RE: FW: Re: tomcat 6.0.41 heap size issue

2016-01-29 Thread Akbar Thanakalacheruvu 
Take heap dump using jvisualvm and analyze the objects that stayed in the 
memory. You might get a rootcause to your problem. 
What is the total RAM of your machine? How much you allocated to Tomcat? 
Is any of your users running an application which requires huge amount of heap 
memory? Either tune that particular application or ask your users to try 
minimize/avoid usage of that application.

-Akbar
-Original Message-
From: Mark Thomas [mailto:ma...@apache.org] 
Sent: Friday, January 29, 2016 7:16 AM
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: FW: Re: tomcat 6.0.41 heap size issue

On 29/01/2016 11:07, Guo, Denny wrote:
> Yes, we do have this option on for MaxPermSize, it is set to 512M.
> 
> If that is related to PermSize, should we get this message " 
> java.lang.OutOfMemoryError: PermGen space". However we never see this message 
> in the log.

Use a profiler. Find out what is using all that memory.

Mark


> 
> -Original Message-
> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
> Sent: Thursday, January 28, 2016 11:43 PM
> To: Tomcat Users List
> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
> 
> Ok What's the size of the war file you have deployed to Tomcat?
> 
> I suspect the problem is with PermSize (The class loading part of JVM) than 
> Heap though the error points out Java Heap.
> 
> Pls set the PermSize with -XX:PermSize and -XX:MaxPermSize options and test.
> 
> Thanks,
> Madhu
> 
> On Fri, Jan 29, 2016 at 8:53 AM, Guo, Denny <d...@livingstonintl.com> wrote:
> 
>> Thanks for quick response. Here is the information.
>>
>> java version "1.6.0_45"
>> Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) 
>> 64-Bit Server VM (build 20.45-b01, mixed mode)
>>
>>
>> -Original Message-----
>> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
>> Sent: Thursday, January 28, 2016 10:15 PM
>> To: Tomcat Users List
>> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
>>
>> Hi Denny,
>>
>> Which JDK you are using Oracle JDK/JRockit and which version.
>>
>> Some memory tuning options depend on JDK product used.
>>
>> Thanks,
>> Madhu
>>
>> On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com>
>> wrote:
>>
>>>
>>> Hi All,
>>>
>>> Looking for help on tomcat heap size issue.
>>>
>>> We are see below GC activity before tomcat reports the heap size error.
>>> Please see below message. However, we assign -Xmx=24G to the heap 
>>> size, why tomcat reports error even not reach 20G heap size usage ?
>>> Can someone please help. How the tomcat decides how much memory 
>>> allocate to young/old generation?
>>>
>>> We are running tomcat 6.0.41 on red hat linux as per our vendor.
>>>
>>> Thanks,
>>> Denny
>>>
>>> 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
>>> user=26.77 sys=0.01, real=26.76 secs]
>>> 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
>>> user=26.51 sys=0.01, real=26.50 secs]
>>> 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
>>> user=26.70 sys=0.01, real=26.70 secs]
>>> 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times:
>>> user=26.73 sys=0.01, real=26.72 secs]
>>> 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times:
>>> user=26.75 sys=0.00, real=26.75 secs]
>>> 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K-

RE: FW: Re: tomcat 6.0.41 heap size issue

2016-01-29 Thread Guo, Denny 
We have total 64G physical memory on that server.  We are running 2 tomcat 
instances on that server, and each one has 24G heap size and 512M PermSize. 

We capture the memory dump when we see the heap size message in the log, we 
send dump to developer, however, they could not pinpoint what is the cause. 

The interesting thing is before it really reaches 24G heap size, sometime even 
just 16G,  we actually see the complain about out of space issue. 

-Original Message-
From: Akbar Thanakalacheruvu [mailto:akb...@sumtotalsystems.com] 
Sent: Friday, January 29, 2016 8:55 AM
To: Tomcat Users List
Subject: RE: FW: Re: tomcat 6.0.41 heap size issue

Take heap dump using jvisualvm and analyze the objects that stayed in the 
memory. You might get a rootcause to your problem. 
What is the total RAM of your machine? How much you allocated to Tomcat? 
Is any of your users running an application which requires huge amount of heap 
memory? Either tune that particular application or ask your users to try 
minimize/avoid usage of that application.

