On 2/11/23 08:17, Thad Humphries wrote:
Finally I profiled our Java utility with VisualVM, all on
my Mac Mini, and quickly found a leak from java.util.zip. This was a
surprise because we were not using java.util.zip anywhere, nor could I find
any reference to java.util.zip when I looked at the
A profiler has its place. VisualVM was vital in helping us solve a Java 8
memory leak last November (although it didn't involve Tomcat). We were
moving a large, long running system from old Solaris machines with
InformixDB to Intel hardware with SELinux and OracleDB. Part of the
system's workflow
I've tried profilers in the past, but I've never had much luck since
you need a super computer to run them. Human intelligence rules ..
read the code carefully, review it, step it with a debugger, and look
for memory leak patterns. Mine have mostly been static and non static
collections and
Naturally, I thought about this about 5 seconds after I clicked "Send":
It doesn't happen very often, and it usually happens *after* a
substantial portion of the heap has been idle for some time. Maybe
there's something in there that works somewhat like a disk defragmenter.
And when it gets a
It would be unusual for the OS to reclaim any of that memory from the
JVM process. Are you looking at OS heap usage, or "JVM heap" usage?
From your description above, it's tough to tell. The tool is called
WRKJVMJOB so presumably it knows what the heck a JVM is, so maybe you
were getting the
Shawn,
On 2/9/23 17:18, Shawn Heisey wrote:
On 2/9/23 12:54, Christopher Schultz wrote:
It would be unusual for the OS to reclaim any of that memory from the
JVM process. Are you looking at OS heap usage, or "JVM heap" usage?
From your description above, it's tough to tell. The tool is called
On 2/9/23 12:54, Christopher Schultz wrote:
It would be unusual for the OS to reclaim any of that memory from the
JVM process. Are you looking at OS heap usage, or "JVM heap" usage? From
your description above, it's tough to tell. The tool is called WRKJVMJOB
so presumably it knows what the
James,
On 2/7/23 20:35, James H. H. Lampert wrote:
Monitored the thing all day, taking the CPU usage (via a WRKACTJOB) and
the current heap size and heap-in-use (via option 5 of a WRKJVMJOB)
every 15 minutes.
Heap size was 4925.375M (out of a maximum of 5120M) at 08:45, and the OS
took heap
I've obtained some heap and CPU numbers, taking data at 15 minute
intervals, heap from WRKJVMJOB and CPU from WRKACTJOB. In two days of
this, I didn't witness any crashes; I did witness a near-miss, in which
heap-in-use hit 5011.938M (out of 5120).
In discussion with our webapp developer (to
Monitored the thing all day, taking the CPU usage (via a WRKACTJOB) and
the current heap size and heap-in-use (via option 5 of a WRKJVMJOB)
every 15 minutes.
Heap size was 4925.375M (out of a maximum of 5120M) at 08:45, and the OS
took heap away over the course of the day, until it was down
Thomas, James,
On 2/6/23 17:00, Thomas Hoffmann (Speed4Trade GmbH) wrote:
Hello James,
-Ursprüngliche Nachricht-
Von: James H. H. Lampert
Gesendet: Montag, 6. Februar 2023 18:18
An: Tomcat Users List
Betreff: Re: AW: Having trouble with Tomcat crashes. Interesting memory
numbers
Hi,
> Hello James,
>
>> -Ursprüngliche Nachricht-
>> Von: James H. H. Lampert
>> Gesendet: Montag, 6. Februar 2023 18:18
>> An: Tomcat Users List
>> Betreff: Re: AW: Having trouble with Tomcat crashes. Interesting memory
>> numbers in Manager
&
Hello James,
> -Ursprüngliche Nachricht-
> Von: James H. H. Lampert
> Gesendet: Montag, 6. Februar 2023 18:18
> An: Tomcat Users List
> Betreff: Re: AW: Having trouble with Tomcat crashes. Interesting memory
> numbers in Manager
>
> Thanks, Herr Hoffmann.
Thanks, Herr Hoffmann. Your questions were most helpful in determining
what information to gather and share. And thanks in advance to anybody
else who has any insights.
First, I will note that the seemingly non-sequitur nursery-survivor
numbers aren't just what we see during a crash; they're
Hello James,
> Von: James H. H. Lampert
> Gesendet: Samstag, 4. Februar 2023 01:39
> An: Tomcat Users List
> Betreff: Having trouble with Tomcat crashes. Interesting memory numbers in
> Manager
>
> One of our customers, one who basically pushes our Tomcat webapp to t
One of our customers, one who basically pushes our Tomcat webapp to the
limit, is having trouble with crashes.
