blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } That is correct and baffling. My user doesn't own that memory
and the unix admin keeps saying it is an issue with a memory leak but if that
was so wouldn't my user own the memory?
Your thoughts would be helpful. Sorry about the formatting.
Sent from Yahoo Mail for iPhone
On Monday, March 20, 2017, 12:07 PM, André Warnier (tomcat) <a...@ice-sa.com>
wrote:
Hi.
I will exceptionally contravene the usual rules of this list, which are to not
top-post.
But your message below is so badly-formatted, that a comment in the middle
would be
difficut to read otherwise.
One thing attracted my attention below : you mention that "the entire memory
was being
used", which seems substantiated by a part of the "top" display :
> Mem: 16334352k total, 15623536k used, 710816k free, 84096k buffers
But, in the subsequent per-process top display, it shows this :
> 2019 siteadm 20 0 6054m 4.1g 17m S 98.0 26.5 11:29.56 java
So, this java process is using 4.1 GB of real memory.
Where did the other 11.9 GB go ?
You might want to run your Java application, and "top" again (without "-U"),
and this time
enter an "M" when top is running, to sort the processes by memory usage.
On 20.03.2017 17:46, Eric Chua wrote:
> blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
>#715FFA solid !important; padding-left:1ex !important; background-color:white
>!important; } I used jvmtop. The web application used the entire 16gb and the
>allocated heap. The report I was running never finished
>
> ARGS: start
>
> VMARGS: -Djava.util.logging.config.file=/data/tomcat/AgencyWebApp/conf/lo[...]
>
> VM: Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 1.8.0_121
>
> UP: 0:13m #THR: 41 #THRPEAK: 42 #THRCREATED: 49 USER: siteadm
>
> GC-Time: 0: 5m #GC-Runs: 75 #TotalLoadedClasses: 12440
>
> CPU: 91.16% GC: 0.00% HEAP:3590m /3855m NONHEAP: 115m / n/a
>
>
>
> TID NAME STATE CPU TOTALCPU
>BLOCKEDBY
>
> 42 ajp-nio-8011-exec-8 RUNNABLE 69.88% 4.63%
>
> 35 ajp-nio-8011-exec-1 RUNNABLE 19.04% 15.49%
>
> 55 RMI TCP Connection(9)-127.0.0. RUNNABLE 1.60% 0.20%
>
> 54 JMX server connection timeout TIMED_WAITING 0.09% 0.01%
>
> 12 NioBlockingSelector.BlockPolle RUNNABLE 0.07% 0.14%
>
> 47 ajp-nio-8011-AsyncTimeout TIMED_WAITING 0.02% 0.02%
>
> 32 http-nio-8086-ClientPoller-0 RUNNABLE 0.00% 0.05%
>
> 45 ajp-nio-8011-ClientPoller-0 RUNNABLE 0.00% 0.10%
>
> 11 NioBlockingSelector.BlockPolle RUNNABLE 0.00% 0.01%
>
> 34 http-nio-8086-AsyncTimeout TIMED_WAITING 0.00% 0.01%
>
> Note: Only top 10 threads (according cpu load) are shown!