-Akbar
-Original Message-
From: Mark Thomas [mailto:ma...@apache.org]
Sent: Friday, January 29, 2016 7:16 AM
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: FW: Re: tomcat 6.0.41 heap size issue

On 29/01/2016 11:07, Guo, Denny wrote:
> Yes, we do have this option on for MaxPermSize, it is set to 512M.
> 
> If that is related to PermSize, should we get this message " 
> java.lang.OutOfMemoryError: PermGen space". However we never see this message 
> in the log.

Use a profiler. Find out what is using all that memory.

Mark


> 
> -Original Message-
> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
> Sent: Thursday, January 28, 2016 11:43 PM
> To: Tomcat Users List
> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
> 
> Ok What's the size of the war file you have deployed to Tomcat?
> 
> I suspect the problem is with PermSize (The class loading part of JVM) than 
> Heap though the error points out Java Heap.
> 
> Pls set the PermSize with -XX:PermSize and -XX:MaxPermSize options and test.
> 
> Thanks,
> Madhu
> 
> On Fri, Jan 29, 2016 at 8:53 AM, Guo, Denny <d...@livingstonintl.com> wrote:
> 
>> Thanks for quick response. Here is the information.
>>
>> java version "1.6.0_45"
>> Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) 
>> 64-Bit Server VM (build 20.45-b01, mixed mode)
>>
>>
>> -Original Message-----
>> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
>> Sent: Thursday, January 28, 2016 10:15 PM
>> To: Tomcat Users List
>> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
>>
>> Hi Denny,
>>
>> Which JDK you are using Oracle JDK/JRockit and which version.
>>
>> Some memory tuning options depend on JDK product used.
>>
>> Thanks,
>> Madhu
>>
>> On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com>
>> wrote:
>>
>>>
>>> Hi All,
>>>
>>> Looking for help on tomcat heap size issue.
>>>
>>> We are see below GC activity before tomcat reports the heap size error.
>>> Please see below message. However, we assign -Xmx=24G to the heap 
>>> size, why tomcat reports error even not reach 20G heap size usage ?
>>> Can someone please help. How the tomcat decides how much memory 
>>> allocate to young/old generation?
>>>
>>> We are running tomcat 6.0.41 on red hat linux as per our vendor.
>>>
>>> Thanks,
>>> Denny
>>>
>>> 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
>>> user=26.77 sys=0.01, real=26.76 secs]
>>> 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
>>> user=26.51 sys=0.01, real=26.50 secs]
>>> 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
>>> user=26.70 sys=0.01, real=26.70 secs]
>>> 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777

Re: FW: Re: tomcat 6.0.41 heap size issue

2016-01-29 Thread Mark Thomas 
On 29/01/2016 11:07, Guo, Denny wrote:
> Yes, we do have this option on for MaxPermSize, it is set to 512M.
> 
> If that is related to PermSize, should we get this message " 
> java.lang.OutOfMemoryError: PermGen space". However we never see this message 
> in the log.

Use a profiler. Find out what is using all that memory.

