Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-03 Thread Kaya Saman

On 01/03/2012 08:35 PM, Sergiu Dumitriu wrote:

On 01/03/2012 01:09 PM, Kaya Saman wrote:

On 01/03/2012 08:06 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:35 AM, Kaya Saman wrote:

On 01/03/2012 07:30 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD
8.2
x64. My machine is a quad core box with 4GB RAM and not much 
usage in

terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" 
java.lang.OutOfMemoryError:

Java heap space


I have attempted a resolution by including: - after Google'ing 
heavily

to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it
didn't
work.


The strange thing is that I had this wiki migrated to an old
PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to
the
amount of swap space consumed the system still worked fine for 
longer

then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which
worked
fine also and was up for many weeks even though pathetically 
slow.

actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the
JVM can use, and it should be done with the -Xmx1024m parameter as 
you

tried. And that value should be enough. Seeing that it doesn't work,
then catalina.sh must somehow discard that JAVA_OPTS variable along
the way. To test it, just do a ps or top after Tomcat is started to
see exactly what command line is being executed; does it have your 
Xmx

setting or not?

Anyway, I don't know how FreeBSD packages Tomcat, but normally you
shouldn't edit catalina.sh directly, there should be a dedicated
configuration file where you can specify parameters. On my Gentoo 
it's

in /etc/conf.d/tomcat-6. And the recommended variable to set is
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever
you set in CATALINA_OPTS to the final JAVA_OPTS that it computes and
which gets passed to the java command.


Thanks for that!

I've just changed the option to CATALINA_OPTS from JAVA_OPTS and 
see if

that works

running ps aux gave me this output but nothing substantial:


The lines get trimmed if you get the output directly from the console,
you should either pipe it to less, or redirect to a file that you can
inspect later.



That actually was output that was dumped into a file!


Weird... I haven't used a BSD in years, so I don't remember much about 
how it behaves.





USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
www 49976 26.5 2.6 313592 106244 ?? SsJ 5:31AM 0:07.31
/usr/local/diablo-jdk1.6.0/bin/java -
root 55971 0.0 0.0 5864 528 ?? SsJ Fri04PM 0:00.45 
/usr/sbin/syslogd -s

pgsql 56160 0.0 0.0 46296 624 ?? IsJ Fri04PM 0:00.24
/usr/local/bin/postgres -D /usr/local
pgsql 56162 0.0 0.0 46296 1708 ?? SsJ Fri04PM 0:17.84 postgres: writer
process (postgres
pgsql 56163 0.0 0.0 18256 252 ?? SsJ Fri04PM 0:01.60 postgres: stats
collector process
root 56196 0.0 0.0 10952 1044 ?? SsJ Fri04PM 0:03.36 sendmail: 
accepting

connections (send
smmsp 56200 0.0 0.0 10952 764 ?? IsJ Fri04PM 0:00.07 sendmail: Queue
runner@00:30:00 for /
root 56206 0.0 0.0 6920 860 ?? SsJ Fri04PM 0:00.58 /usr/sbin/cron -s
root 48393 0.0 0.1 9252 2124 1 SJ 5:01AM 0:00.02 tcsh
root 50053 0.0 0.0 6976 984 1 R+J 5:32AM 0:00.00 ps aux


I have been told that FreeBSD has always had issues with Java so 
I'm not

quite sure if that's what is happening here but for some reason Tomcat
keeps quitting.

If whatever I try doesn't work I guess I may have to create a cron job
that will restart Tomcat everyday as then I'm less likely to encounter
this error? - nasty but am out of options.




I managed to sort it however!


For anyone else using FreeBSD and Java (Diablo JRE 6 and Tomcat6) and
hosting the Xwiki app:


Add:

tomcat60_java_opts="-Djava.awt.headless=true -Dfile.encoding=UTF-8
-server -Xms3072m -Xmx3072m -XX:NewSize=256m -XX:MaxNewSize=256m
-XX:PermSize=256m -XX:MaxPermSize=256m -XX:+DisableExplicitGC"


To the /etc/rc.conf file.


Great! This should be added to the installation documentation on 
xwiki.org, let's see who has the time.


That's me! I'll do it :-) - unemployed at mo so have bundles or oodles 
of time to spare. Let me just get my own wiki and main site working 
properly up to the way I want them to then should be ok.


Actually come to think of it I maybe able to get away with 1.5GB for 
heap as I was trying to remove a very large album from the photo plugin app.


