jstack pid (very handy!) because kill -3 wouldn't work on a hung
process.
I've listed 3 consecutive tests that I run and the thread is blocked at the
time the process is hung.
That isn't the
Mark,
Sorry, I should have mentioned this before, but in all cases I tried the
thread dumps 2-3 times at least 30s apart and none of the threads have
progressed at all.
- Bradley
On Mon, Aug 31, 2009 at 3:52 PM, Mark Thomas ma...@apache.org wrote:
Bradley Wagner wrote:
Ok, I have some
Bradley Wagner wrote:
Mark,
Sorry, I should have mentioned this before, but in all cases I tried the
thread dumps 2-3 times at least 30s apart and none of the threads have
progressed at all.
Hmm. That smells like a JVM issue to me, particularly if it goes away
when you use JPDA.
Things to
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Hash: SHA1
Bradley,
On 8/31/2009 4:02 PM, Bradley Wagner wrote:
Sorry, I should have mentioned this before, but in all cases I tried the
thread dumps 2-3 times at least 30s apart and none of the threads have
progressed at all.
I agree with Mark: the three
2009/8/31 Christopher Schultz ch...@christopherschultz.net
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Hash: SHA1
Bradley,
On 8/31/2009 4:02 PM, Bradley Wagner wrote:
Sorry, I should have mentioned this before, but in all cases I tried the
thread dumps 2-3 times at least 30s apart and none of
- use a 1.6 JVM
Tried with Sun 1.6 JVM. Same problems. Not the same exact stack traces but
for example:
Thread 24427: (state = BLOCKED)
- java.lang.String.toCharArray() @bci=4, line=2725 (Compiled frame)
- java.beans.Introspector.decapitalize(java.lang.String) @bci=46, line=252
(Compiled
I agree with Mark: the three threads you showed were different
(different ids), and showing different call stacks. Are you saying that
each thread dump you took represents multiple thread dumps where that
particular thread didn't progress /at all/ over your multi-dump sample?
The three
The other interesting point is that all of those are hung in places where
they would naturally be allocating an object or have very recently allocated
an object, and the JVM *might* in theory be growing the heap. Bradley, are
your initial and maximum heap sizes identical (I suspect not from
Hello,
This indeed sounds like you have problems with one of the spaces,
please add following option to the JAVA_OPTS (or whatever you are
using) to seubmit jvm parameters:
-XX:+PrintGCDetails
And, no tomcat's initial heap size don't default to 64Mb. The JVM
allocateds a heap dependent on your
From: Bradley Wagner [mailto:bradley.wag...@hannonhill.com]
Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
in Tomcat 5.5 on Ubuntu 7
So, while it's not hanging in the same place every time, it's
definitely hanging every time.
Try running JConsole against the Tomcat
2009/8/28 Bradley Wagner bradley.wag...@hannonhill.com
I have a Spring/Hibernate app running in Tomcat 5.5.20 that we've tested in
many environments that is currently faltering when running in a Ubuntu 7
VM.
Basically on startup, frequently, the startup process will halt when trying
to read
I have a Spring/Hibernate app running in Tomcat 5.5.20 that we've tested in
many environments that is currently faltering when running in a Ubuntu 7 VM.
Basically on startup, frequently, the startup process will halt when trying
to read Hibernate's HBM files and in various other places in startup
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