Skip to main content

Weird memory usage in Oracle Linux

I have a oracle linux 7 running Pentaho (an java
application).

This machine has 23 GB of ram and improve pentaho
performance I'm trying to configure java to alocate 10 GB of RAM to pentaho ( -Xms10240m
). But after I start pentaho I get
this.



biserver-ce]# free
            -g
 total used free shared buff/cache available
Mem: 23 4 0 0 18
            18
Swap: 9 0
            9


The math don't match
(4GB used memory + 0 free memory isn't equal to
23G).




The swap memory is unused and I
don't understand why of 18G of data in cache. In another machine with the same config
but for test this not happening.



The java
process running 



 root 12409 1 2
            Jul26 ? 00:21:16 java -
            Djava.util.logging.config.file=/opt/pentaho/server/biserver-ce/tomcat/conf/logging.properties
            -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Dserver -Xmx10240m
            -Xms10240m -XX:MaxPermSize=1024m -Dsun.rmi.dgc.client.gcInterval=3600000
            -Dsun.rmi.dgc.server.gcInterval=3600000 -Dsun.jnu.encoding=utf-8 -Dfile.encoding=utf-8
            -Djava.awt.headless=true
            -Djava.endorsed.dirs=/opt/pentaho/server/biserver-ce/tomcat/endorsed -classpath
            /opt/pentaho/server/biserver-ce/tomcat/bin/bootstrap.jar
            -Dcatalina.base=/opt/pentaho/server/biserver-ce/tomcat
            -Dcatalina.home=/opt/pentaho/server/biserver-ce/tomcat
            -Djava.io.tmpdir=/opt/pentaho/server/biserver-ce/tomcat/temp
            org.apache.catalina.startup.Bootstrap
            start


limits
config



#ulimit
            -a

core file size (blocks, -c) 0
data seg size (kbytes,
            -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f)
            unlimited
pending signals (-i) 190821
max locked memory (kbytes, -l)
            64
max memory size (kbytes, -m) unlimited
open files (-n)
            1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q)
            819200

real-time priority (-r) 0
stack size (kbytes, -s)
            8192
cpu time (seconds, -t) unlimited
max user processes (-u)
            190821
virtual memory (kbytes, -v) unlimited
file locks (-x)
            unlimited


EDIT:




After
clear the cache with 



echo 3 >
            /proc/sys/vm/drop_caches


I
can start the service with 10Gb of RAM, but if I stop the service the cache grow up
again. Is there a way to avoid manually clear the cache every time I stop/start the
service?

Comments

Post a Comment

Popular posts from this blog

linux - iDRAC6 Virtual Media native library cannot be loaded

When attempting to mount Virtual Media on a iDRAC6 IP KVM session I get the following error: I'm using Ubuntu 9.04 and: $ javaws -version Java(TM) Web Start 1.6.0_16 $ uname -a Linux aud22419-linux 2.6.28-15-generic #51-Ubuntu SMP Mon Aug 31 13:39:06 UTC 2009 x86_64 GNU/Linux $ firefox -version Mozilla Firefox 3.0.14, Copyright (c) 1998 - 2009 mozilla.org On Windows + IE it (unsurprisingly) works. I've just gotten off the phone with the Dell tech support and I was told it is known to work on Linux + Firefox, albeit Ubuntu is not supported (by Dell, that is). Has anyone out there managed to mount virtual media in the same scenario?
Post a Comment
Read more

ubuntu - Monitoring CPU, Mem, disk, on a single server

I've been looking for a simple starter solution for monitoring my [currently] single server hosted solution. Other than Nagios and similar, are there other good (simple) solutions people are using? Answer Everything depends on what you want. For example Munin is very simple, you can install and configure it in less then 10 minutes (on one server), it can sends alarms, make graphs from monitoring cpu, mem. apache connections, eaccellerator, disk io and many many more (it has many plugins). But if you are planning in future get some more machines, munin may not be enough. For example in munin you cant monitor state of individual processes, can't monitor changes in files (for security purpose). So if you wanna only see what is the utilization of basics parameters on your server and don't plan to buy some more servers Munin is what you are looking for, but if you wanna be alarmed when some of your service is down, take more control on what is happeninig on...
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits, ...
Post a Comment
Read more