>
> Mar 20, 2017 12:39:28 PM ClientCommunicatorAdmin Checker-run
>
> WARNING: Failed to check the connection: java.net.SocketTimeoutException:
> Read timed out
>
> ^[[A^C^C^C^C^C^C^C^C^C
>
>
>
> siteadm@mavs01web11q:/data/tools/jvmtop $ top -U siteadm
>
> top - 12:41:20 up 19 min, 3 users, load average: 1.25, 1.24, 0.87
>
> Tasks: 130 total, 1 running, 129 sleeping, 0 stopped, 0 zombie
>
> Cpu(s): 98.5%us, 1.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.5%si, 0.0%st
>
> Mem: 16334352k total, 15623536k used, 710816k free, 84096k buffers
>
> Swap: 4128764k total, 0k used, 4128764k free, 339484k cached
>
>
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>
> 2019 siteadm 20 0 6054m 4.1g 17m S 98.0 26.5 11:29.56 java
>
> 2523 siteadm 20 0 19288 1452 1080 R 0.3 0.0 0:00.02 top
>
> 1950 siteadm 20 0 105m 2100 1560 S 0.0 0.0 0:00.14 bash
>
>
> Sent from Yahoo Mail for iPhone
>
>
> On Monday, March 20, 2017, 10:21 AM, Eric Chua <in_hi...@yahoo.com> wrote:
>
>
> siteadm 2007 1 7 11:04 pts/0 00:00:00
> /data/java/jdk1.8.0_121/bin/java
> -Djava.util.logging.config.file=/data/tomcat/AgencyWebApp/conf/logging.properties
> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
> -Daccuity.servername=mavs01web11q
> -Dorg.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING=false
> -Djdk.tls.ephemeralDHKeySize=2048
> -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -classpath
> /data/tomcat/apache-tomcat/bin/bootstrap.jar:/data/tomcat/apache-tomcat/bin/tomcat-juli.jar
> -Dcatalina.base=/data/tomcat/AgencyWebApp
> -Dcatalina.home=/data/tomcat/apache-tomcat
> -Djava.io.tmpdir=/data/tomcat/AgencyWebApp/temp
> org.apache.catalina.startup.Bootstrap start
>
>
> My kernel is 2.6.32-642.15.1.elf.x86_64
> Memory gets all allocated and after I kill it only a portion is recovered.
> Any ideas?
>
> top - 11:18:36 up 16 min, 2 users, load average: 1.92, 1.39, 0.68
>
> Tasks: 123 total, 1 running, 122 sleeping, 0 stopped, 0 zombie
>
> Cpu(s): 0.7%us, 0.0%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
>
> Mem: 16334352k total, 11215624k used, 5118728k free, 33788k buffers
>
> Swap: 4128764k total, 0k used, 4128764k free, 313940k cached
>
>
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>
> 1931 siteadm 20 0 105m 2120 1568 S 0.0 0.0 0:00.10 bash
>
> 2319 siteadm 20 0 19288 1460 1092 R 0.0 0.0 0:00.09 top
>
>
>
> Sent from Yahoo Mail for iPhone
>
>
> On Friday, March 17, 2017, 8:54 AM, Christopher Schultz
> <ch...@christopherschultz.net> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Eric,
>
> On 3/16/17 11:01 PM, Eric Chua wrote:
>> I am running tomcat 8.0.121. When I start my tomcat, it seems to
>> be eating up all the memory on my system. I have 16 GB, and it
>> keeps on going.
>
> What are your memory-related parameters when you launch the JVM?
>
> Note that Java *never* gives any memory back to the OS, even when the
> heap-usage goes down. This is a Java thing, not a Tomcat thing.
>
>> Then when I try to kill the process, it dies but 12 GB is still
>> being used even though everything is turn off.
>
> That makes no sense at all. Please provide some evidence this is
> happening.
>
>> The only way to reclaim the memory is to reboot.
>
> If this is true, then you have some kind of awful kernel bug.
>
>> I am running on redhat 6.5 and can't figure out what could be
>> causing this. I run the tomcat as a local user, and I know there
>> aren't any other processes running as the local user. I am running
>> a spring MVC 4/Java 8/ struts web application. I have two of them
>> with the same issue. Any help would be appreciated. When I try to
>> view all the running processes I cannot see where most of the 12 gb
>> are being used. The system came up with 2.2 gb used and after I
>> start one web application it goes to 14-15gb.
>
> Ok.
>
>> The funny thing is that I can kill it to reclaim the memory. Only
>> a reboot works.
>
> You mean you CAN'T kill in to reclaim memory, right?
>
>> I am running a VMware instance with vcenter version 6.5. This
>> does not happen with Java 7 with tomcat 7. Any help would be
>> appreciate.
>
> Something tells me you are reading or interpreting something
> incorrectly, here. Can you please share your raw data, and where you
> got that raw data? Something like reports from free/ps/top/sar/etc.?
>
> - -chris
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