Some interesting numbers are showing up in Server Status, in Manager:
nursery-allocate has initial 512M, total 1152M, maximum 1152M, used 587.05M.
nursery-survivor has initial 512M,
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Rejesh,
On 1/26/17 9:54 PM, Rajesh Cherukuri wrote:
> can some one help me on this , tomcat servers crashes if i use java
> 1.7 ir was running fine for more than an year
This sounds shockingly similar to this:
can some one help me on this , tomcat servers crashes if i use java 1.7 ir
was running fine for more than an year
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x7f1ff1018787, pid=13185, tid=139773910861568
#
# JRE version: 7.0_21-b11
# Java
Sure ,Will try this
On Oct 29, 2016 11:02 PM, "Christopher Schultz" <
ch...@christopherschultz.net> wrote:
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>
> Rajesh,
>
> On 10/28/16 6:41 AM, Rajesh Cherukuri wrote:
> > these severs has been migrated , i was told that it was working on
> >
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Rajesh,
On 10/28/16 6:41 AM, Rajesh Cherukuri wrote:
> these severs has been migrated , i was told that it was working on
> the source server
Okay. That gives us no information whatsoever that can help us help you.
We don't know what the
Chris
these severs has been migrated , i was told that it was working on the
source server
On Fri, Oct 21, 2016 at 8:10 PM, Christopher Schultz <
ch...@christopherschultz.net> wrote:
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>
> Rajesh,
>
> On 10/21/16 2:13 AM, Rajesh Cherukuri
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Rajesh,
On 10/21/16 2:13 AM, Rajesh Cherukuri wrote:
> can some one help me on this , tomcat servers crashes if i use java
> 1.7 , i have tried chaining this to java 1.6 and i am be to start
> the tomcat , issue is only when i use 1.7
>
> here is
hi
can some one help me on this , tomcat servers crashes if i use java 1.7 , i
have tried chaining this to java 1.6 and i am be to start the tomcat ,
issue is only when i use 1.7
here is the log when i use 1.7 after it crashes
Oct 21, 2016 7:37:28 AM
On Mar 27, 2014, at 2:20 PM, wangke keow...@hotmail.com wrote:
Date: Thu, 27 Mar 2014 12:20:28 -0400
From: ch...@christopherschultz.net
To: users@tomcat.apache.org
Subject: Re: Why Tomcat crashes
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Wangke,
On 3/27/14, 2:18 AM, wangke
Thanks very much
Subject: Re: Why Tomcat crashes
From: dmik...@gopivotal.com
Date: Fri, 28 Mar 2014 17:54:05 -0400
To: users@tomcat.apache.org
On Mar 27, 2014, at 2:20 PM, wangke keow...@hotmail.com wrote:
Date: Thu, 27 Mar 2014 12:20:28 -0400
From: ch
Hi All:
Recently I've encountered a very strange problem, I managed to crash tomcat
entirely with my application for a few times. Personally, I am quite
suspicious about the the settings of a shared library libswipl. What I did
according to
On Mar 27, 2014, at 2:18 AM, wangke keow...@hotmail.com wrote:
Hi All:
Recently I've encountered a very strange problem, I managed to crash tomcat
entirely
We need more specifics here. What exactly happens when it crashes? Has the
process exited? Do you see a JVM crash dump file?
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Wangke,
On 3/27/14, 2:18 AM, wangke wrote:
Hi All: Recently I've encountered a very strange problem, I managed
to crash tomcat entirely with my application for a few times.
Personally, I am quite suspicious about the the settings of a
shared
Date: Thu, 27 Mar 2014 12:20:28 -0400
From: ch...@christopherschultz.net
To: users@tomcat.apache.org
Subject: Re: Why Tomcat crashes
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Wangke,
On 3/27/14, 2:18 AM, wangke wrote:
Hi All: Recently I've encountered a very strange problem
On Mar 27, 2014, at 2:10 PM, wangke keow...@hotmail.com wrote:
Subject: Re: Why Tomcat crashes
From: dmik...@gopivotal.com
Date: Thu, 27 Mar 2014 07:24:38 -0400
To: users@tomcat.apache.org
On Mar 27, 2014, at 2:18 AM, wangke keow...@hotmail.com wrote:
Hi All
On Mar 27, 2014, at 3:01 PM, Daniel Mikusa dmik...@gopivotal.com wrote:
On Mar 27, 2014, at 2:10 PM, wangke keow...@hotmail.com wrote:
Subject: Re: Why Tomcat crashes
From: dmik...@gopivotal.com
Date: Thu, 27 Mar 2014 07:24:38 -0400
To: users@tomcat.apache.org
On Mar 27, 2014, at 2
Chris,
You need to have a key in your keystore with the alias tomcat as well.