Currently top output is as:


Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-03 Thread Sergiu Dumitriu

On 01/03/2012 01:09 PM, Kaya Saman wrote:

On 01/03/2012 08:06 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:35 AM, Kaya Saman wrote:

On 01/03/2012 07:30 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD
8.2
x64. My machine is a quad core box with 4GB RAM and not much usage in
terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" java.lang.OutOfMemoryError:
Java heap space


I have attempted a resolution by including: - after Google'ing heavily
to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it
didn't
work.


The strange thing is that I had this wiki migrated to an old
PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to
the
amount of swap space consumed the system still worked fine for longer
then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which
worked
fine also and was up for many weeks even though pathetically slow.
actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the
JVM can use, and it should be done with the -Xmx1024m parameter as you
tried. And that value should be enough. Seeing that it doesn't work,
then catalina.sh must somehow discard that JAVA_OPTS variable along
the way. To test it, just do a ps or top after Tomcat is started to
see exactly what command line is being executed; does it have your Xmx
setting or not?

Anyway, I don't know how FreeBSD packages Tomcat, but normally you
shouldn't edit catalina.sh directly, there should be a dedicated
configuration file where you can specify parameters. On my Gentoo it's
in /etc/conf.d/tomcat-6. And the recommended variable to set is
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever
you set in CATALINA_OPTS to the final JAVA_OPTS that it computes and
which gets passed to the java command.


Thanks for that!

I've just changed the option to CATALINA_OPTS from JAVA_OPTS and see if
that works

running ps aux gave me this output but nothing substantial:


The lines get trimmed if you get the output directly from the console,
you should either pipe it to less, or redirect to a file that you can
inspect later.



That actually was output that was dumped into a file!


Weird... I haven't used a BSD in years, so I don't remember much about 
how it behaves.





USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
www 49976 26.5 2.6 313592 106244 ?? SsJ 5:31AM 0:07.31
/usr/local/diablo-jdk1.6.0/bin/java -
root 55971 0.0 0.0 5864 528 ?? SsJ Fri04PM 0:00.45 /usr/sbin/syslogd -s
pgsql 56160 0.0 0.0 46296 624 ?? IsJ Fri04PM 0:00.24
/usr/local/bin/postgres -D /usr/local
pgsql 56162 0.0 0.0 46296 1708 ?? SsJ Fri04PM 0:17.84 postgres: writer
process (postgres
pgsql 56163 0.0 0.0 18256 252 ?? SsJ Fri04PM 0:01.60 postgres: stats
collector process
root 56196 0.0 0.0 10952 1044 ?? SsJ Fri04PM 0:03.36 sendmail: accepting
connections (send
smmsp 56200 0.0 0.0 10952 764 ?? IsJ Fri04PM 0:00.07 sendmail: Queue
runner@00:30:00 for /
root 56206 0.0 0.0 6920 860 ?? SsJ Fri04PM 0:00.58 /usr/sbin/cron -s
root 48393 0.0 0.1 9252 2124 1 SJ 5:01AM 0:00.02 tcsh
root 50053 0.0 0.0 6976 984 1 R+J 5:32AM 0:00.00 ps aux


I have been told that FreeBSD has always had issues with Java so I'm not
quite sure if that's what is happening here but for some reason Tomcat
keeps quitting.

If whatever I try doesn't work I guess I may have to create a cron job
that will restart Tomcat everyday as then I'm less likely to encounter
this error? - nasty but am out of options.




I managed to sort it however!


For anyone else using FreeBSD and Java (Diablo JRE 6 and Tomcat6) and
hosting the Xwiki app:


Add:

tomcat60_java_opts="-Djava.awt.headless=true -Dfile.encoding=UTF-8
-server -Xms3072m -Xmx3072m -XX:NewSize=256m -XX:MaxNewSize=256m
-XX:PermSize=256m -XX:MaxPermSize=256m -XX:+DisableExplicitGC"


To the /etc/rc.conf file.


Great! This should be added to the installation documentation on 
xwiki.org, let's see who has the time.



Majority of options in FreeBSD for services like mine which has been
built using FreeBSD ports are in there!


Basically the -Xms and -Xmx values needed to be set to 3GB..

Now all is fine even though swap is heavily used but I guess that's Java!



