13 Feb
2012
13 Feb
'12
6:30 p.m.
Hi Andrey,
You're running using Jetty and HSQL? I had similar problems and eventually
moved to Apache Tomcat and MySQL which are more memory efficient - suggest
you to the same although I don't lnow if there is another way but I exported
my pages to .xar files which I had to break into small .xar file in order to
reimport into my new xwiki on Tomcat and MySql (I kept the two installations
running until we were happy we had copied everything across ... This process
wasn't easy!
Hope that helps.
Regards,
Richard
-----Original Message-----
From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
Crowd Covered
Sent: 13 February 2012 17:21
To: users(a)xwiki.org
Subject: [xwiki-users] Performance tuning for growing wiki
Hi guys,
Thanks again for great collaborative tool!
We currently have about 1200 pages inside, many with objects, where several
people search/read/edit info every day. And we are experiencing performance
problems - at least once a day, sometimes more often wiki becomes
unresponsive for 3-10 minutes while having high CPU load (my guess is either
page file swapping or garbage collection by JVM), Out Of Memory errors
becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
several times a day). Additionally we've got repeating problems even with
quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
According to recommendation in guides and some talks on the Internet I tend
to try database tuning or change. Could you please recommend a good
candidate among freely available databases or even give a hints on HSQLDB
tuning (maybe changing default memory mode to cached)? I've taken a look at
H2 vs. HSQLDB comparison but there are quite controversial opinions...
Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
RAM. BTW, is this in general expected behavior for such configuration?
Many thanks,
Andrey
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
13 Feb
13 Feb
6:34 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
On Feb 13, 2012, at 6:30 PM, goldring, richard wrote:
Hi Andrey,
You're running using Jetty and HSQL? I had similar problems and eventually
moved to Apache Tomcat and MySQL which are more memory efficient - suggest
you to the same although I don't lnow if there is another way but I exported
my pages to .xar files which I had to break into small .xar file in order to
reimport into my new xwiki on Tomcat and MySql (I kept the two installations
running until we were happy we had copied everything across ... This process
wasn't easy!
Using the large import/export tools on extensions.xwiki.org should make this much easier.
I don't know if there are tools to move a DB from HSQLDB to MySQL.
Thanks
-Vincent
Hope that helps.
Regards,
Richard
-----Original Message-----
From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
Crowd Covered
Sent: 13 February 2012 17:21
To: users(a)xwiki.org
Subject: [xwiki-users] Performance tuning for growing wiki
Hi guys,
Thanks again for great collaborative tool!
We currently have about 1200 pages inside, many with objects, where several
people search/read/edit info every day. And we are experiencing performance
problems - at least once a day, sometimes more often wiki becomes
unresponsive for 3-10 minutes while having high CPU load (my guess is either
page file swapping or garbage collection by JVM), Out Of Memory errors
becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
several times a day). Additionally we've got repeating problems even with
quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
According to recommendation in guides and some talks on the Internet I tend
to try database tuning or change. Could you please recommend a good
candidate among freely available databases or even give a hints on HSQLDB
tuning (maybe changing default memory mode to cached)? I've taken a look at
H2 vs. HSQLDB comparison but there are quite controversial opinions...
Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
RAM. BTW, is this in general expected behavior for such configuration?
Many thanks,
Andrey
6:59 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
I see that the performance using MySQL is better than using HSQL.
But why does XWiki recommend to use Tomcat as WAS?
I have heard that Jetty is so efficient, lightweight and flexible that
it can replace Tomcat in many common cases.
So I'm playing with Nginx + configured XEM standalone package (Jetty +
MySQL) for prduction.
Does XWiki have the other reasons recommending Tomcat?
@WhyKesarr. MetaDeveloper.
"Keep the modifications due to a single change together in a predictable
range."
2012. 2. 14. 오전 2:31 "goldring, richard"
<richard.goldring(a)uk.thalesgroup.com> 작성:
Hi Andrey,
You're running using Jetty and HSQL? I had similar problems and eventually
moved to Apache Tomcat and MySQL which are more memory efficient - suggest
you to the same although I don't lnow if there is another way but I exported
my pages to .xar files which I had to break into small .xar file in order to
reimport into my new xwiki on Tomcat and MySql (I kept the two installations
running until we were happy we had copied everything across ... This process
wasn't easy!
Hope that helps.