If you have been following
http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Configuration,
you have either missed or misinterpreted a step.
I actually followed the document here:
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Justin,
On 12/13/11 8:35 AM, Justin Larose wrote:
I actually followed the document here:
http://tomcat.apache.org/tomcat-6.0-doc/ssl-howto.html because I am
using Tomcat 6.
Okay. You just hadn't mentioned that (version) before.
I also did
: Christopher Schultz ch...@christopherschultz.net
To: Tomcat Users List users@tomcat.apache.org
Date: 12/13/2011 03:08 PM
Subject:Re: Tomcat crashes after startup
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Justin,
On 12/13/11 8:35 AM, Justin Larose wrote:
I actually followed
Group,
Can anyone help me with this error below from the catalina.log?
I have attached my server.xml as well. I have done some searches on the
internet and cannot find much on this error.
SEVERE: Error initializing endpoint
java.io.IOException:
On 12/12/2011 20:20, Justin Larose wrote:
Group,
Can anyone help me with this error below from the catalina.log?
I have attached my server.xml as well. I have done some searches on the
internet and cannot find much on this error.
SEVERE:
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Justin,
Mark already answered your question, but ...
On 12/12/11 3:20 PM, Justin Larose wrote:
Connector connectionTimeout=2 port=18080
protocol=HTTP/1.1 redirectPort=8443 server=Unknown Web
Server/1.0/
:(
Really? Masking the server name?
=true xmlNamespaceAware=false xmlValidation=false/
/Engine
/Service
/Server
Thanks,
Justin
From: Mark Thomas ma...@apache.org
To: Tomcat Users List users@tomcat.apache.org
Date: 12/12/2011 03:29 PM
Subject:Re: Tomcat crashes after startup
On 12/12/2011 20:20, Justin
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Justin,
On 12/12/11 3:49 PM, Justin Larose wrote:
I edited the connector with the information for the new certificate
I just installed (not the old self signed one) and now I am seeing
this error:
[snip]
java.io.IOException: Alias name
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Nishant,
Mailing the list is fine: there's no need to mail me separately.
On 12/6/2009 11:19 PM, Hadole, Nishant IN BOM SISL wrote:
Tomcat crashes means, the free memory starts declining dramatically
to zero, and server stops responding to new
Dear Chris,
Tomcat crashes means, the free memory starts declining dramatically to zero,
and server stops responding to new requests. I am sure with little
modifications, this can be handled in code itself, and this is not a concern at
all.
I am more interested in knowing whether there exists
I am using Apache HTTP Server 2.0.61, Apache Tomcat Server 6.0.14.0 and mod_jk
2.0.46 (AJP V 1.3).
Scenario - Client call for heavy Post request from JSP. Tomcat receives the
request and starts processing. Before receiving the response, client closes JSP
window. Thus there is no one to
On 04.12.2009 10:29, Hadole, Nishant IN BOM SISL wrote:
I am using Apache HTTP Server 2.0.61, Apache Tomcat Server 6.0.14.0 and mod_jk
2.0.46 (AJP V 1.3).
mod_jk 2.0.46 does not exist.
Scenario - Client call for heavy Post request from JSP. Tomcat receives the
request and starts
...@siemens.com
-Original Message-
From: Rainer Jung [mailto:rainer.j...@kippdata.de]
Sent: Friday, 04 December, 2009 03:14 PM
To: Tomcat Users List
Cc: Hadole, Nishant IN BOM SISL
Subject: Re: Tomcat Crashes out of continuous servicing of stuck request
On 04.12.2009 10:29, Hadole, Nishant IN BOM
...
Without trying to send something back to the client, there is
no way telling the client closed the window (or pressed
reload or switched to another URL).
I would expect the socket to be closed, which can be detected at the
server side. The exceptions I can think of are the client
]
Sent: vrijdag 04 december 2009 11:06
To: 'Rainer Jung'; Tomcat Users List
Subject: RE: Tomcat Crashes out of continuous servicing of
stuck request
Dear Rainer,
Thanks for explanation. In this particular case, when client
press a button on JSP, it initiates a Database search
operation
On 04.12.2009 11:41, Looijmans, Mike wrote:
...