-Xms and -XX:PermSize set the initial sizes of the heap and PermGen 
spaces, which means that the JVM will request all that memory at once. 
If you have other services/applications running beside

Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-03 Thread Kaya Saman

On 01/03/2012 08:06 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:35 AM, Kaya Saman wrote:

On 01/03/2012 07:30 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD 
8.2

x64. My machine is a quad core box with 4GB RAM and not much usage in
terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" java.lang.OutOfMemoryError:
Java heap space


I have attempted a resolution by including: - after Google'ing heavily
to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it 
didn't

work.


The strange thing is that I had this wiki migrated to an old 
PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to 
the

amount of swap space consumed the system still worked fine for longer
then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which 
worked

fine also and was up for many weeks even though pathetically slow.
actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the
JVM can use, and it should be done with the -Xmx1024m parameter as you
tried. And that value should be enough. Seeing that it doesn't work,
then catalina.sh must somehow discard that JAVA_OPTS variable along
the way. To test it, just do a ps or top after Tomcat is started to
see exactly what command line is being executed; does it have your Xmx
setting or not?

Anyway, I don't know how FreeBSD packages Tomcat, but normally you
shouldn't edit catalina.sh directly, there should be a dedicated
configuration file where you can specify parameters. On my Gentoo it's
in /etc/conf.d/tomcat-6. And the recommended variable to set is
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever
you set in CATALINA_OPTS to the final JAVA_OPTS that it computes and
which gets passed to the java command.


Thanks for that!

I've just changed the option to CATALINA_OPTS from JAVA_OPTS and see if
that works

running ps aux gave me this output but nothing substantial:


The lines get trimmed if you get the output directly from the console, 
you should either pipe it to less, or redirect to a file that you can 
inspect later.




That actually was output that was dumped into a file!



USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
www 49976 26.5 2.6 313592 106244 ?? SsJ 5:31AM 0:07.31
/usr/local/diablo-jdk1.6.0/bin/java -
root 55971 0.0 0.0 5864 528 ?? SsJ Fri04PM 0:00.45 /usr/sbin/syslogd -s
pgsql 56160 0.0 0.0 46296 624 ?? IsJ Fri04PM 0:00.24
/usr/local/bin/postgres -D /usr/local
pgsql 56162 0.0 0.0 46296 1708 ?? SsJ Fri04PM 0:17.84 postgres: writer
process (postgres
pgsql 56163 0.0 0.0 18256 252 ?? SsJ Fri04PM 0:01.60 postgres: stats
collector process
root 56196 0.0 0.0 10952 1044 ?? SsJ Fri04PM 0:03.36 sendmail: accepting
connections (send
smmsp 56200 0.0 0.0 10952 764 ?? IsJ Fri04PM 0:00.07 sendmail: Queue
runner@00:30:00 for /
root 56206 0.0 0.0 6920 860 ?? SsJ Fri04PM 0:00.58 /usr/sbin/cron -s
root 48393 0.0 0.1 9252 2124 1 SJ 5:01AM 0:00.02 tcsh
root 50053 0.0 0.0 6976 984 1 R+J 5:32AM 0:00.00 ps aux


I have been told that FreeBSD has always had issues with Java so I'm not
quite sure if that's what is happening here but for some reason Tomcat
keeps quitting.

If whatever I try doesn't work I guess I may have to create a cron job
that will restart Tomcat everyday as then I'm less likely to encounter
this error? - nasty but am out of options.




I managed to sort it however!


For anyone else using FreeBSD and Java (Diablo JRE 6 and Tomcat6) and 
hosting the Xwiki app:



Add:

tomcat60_java_opts="-Djava.awt.headless=true -Dfile.encoding=UTF-8 
-server -Xms3072m -Xmx3072m -XX:NewSize=256m -XX:MaxNewSize=256m 
-XX:PermSize=256m -XX:MaxPermSize=256m -XX:+DisableExplicitGC"



To the /etc/rc.conf file.

Majority of options in FreeBSD for services like mine which has been 
built using FreeBSD ports are in there!



Basically the -Xms and -Xmx values needed to be set to 3GB..

Now all is fine even though swap is heavily used but I guess that's Java!


I will still have to test over a long period of time but it is looking 
good currently.


Thanks


Regards,

Kaya
___
users mailing list
users@xwiki.org
http://lists.xwiki.org/mailman/listinfo/users


Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-02 Thread Sergiu Dumitriu

On 01/03/2012 12:35 AM, Kaya Saman wrote:

On 01/03/2012 07:30 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD 8.2
x64. My machine is a quad core box with 4GB RAM and not much usage in
terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" java.lang.OutOfMemoryError:
Java heap space


I have attempted a resolution by including: - after Google'ing heavily
to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it didn't
work.