Mark


> 
> -Original Message-
> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
> Sent: Thursday, January 28, 2016 11:43 PM
> To: Tomcat Users List
> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
> 
> Ok What's the size of the war file you have deployed to Tomcat?
> 
> I suspect the problem is with PermSize (The class loading part of JVM) than 
> Heap though the error points out Java Heap.
> 
> Pls set the PermSize with -XX:PermSize and -XX:MaxPermSize options and test.
> 
> Thanks,
> Madhu
> 
> On Fri, Jan 29, 2016 at 8:53 AM, Guo, Denny <d...@livingstonintl.com> wrote:
> 
>> Thanks for quick response. Here is the information.
>>
>> java version "1.6.0_45"
>> Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM)
>> 64-Bit Server VM (build 20.45-b01, mixed mode)
>>
>>
>> -Original Message-----
>> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
>> Sent: Thursday, January 28, 2016 10:15 PM
>> To: Tomcat Users List
>> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
>>
>> Hi Denny,
>>
>> Which JDK you are using Oracle JDK/JRockit and which version.
>>
>> Some memory tuning options depend on JDK product used.
>>
>> Thanks,
>> Madhu
>>
>> On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com>
>> wrote:
>>
>>>
>>> Hi All,
>>>
>>> Looking for help on tomcat heap size issue.
>>>
>>> We are see below GC activity before tomcat reports the heap size error.
>>> Please see below message. However, we assign -Xmx=24G to the heap
>>> size, why tomcat reports error even not reach 20G heap size usage ?
>>> Can someone please help. How the tomcat decides how much memory
>>> allocate to young/old generation?
>>>
>>> We are running tomcat 6.0.41 on red hat linux as per our vendor.
>>>
>>> Thanks,
>>> Denny
>>>
>>> 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
>>> user=26.77 sys=0.01, real=26.76 secs]
>>> 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
>>> user=26.51 sys=0.01, real=26.50 secs]
>>> 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
>>> user=26.70 sys=0.01, real=26.70 secs]
>>> 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times:
>>> user=26.73 sys=0.01, real=26.72 secs]
>>> 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times:
>>> user=26.75 sys=0.00, real=26.75 secs]
>>> 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777215K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 26.7899470 secs] [Times:
>>> user=26.80 sys=0.00, real=26.79 secs]
>>> 2016-01-28T21:23:36.425-0500: [Full GC [PSYoungGen:
>>> 761K->761K(2880K)]
>>> [PSOldGen: 16777215K->16777216K(16777216K)]
>>> 16777977K->16777977K(16780096K)
>>> [PSPermGen: 222628K-222628K(222912K)], 43.0072820 secs] [Times:
>>> user=43.01 sys=0.02, real=43.00 secs]
>>> 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
>>> [PSOldGen: 16777216K->632811K(4342144

RE: FW: Re: tomcat 6.0.41 heap size issue

2016-01-29 Thread Guo, Denny 
Yes, we do have this option on for MaxPermSize, it is set to 512M.

If that is related to PermSize, should we get this message " 
java.lang.OutOfMemoryError: PermGen space". However we never see this message 
in the log.

-Original Message-
From: kidambi madhu [mailto:madhu.kida...@gmail.com]
Sent: Thursday, January 28, 2016 11:43 PM
To: Tomcat Users List
Subject: Re: FW: Re: tomcat 6.0.41 heap size issue

Ok What's the size of the war file you have deployed to Tomcat?

I suspect the problem is with PermSize (The class loading part of JVM) than 
Heap though the error points out Java Heap.

Pls set the PermSize with -XX:PermSize and -XX:MaxPermSize options and test.

Thanks,
Madhu

On Fri, Jan 29, 2016 at 8:53 AM, Guo, Denny <d...@livingstonintl.com> wrote:

> Thanks for quick response. Here is the information.
>
> java version "1.6.0_45"
> Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM)
> 64-Bit Server VM (build 20.45-b01, mixed mode)
>
>
> -Original Message-
> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
> Sent: Thursday, January 28, 2016 10:15 PM
> To: Tomcat Users List
> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
>
> Hi Denny,
>
> Which JDK you are using Oracle JDK/JRockit and which version.
>
> Some memory tuning options depend on JDK product used.
>
> Thanks,
> Madhu
>
> On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com>
> wrote:
>
> >
> > Hi All,
> >
> > Looking for help on tomcat heap size issue.
> >
> > We are see below GC activity before tomcat reports the heap size error.
> > Please see below message. However, we assign -Xmx=24G to the heap
> > size, why tomcat reports error even not reach 20G heap size usage ?
> > Can someone please help. How the tomcat decides how much memory
> > allocate to young/old generation?
> >
> > We are running tomcat 6.0.41 on red hat linux as per our vendor.
> >
> > Thanks,
> > Denny
> >
> > 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
> > user=26.77 sys=0.01, real=26.76 secs]
> > 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
> > user=26.51 sys=0.01, real=26.50 secs]
> > 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
> > user=26.70 sys=0.01, real=26.70 secs]
> > 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times:
> > user=26.73 sys=0.01, real=26.72 secs]
> > 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times:
> > user=26.75 sys=0.00, real=26.75 secs]
> > 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7899470 secs] [Times:
> > user=26.80 sys=0.00, real=26.79 secs]
> > 2016-01-28T21:23:36.425-0500: [Full GC [PSYoungGen:
> > 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777216K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 43.0072820 secs] [Times:
> > user=43.01 sys=0.02, real=43.00 secs]
> > 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> > [PSOldGen: 16777216K->632811K(4342144K)]
> > 16777977K->632811K(4345024K)
> > [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> > user=4.96 sys=0.04, real=5.00 secs]
> > 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> > [PSOldGen: 16777216K->632811K(4342144K)]
> > 16777977K->632811K(4345024K)
> > [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> > user=4.96 sys=0.04, real=5.00 secs] Exception in thread "Low Memor

Re: FW: Re: tomcat 6.0.41 heap size issue

2016-01-28 Thread kidambi madhu 
Ok What's the size of the war file you have deployed to Tomcat?

I suspect the problem is with PermSize (The class loading part of JVM) than
Heap though the error points out Java Heap.

Pls set the PermSize with -XX:PermSize and -XX:MaxPermSize options and test.

Thanks,
Madhu

On Fri, Jan 29, 2016 at 8:53 AM, Guo, Denny <d...@livingstonintl.com> wrote:

> Thanks for quick response. Here is the information.
>
> java version "1.6.0_45"
> Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
> Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
>
>
> -Original Message-
> From: kidambi madhu [mailto:madhu.kida...@gmail.com]
> Sent: Thursday, January 28, 2016 10:15 PM
> To: Tomcat Users List
> Subject: Re: FW: Re: tomcat 6.0.41 heap size issue
>
> Hi Denny,
>
> Which JDK you are using Oracle JDK/JRockit and which version.
>
> Some memory tuning options depend on JDK product used.
>
> Thanks,
> Madhu
>
> On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com>
> wrote:
>
> >
> > Hi All,
> >
> > Looking for help on tomcat heap size issue.
> >
> > We are see below GC activity before tomcat reports the heap size error.
> > Please see below message. However, we assign -Xmx=24G to the heap
> > size, why tomcat reports error even not reach 20G heap size usage ?
> > Can someone please help. How the tomcat decides how much memory
> > allocate to young/old generation?
> >
> > We are running tomcat 6.0.41 on red hat linux as per our vendor.
> >
> > Thanks,
> > Denny
> >
> > 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
> > user=26.77 sys=0.01, real=26.76 secs]
> > 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
> > user=26.51 sys=0.01, real=26.50 secs]
> > 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
> > user=26.70 sys=0.01, real=26.70 secs]
> > 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times:
> > user=26.73 sys=0.01, real=26.72 secs]
> > 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times:
> > user=26.75 sys=0.00, real=26.75 secs]
> > 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777215K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 26.7899470 secs] [Times:
> > user=26.80 sys=0.00, real=26.79 secs]
> > 2016-01-28T21:23:36.425-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> > [PSOldGen: 16777215K->16777216K(16777216K)]
> > 16777977K->16777977K(16780096K)
> > [PSPermGen: 222628K-222628K(222912K)], 43.0072820 secs] [Times:
> > user=43.01 sys=0.02, real=43.00 secs]
> > 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> > [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> > [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> > user=4.96 sys=0.04, real=5.00 secs]
> > 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> > [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> > [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> > user=4.96 sys=0.04, real=5.00 secs] Exception in thread "Low Memory
> > Detector" java.lang.OutOfMemoryError: Java heap space
> > 2016-01-28T21:24:24.438-0500: [GC [PSYoungGen: 128K->224K(8960K)]
> > 632939K->633035K(4351104K), 0.0045990 secs] [Times: user=0.02
> > 632939K->sys=0.00,
> > real=0.01 secs]
> > 2016-01-28T21:24:24.444-0500: [GC [PSYoungGen: 288K->192K(9088K)]
> > 633099K->633003K(4351232K), 0.0032440 secs] [Times: user=0.02
> > 633099K->sys=0.00,
> > real