Regards,
Richard
-----Original Message-----
From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
Crowd Covered
Sent: 13 February 2012 17:21
To: users(a)xwiki.org
Subject: [xwiki-users] Performance tuning for growing wiki
Hi guys,
Thanks again for great collaborative tool!
We currently have about 1200 pages inside, many with objects, where several
people search/read/edit info every day. And we are experiencing performance
problems - at least once a day, sometimes more often wiki becomes
unresponsive for 3-10 minutes while having high CPU load (my guess is either
page file swapping or garbage collection by JVM), Out Of Memory errors
becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
several times a day). Additionally we've got repeating problems even with
quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
According to recommendation in guides and some talks on the Internet I tend
to try database tuning or change. Could you please recommend a good
candidate among freely available databases or even give a hints on HSQLDB
tuning (maybe changing default memory mode to cached)? I've taken a look at
H2 vs. HSQLDB comparison but there are quite controversial opinions...
Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
RAM. BTW, is this in general expected behavior for such configuration?
Many thanks,
Andrey
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
7:05 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
On 02/13/2012 12:59 PM, 변형진 wrote:
I see that the performance using MySQL is better than
using HSQL.
But why does XWiki recommend to use Tomcat as WAS?
I have heard that Jetty is so efficient, lightweight and flexible that
it can replace Tomcat in many common cases.
So I'm playing with Nginx + configured XEM standalone package (Jetty +
MySQL) for prduction.
Does XWiki have the other reasons recommending Tomcat?
Personally I'm very happy with Jetty as well, and on the contrary, I'm
unhappy with some of the decisions taken by the Tomcat developers, which
IMO looks like a legacy project still sticking to last century's
standards, for "backwards compatibility". Sure, things can be
configured, like switching to UTF-8 for parsing the query string, or
disabling the %2F security warning, but still we get a lot of bug
reports caused by these default settings and people not reading the
installation guide for Tomcat.
@WhyKesarr. MetaDeveloper.
"Keep the modifications due to a single change together in a predictable
range."
2012. 2. 14. 오전 2:31 "goldring, richard"
<richard.goldring(a)uk.thalesgroup.com> 작성:
> Hi Andrey,
>
> You're running using Jetty and HSQL? I had similar problems and eventually
> moved to Apache Tomcat and MySQL which are more memory efficient - suggest
> you to the same although I don't lnow if there is another way but I exported
> my pages to .xar files which I had to break into small .xar file in order to
> reimport into my new xwiki on Tomcat and MySql (I kept the two installations
> running until we were happy we had copied everything across ... This process
> wasn't easy!
>
> Hope that helps.
>
> Regards,
>
> Richard
>
> -----Original Message-----
> From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
> Crowd Covered
> Sent: 13 February 2012 17:21
> To: users(a)xwiki.org
> Subject: [xwiki-users] Performance tuning for growing wiki
>
> Hi guys,
>
> Thanks again for great collaborative tool!
>
> We currently have about 1200 pages inside, many with objects, where several
> people search/read/edit info every day. And we are experiencing performance
> problems - at least once a day, sometimes more often wiki becomes
> unresponsive for 3-10 minutes while having high CPU load (my guess is either
> page file swapping or garbage collection by JVM), Out Of Memory errors
> becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
> several times a day). Additionally we've got repeating problems even with
> quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
>
> According to recommendation in guides and some talks on the Internet I tend
> to try database tuning or change. Could you please recommend a good
> candidate among freely available databases or even give a hints on HSQLDB
> tuning (maybe changing default memory mode to cached)? I've taken a look at
> H2 vs. HSQLDB comparison but there are quite controversial opinions...
>
> Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
> database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
> RAM. BTW, is this in general expected behavior for such configuration?
>
> Many thanks,
> Andrey
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
8:39 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
As a personal experience, more based on habits, tomcat is of real good quality most of the
times.
Things like encoding must be cared for early... but that is easy to make.
i2geo.net is used quite commonly and runs tomcat 7 (with my own scripts... but I do not
think that makes a big difference).
paul
Le 13 févr. 2012 à 19:05, Sergiu Dumitriu a écrit :
On 02/13/2012 12:59 PM, 변형진 wrote:
I see that the performance using MySQL is better
than using HSQL.
But why does XWiki recommend to use Tomcat as WAS?
I have heard that Jetty is so efficient, lightweight and flexible that
it can replace Tomcat in many common cases.
So I'm playing with Nginx + configured XEM standalone package (Jetty +
MySQL) for prduction.
Does XWiki have the other reasons recommending Tomcat?