The strange thing is that I had this wiki migrated to an old PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to the
amount of swap space consumed the system still worked fine for longer
then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which worked
fine also and was up for many weeks even though pathetically slow.
actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the
JVM can use, and it should be done with the -Xmx1024m parameter as you
tried. And that value should be enough. Seeing that it doesn't work,
then catalina.sh must somehow discard that JAVA_OPTS variable along
the way. To test it, just do a ps or top after Tomcat is started to
see exactly what command line is being executed; does it have your Xmx
setting or not?

Anyway, I don't know how FreeBSD packages Tomcat, but normally you
shouldn't edit catalina.sh directly, there should be a dedicated
configuration file where you can specify parameters. On my Gentoo it's
in /etc/conf.d/tomcat-6. And the recommended variable to set is
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever
you set in CATALINA_OPTS to the final JAVA_OPTS that it computes and
which gets passed to the java command.


Thanks for that!

I've just changed the option to CATALINA_OPTS from JAVA_OPTS and see if
that works

running ps aux gave me this output but nothing substantial:


The lines get trimmed if you get the output directly from the console, 
you should either pipe it to less, or redirect to a file that you can 
inspect later.



USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
www 49976 26.5 2.6 313592 106244 ?? SsJ 5:31AM 0:07.31
/usr/local/diablo-jdk1.6.0/bin/java -
root 55971 0.0 0.0 5864 528 ?? SsJ Fri04PM 0:00.45 /usr/sbin/syslogd -s
pgsql 56160 0.0 0.0 46296 624 ?? IsJ Fri04PM 0:00.24
/usr/local/bin/postgres -D /usr/local
pgsql 56162 0.0 0.0 46296 1708 ?? SsJ Fri04PM 0:17.84 postgres: writer
process (postgres
pgsql 56163 0.0 0.0 18256 252 ?? SsJ Fri04PM 0:01.60 postgres: stats
collector process
root 56196 0.0 0.0 10952 1044 ?? SsJ Fri04PM 0:03.36 sendmail: accepting
connections (send
smmsp 56200 0.0 0.0 10952 764 ?? IsJ Fri04PM 0:00.07 sendmail: Queue
runner@00:30:00 for /
root 56206 0.0 0.0 6920 860 ?? SsJ Fri04PM 0:00.58 /usr/sbin/cron -s
root 48393 0.0 0.1 9252 2124 1 SJ 5:01AM 0:00.02 tcsh
root 50053 0.0 0.0 6976 984 1 R+J 5:32AM 0:00.00 ps aux


I have been told that FreeBSD has always had issues with Java so I'm not
quite sure if that's what is happening here but for some reason Tomcat
keeps quitting.

If whatever I try doesn't work I guess I may have to create a cron job
that will restart Tomcat everyday as then I'm less likely to encounter
this error? - nasty but am out of options.


--
Sergiu Dumitriu
http://purl.org/net/sergiu/
___
users mailing list
users@xwiki.org
http://lists.xwiki.org/mailman/listinfo/users


Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-02 Thread Kaya Saman

On 01/03/2012 07:30 AM, Sergiu Dumitriu wrote:

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD 8.2
x64. My machine is a quad core box with 4GB RAM and not much usage in
terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" java.lang.OutOfMemoryError:
Java heap space


I have attempted a resolution by including: - after Google'ing heavily
to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it didn't
work.


The strange thing is that I had this wiki migrated to an old PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to the
amount of swap space consumed the system still worked fine for longer
then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which worked
fine also and was up for many weeks even though pathetically slow.
actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the 
JVM can use, and it should be done with the -Xmx1024m parameter as you 
tried. And that value should be enough. Seeing that it doesn't work, 
then catalina.sh must somehow discard that JAVA_OPTS variable along 
the way. To test it, just do a ps or top after Tomcat is started to 
see exactly what command line is being executed; does it have your Xmx 
setting or not?


Anyway, I don't know how FreeBSD packages Tomcat, but normally you 
shouldn't edit catalina.sh directly, there should be a dedicated 
configuration file where you can specify parameters. On my Gentoo it's 
in /etc/conf.d/tomcat-6. And the recommended variable to set is 
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever 
you set in CATALINA_OPTS to the final JAVA_OPTS that it computes and 
which gets passed to the java command.


Thanks for that!