Re: FW: Re: tomcat 6.0.41 heap size issue

2016-01-28 Thread kidambi madhu 
Hi Denny,

Which JDK you are using Oracle JDK/JRockit and which version.

Some memory tuning options depend on JDK product used.

Thanks,
Madhu

On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny  wrote:

>
> Hi All,
>
> Looking for help on tomcat heap size issue.
>
> We are see below GC activity before tomcat reports the heap size error.
> Please see below message. However, we assign -Xmx=24G to the heap size, why
> tomcat reports error even not reach 20G heap size usage ?  Can someone
> please help. How the tomcat decides how much memory allocate to young/old
> generation?
>
> We are running tomcat 6.0.41 on red hat linux as per our vendor.
>
> Thanks,
> Denny
>
> 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times: user=26.77
> sys=0.01, real=26.76 secs]
> 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times: user=26.51
> sys=0.01, real=26.50 secs]
> 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times: user=26.70
> sys=0.01, real=26.70 secs]
> 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times: user=26.73
> sys=0.01, real=26.72 secs]
> 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times: user=26.75
> sys=0.00, real=26.75 secs]
> 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7899470 secs] [Times: user=26.80
> sys=0.00, real=26.79 secs]
> 2016-01-28T21:23:36.425-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777216K(16777216K)] 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 43.0072820 secs] [Times: user=43.01
> sys=0.02, real=43.00 secs]
> 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times: user=4.96
> sys=0.04, real=5.00 secs]
> 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times: user=4.96
> sys=0.04, real=5.00 secs]
> Exception in thread "Low Memory Detector" java.lang.OutOfMemoryError: Java
> heap space
> 2016-01-28T21:24:24.438-0500: [GC [PSYoungGen: 128K->224K(8960K)]
> 632939K->633035K(4351104K), 0.0045990 secs] [Times: user=0.02 sys=0.00,
> real=0.01 secs]
> 2016-01-28T21:24:24.444-0500: [GC [PSYoungGen: 288K->192K(9088K)]
> 633099K->633003K(4351232K), 0.0032440 secs] [Times: user=0.02 sys=0.00,
> real=0.00 secs]
> 2016-01-28T21:24:24.449-0500: [GC [PSYoungGen: 254K->160K(9280K)]
> 633098K->633003K(4351424K), 0.0032180 secs] [Times: user=0.02 sys=0.00,
> real=0.01 secs]
> Jan 28, 2016 9:24:24 PM
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor
> processChildren
> SEVERE: Exception invoking periodic operation:
> java.lang.OutOfMemoryError: Java heap space
> at
> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:139)
> at
> org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389)
> at
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653)
> at
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642)
> at java.lang.Thread.run(Thread.java:662)
> Jan 28, 2016 9:24:24 PM org.apache.coyote.http11.Http11Processor process
> SEVERE: Error processing request
>
>
> [Facebook] 
> [Twitter]  [LinkedIn]  <
> http://www.linkedin.com/company/livingston-international>  [Google+]  <
> https://plus.google.com/+Livingstonintl/posts>
> [Livingston Logo]
>
>
>
>
>
> This e-mail may contain privileged and confidential information. If you
> are not the intended recipient, you are hereby notified that any review,
> dissemination, distribution or duplication of this communication is
> strictly prohibited. You are requested to notify the sender and delete this
> message and all copies thereof.