Without trying to send something back to the client, there is
no way telling the client closed the window (or pressed
reload or switched to another URL).
I would expect the socket to be closed, which can be detected at the
server side. The
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Nishant,
On 12/4/2009 4:29 AM, Hadole, Nishant IN BOM SISL wrote:
Tomcat continues processing request indefinitely, causing loss of
free heap memory and eventually crashes.
When you say crashes, what exactly to you mean? OOME? JVM failure?
When
Hi,
I am using tomcat 6 and the server crashes all of a sudden creating a core
dump file.
I have no clue why this is happening.
Can you please suggest on what all details I need to provide so that some
one can help resolve the issue.
Thanks
Kam
about when Tomcat crashes ? (shortly before,
usually).
-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
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Kam,
On 6/29/2009 2:39 PM, kam tak wrote:
I am using tomcat 6 and the server crashes all of a sudden creating a core
dump file.
Core dump == JVM crash. This is unlikely to be Tomcat's fault. When the
JVM dumps core, it should leave-behind a crash
looks like it is a VM thread that is crashing, not a tomcat thread.what
are your command line options to the JVM?
could be a GC bug,
Filip
daniel steel wrote:
all,
i am not sure if this a bug or OS problem or our install problem (this is
the first ever crash). at one of our new installs
filip,
JVm has the default options that is shipped out with tomcat distribution.
the crash happens in the initial testing even before we apply our custom
production changes.
thanks
bharat
Filip Hanik - Dev Lists [EMAIL PROTECTED] wrote: looks like it is a VM
thread that is
Vikram Godse [EMAIL PROTECTED] wrote:
Hi,
My CATALINA_OPTS parameter has the following values i have 4gb ram on
my server
CATALINA_OPTS=-server -XX:MaxPermSize=512m -Xms1024m -Xmx1024m
This is what i see in the tomcat manager server info.
Max threads: 200 Min spare threads: 4 Max spare
Hi,
I am running Apache Tomcat/5.5.12 with JVM 1.5.0-b64.My O/S is RHEL4.0
ES.My hardware configuration is as follows
Intel Xeon 3.0Ghz Dual CPU
RAM 4gb
I am running an JSP and Servlets based application with connectivity
to MySQL 5 for database access.
I am facing a problem, when my user
: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vikram
Godse
Sent: Tuesday, March 07, 2006 8:22 AM
To: Tomcat Users List
Subject: Tomcat Crashes after 1000 sessions.
Hi,
I am running Apache Tomcat/5.5.12 with JVM 1.5.0-b64.My O/S is RHEL4.0
ES.My hardware configuration is as follows
Intel
Have you checked settings like maxThreads in your server.xml file?
If you have something like 1000 here... you know ;)
Cheers,
Danny
Vikram Godse wrote:
skipped
actually accessing the website the number of sessions are atleast
800-900.
Can anybody tell me where the problem lies? i have been
Vikram Godse wrote:
I am facing a problem, when my user sessions(in tomcat) go beyond 1000
the tomcat server stop serving requests and just displays a blank
page.What i have observed that, though there are only 150 users
actually accessing the website the number of sessions are atleast
800-900.
] [mailto:[EMAIL PROTECTED] On Behalf Of Vikram
Godse
Sent: Tuesday, March 07, 2006 8:22 AM
To: Tomcat Users List
Subject: Tomcat Crashes after 1000 sessions.
Hi,
I am running Apache Tomcat/5.5.12 with JVM 1.5.0-b64.My O/S is RHEL4.0
ES.My hardware configuration is as follows Intel Xeon 3.0Ghz Dual CPU
:[EMAIL PROTECTED] On Behalf Of Vikram
Godse
Sent: Tuesday, March 07, 2006 8:22 AM
To: Tomcat Users List
Subject: Tomcat Crashes after 1000 sessions.
Hi,
I am running Apache Tomcat/5.5.12 with JVM 1.5.0-b64.My O/S is RHEL4.0
ES.My hardware configuration is as follows Intel Xeon 3.0Ghz Dual
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vikram
Godse
Sent: Tuesday, March 07, 2006 1:03 PM
To: Tomcat Users List
Subject: Re: Tomcat Crashes after 1000 sessions.
Hi,
My CATALINA_OPTS parameter has the following values i have 4gb ram on my
server
properly.
Jerald Sheets
Systems Administrator
The Weather Channel Interactive
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vikram
Godse
Sent: Tuesday, March 07, 2006 8:22 AM
To: Tomcat Users List
Subject: Tomcat Crashes after 1000 sessions.
Hi,
I am
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