I've just changed the option to CATALINA_OPTS from JAVA_OPTS and see if 
that works


running ps aux gave me this output but nothing substantial:

USERPID %CPU %MEM   VSZ   RSS  TT  STAT STARTED  TIME COMMAND
www   49976 26.5  2.6 313592 106244  ??  SsJ   5:31AM   0:07.31 
/usr/local/diablo-jdk1.6.0/bin/java -
root  55971  0.0  0.0  5864   528  ??  SsJ  Fri04PM   0:00.45 
/usr/sbin/syslogd -s
pgsql 56160  0.0  0.0 46296   624  ??  IsJ  Fri04PM   0:00.24 
/usr/local/bin/postgres -D /usr/local
pgsql 56162  0.0  0.0 46296  1708  ??  SsJ  Fri04PM   0:17.84 postgres: 
writer process(postgres
pgsql 56163  0.0  0.0 18256   252  ??  SsJ  Fri04PM   0:01.60 postgres: 
stats collector process
root  56196  0.0  0.0 10952  1044  ??  SsJ  Fri04PM   0:03.36 sendmail: 
accepting connections (send
smmsp 56200  0.0  0.0 10952   764  ??  IsJ  Fri04PM   0:00.07 sendmail: 
Queue runner@00:30:00 for /
root  56206  0.0  0.0  6920   860  ??  SsJ  Fri04PM   0:00.58 
/usr/sbin/cron -s

root  48393  0.0  0.1  9252  2124   1  SJ5:01AM   0:00.02 tcsh
root  50053  0.0  0.0  6976   984   1  R+J   5:32AM   0:00.00 ps aux


I have been told that FreeBSD has always had issues with Java so I'm not 
quite sure if that's what is happening here but for some reason Tomcat 
keeps quitting.


If whatever I try doesn't work I guess I may have to create a cron job 
that will restart Tomcat everyday as then I'm less likely to encounter 
this error? - nasty but am out of options.

___
users mailing list
users@xwiki.org
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Re: [xwiki-users] Out of memory error?? Java Heap Space on Tomcat6

2012-01-02 Thread Sergiu Dumitriu

On 01/03/2012 12:13 AM, Kaya Saman wrote:

Hi,

first up Happy New Year to everyone :-)

Secondly, I've been trying to stabilize my Xwiki install on FreeBSD 8.2
x64. My machine is a quad core box with 4GB RAM and not much usage in
terms of people viewing the wiki etc

I am getting this error:

umbers=0&rev=11.1" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-8180-Acceptor-0" java.lang.OutOfMemoryError:
Java heap space


I have attempted a resolution by including: - after Google'ing heavily
to see what could be done to rectify the issue.

JAVA_OPTS=-Xmx1024m
JAVA_OPTS=-Xms1024m
#JAVA_OPTS=-XX:PermSize=64M
#JAVA_OPTS=-XX:MaxPermSize=256m

at the top of the catalina.sh file but as I've just found out it didn't
work.


The strange thing is that I had this wiki migrated to an old PowerMac G4
733MHz with 384MB RAM and even though the cpu went up to max due to the
amount of swap space consumed the system still worked fine for longer
then my BSD machine at least.

Can anyone give me a hand in order to diagnose the problem?


I have tried this also on Nexenta Core 3 (OpenSolaris) on a virtual
machine running on my notebook with 2GB RAM dedicated to it which worked
fine also and was up for many weeks even though pathetically slow.
actually I was running Glassfishv3 but it was still Java!


Thanks,


Indeed, the proper fix is to increase the amount of memory that the JVM 
can use, and it should be done with the -Xmx1024m parameter as you 
tried. And that value should be enough. Seeing that it doesn't work, 
then catalina.sh must somehow discard that JAVA_OPTS variable along the 
way. To test it, just do a ps or top after Tomcat is started to see 
exactly what command line is being executed; does it have your Xmx 
setting or not?


Anyway, I don't know how FreeBSD packages Tomcat, but normally you 
shouldn't edit catalina.sh directly, there should be a dedicated 
configuration file where you can specify parameters. On my Gentoo it's 
in /etc/conf.d/tomcat-6. And the recommended variable to set is 
CATALINA_OPTS, not JAVA_OPTS, and catalina.sh should append whatever you 
set in CATALINA_OPTS to the final JAVA_OPTS that it computes and which 
gets passed to the java command.

--
Sergiu Dumitriu
http://purl.org/net/sergiu/
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