Personally I'm very happy with Jetty as well, and on the contrary, I'm unhappy
with some of the decisions taken by the Tomcat developers, which IMO looks like a legacy
project still sticking to last century's standards, for "backwards
compatibility". Sure, things can be configured, like switching to UTF-8 for parsing
the query string, or disabling the %2F security warning, but still we get a lot of bug
reports caused by these default settings and people not reading the installation guide for
Tomcat.
@WhyKesarr. MetaDeveloper.
"Keep the modifications due to a single change together in a predictable
range."
2012. 2. 14. 오전 2:31 "goldring, richard"
<richard.goldring(a)uk.thalesgroup.com> 작성:
> Hi Andrey,
>
> You're running using Jetty and HSQL? I had similar problems and eventually
> moved to Apache Tomcat and MySQL which are more memory efficient - suggest
> you to the same although I don't lnow if there is another way but I exported
> my pages to .xar files which I had to break into small .xar file in order to
> reimport into my new xwiki on Tomcat and MySql (I kept the two installations
> running until we were happy we had copied everything across ... This process
> wasn't easy!
>
> Hope that helps.
>
> Regards,
>
> Richard
>
> -----Original Message-----
> From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
> Crowd Covered
> Sent: 13 February 2012 17:21
> To: users(a)xwiki.org
> Subject: [xwiki-users] Performance tuning for growing wiki
>
> Hi guys,
>
> Thanks again for great collaborative tool!
>
> We currently have about 1200 pages inside, many with objects, where several
> people search/read/edit info every day. And we are experiencing performance
> problems - at least once a day, sometimes more often wiki becomes
> unresponsive for 3-10 minutes while having high CPU load (my guess is either
> page file swapping or garbage collection by JVM), Out Of Memory errors
> becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
> several times a day). Additionally we've got repeating problems even with
> quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
>
> According to recommendation in guides and some talks on the Internet I tend
> to try database tuning or change. Could you please recommend a good
> candidate among freely available databases or even give a hints on HSQLDB
> tuning (maybe changing default memory mode to cached)? I've taken a look at
> H2 vs. HSQLDB comparison but there are quite controversial opinions...
>
> Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
> database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
> RAM. BTW, is this in general expected behavior for such configuration?
>
> Many thanks,
> Andrey
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
8:42 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
I forgot to say, on curriki.org, which is under very high demand, we use the Sun Java
Application server on solaris engines.
Using Glassfish is likely to give similar results.
paul
Le 13 févr. 2012 à 20:39, Paul Libbrecht a écrit :
As a personal experience, more based on habits, tomcat
is of real good quality most of the times.
Things like encoding must be cared for early... but that is easy to make.
i2geo.net is used quite commonly and runs tomcat 7 (with my own scripts... but I do not
think that makes a big difference).
paul
Le 13 févr. 2012 à 19:05, Sergiu Dumitriu a écrit :
On 02/13/2012 12:59 PM, 변형진 wrote:
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users I see that the performance using MySQL is better
than using HSQL.
But why does XWiki recommend to use Tomcat as WAS?
I have heard that Jetty is so efficient, lightweight and flexible that
it can replace Tomcat in many common cases.
So I'm playing with Nginx + configured XEM standalone package (Jetty +
MySQL) for prduction.
Does XWiki have the other reasons recommending Tomcat?
Personally I'm very happy with Jetty as well, and on the contrary, I'm unhappy
with some of the decisions taken by the Tomcat developers, which IMO looks like a legacy
project still sticking to last century's standards, for "backwards
compatibility". Sure, things can be configured, like switching to UTF-8 for parsing
the query string, or disabling the %2F security warning, but still we get a lot of bug
reports caused by these default settings and people not reading the installation guide for
Tomcat.
@WhyKesarr. MetaDeveloper.
"Keep the modifications due to a single change together in a predictable
range."
2012. 2. 14. 오전 2:31 "goldring, richard"
<richard.goldring(a)uk.thalesgroup.com> 작성:
> Hi Andrey,
>
> You're running using Jetty and HSQL? I had similar problems and eventually
> moved to Apache Tomcat and MySQL which are more memory efficient - suggest
> you to the same although I don't lnow if there is another way but I exported
> my pages to .xar files which I had to break into small .xar file in order to
> reimport into my new xwiki on Tomcat and MySql (I kept the two installations
> running until we were happy we had copied everything across ... This process
> wasn't easy!
>
> Hope that helps.