RE: FW: Re: tomcat 6.0.41 heap size issue

2016-01-28 Thread Guo, Denny 
Thanks for quick response. Here is the information.

java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)


-Original Message-
From: kidambi madhu [mailto:madhu.kida...@gmail.com]
Sent: Thursday, January 28, 2016 10:15 PM
To: Tomcat Users List
Subject: Re: FW: Re: tomcat 6.0.41 heap size issue

Hi Denny,

Which JDK you are using Oracle JDK/JRockit and which version.

Some memory tuning options depend on JDK product used.

Thanks,
Madhu

On Fri, Jan 29, 2016 at 8:39 AM, Guo, Denny <d...@livingstonintl.com> wrote:

>
> Hi All,
>
> Looking for help on tomcat heap size issue.
>
> We are see below GC activity before tomcat reports the heap size error.
> Please see below message. However, we assign -Xmx=24G to the heap
> size, why tomcat reports error even not reach 20G heap size usage ?
> Can someone please help. How the tomcat decides how much memory
> allocate to young/old generation?
>
> We are running tomcat 6.0.41 on red hat linux as per our vendor.
>
> Thanks,
> Denny
>
> 2016-01-28T21:20:56.173-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222720K)], 26.7667120 secs] [Times:
> user=26.77 sys=0.01, real=26.76 secs]
> 2016-01-28T21:21:22.942-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222720K)], 26.5016220 secs] [Times:
> user=26.51 sys=0.01, real=26.50 secs]
> 2016-01-28T21:21:49.444-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7081550 secs] [Times:
> user=26.70 sys=0.01, real=26.70 secs]
> 2016-01-28T21:22:16.154-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7299520 secs] [Times:
> user=26.73 sys=0.01, real=26.72 secs]
> 2016-01-28T21:22:42.884-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7488570 secs] [Times:
> user=26.75 sys=0.00, real=26.75 secs]
> 2016-01-28T21:23:09.635-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777215K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 26.7899470 secs] [Times:
> user=26.80 sys=0.00, real=26.79 secs]
> 2016-01-28T21:23:36.425-0500: [Full GC [PSYoungGen: 761K->761K(2880K)]
> [PSOldGen: 16777215K->16777216K(16777216K)]
> 16777977K->16777977K(16780096K)
> [PSPermGen: 222628K-222628K(222912K)], 43.0072820 secs] [Times:
> user=43.01 sys=0.02, real=43.00 secs]
> 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> user=4.96 sys=0.04, real=5.00 secs]
> 2016-01-28T21:24:19.435-0500: [Full GC [PSYoungGen: 761K->0K(2880K)]
> [PSOldGen: 16777216K->632811K(4342144K)] 16777977K->632811K(4345024K)
> [PSPermGen: 222628K->222628K(222912K)], 4.9992850 secs] [Times:
> user=4.96 sys=0.04, real=5.00 secs] Exception in thread "Low Memory
> Detector" java.lang.OutOfMemoryError: Java heap space
> 2016-01-28T21:24:24.438-0500: [GC [PSYoungGen: 128K->224K(8960K)]
> 632939K->633035K(4351104K), 0.0045990 secs] [Times: user=0.02
> 632939K->sys=0.00,
> real=0.01 secs]
> 2016-01-28T21:24:24.444-0500: [GC [PSYoungGen: 288K->192K(9088K)]
> 633099K->633003K(4351232K), 0.0032440 secs] [Times: user=0.02
> 633099K->sys=0.00,
> real=0.00 secs]
> 2016-01-28T21:24:24.449-0500: [GC [PSYoungGen: 254K->160K(9280K)]
> 633098K->633003K(4351424K), 0.0032180 secs] [Times: user=0.02
> 633098K->sys=0.00,
> real=0.01 secs]
> Jan 28, 2016 9:24:24 PM
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor
> processChildren
> SEVERE: Exception invoking periodic operation:
> java.lang.OutOfMemoryError: Java heap space
> at
> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:139)
> at
> org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389)
> at
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653)
> at
> org.apache.catalina.core.ContainerBase$ContainerBackgroundProces