>
> Regards,
>
> Richard
>
> -----Original Message-----
> From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On Behalf Of
> Crowd Covered
> Sent: 13 February 2012 17:21
> To: users(a)xwiki.org
> Subject: [xwiki-users] Performance tuning for growing wiki
>
> Hi guys,
>
> Thanks again for great collaborative tool!
>
> We currently have about 1200 pages inside, many with objects, where several
> people search/read/edit info every day. And we are experiencing performance
> problems - at least once a day, sometimes more often wiki becomes
> unresponsive for 3-10 minutes while having high CPU load (my guess is either
> page file swapping or garbage collection by JVM), Out Of Memory errors
> becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes fails
> several times a day). Additionally we've got repeating problems even with
> quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
>
> According to recommendation in guides and some talks on the Internet I tend
> to try database tuning or change. Could you please recommend a good
> candidate among freely available databases or even give a hints on HSQLDB
> tuning (maybe changing default memory mode to cached)? I've taken a look at
> H2 vs. HSQLDB comparison but there are quite controversial opinions...
>
> Current servlet container configuration is -Xms700m -Xmx700m, no tuning for
> database, computer is a virtual machine on a farm with 2 GHz CPU and 1 Gb
> RAM. BTW, is this in general expected behavior for such configuration?
>
> Many thanks,
> Andrey
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users 
8:45 p.m.
New subject: [xwiki-users] Performance tuning for growing wiki
One of the reasons is that XWiki SAS has almost all it's XWiki deployments
using tomcat more by habit than anything else.
I'm also not sure when we started that jetty was primetime.
It's true that XWiki works with the most lightweight servlet engines so
jetty is probably as good as tomcat.
Ludovic
2012/2/13 변형진 <kesarr(a)kesarr.com>
I see that the performance using MySQL is better than
using HSQL.
But why does XWiki recommend to use Tomcat as WAS?
I have heard that Jetty is so efficient, lightweight and flexible that
it can replace Tomcat in many common cases.
So I'm playing with Nginx + configured XEM standalone package (Jetty +
MySQL) for prduction.
Does XWiki have the other reasons recommending Tomcat?
@WhyKesarr. MetaDeveloper.
"Keep the modifications due to a single change together in a predictable
range."
2012. 2. 14. 오전 2:31 "goldring, richard"
<richard.goldring(a)uk.thalesgroup.com> 작성:
--
Ludovic Dubost
Founder and CEO
Blog: http://blog.ludovic.org/
XWiki: http://www.xwiki.com
Skype: ldubost GTalk: ldubost
Hi Andrey,
You're running using Jetty and HSQL? I had similar problems and
eventually
moved to Apache Tomcat and MySQL which are more
memory efficient -
suggest
you to the same although I don't lnow if
there is another way but I
exported
my pages to .xar files which I had to break into
small .xar file in
order to
reimport into my new xwiki on Tomcat and MySql (I
kept the two
installations
running until we were happy we had copied
everything across ... This
process
wasn't easy!
Hope that helps.
Regards,
Richard
-----Original Message-----
From: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] On
Behalf Of
Crowd Covered
Sent: 13 February 2012 17:21
To: users(a)xwiki.org
Subject: [xwiki-users] Performance tuning for growing wiki
Hi guys,
Thanks again for great collaborative tool!
We currently have about 1200 pages inside, many with objects, where
several
people search/read/edit info every day. And we
are experiencing
performance
problems - at least once a day, sometimes more
often wiki becomes
unresponsive for 3-10 minutes while having high CPU load (my guess is
either
page file swapping or garbage collection by JVM),
Out Of Memory errors
becoming more often (sometimes wiki is stable for 1-2 weeks, sometimes
fails
several times a day). Additionally we've got
repeating problems even with
quite small attachments 500Kb-2Mb (I am aware of x27 DB storage trouble)
According to recommendation in guides and some talks on the Internet I
tend
to try database tuning or change. Could you
please recommend a good
candidate among freely available databases or even give a hints on HSQLDB
tuning (maybe changing default memory mode to cached)? I've taken a look
at
H2 vs. HSQLDB comparison but there are quite
controversial opinions...
Current servlet container configuration is -Xms700m -Xmx700m, no tuning
for
database, computer is a virtual machine on a farm
with 2 GHz CPU and 1 Gb
RAM. BTW, is this in general expected behavior for such configuration?
Many thanks,
Andrey
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
_______________________________________________
users mailing list
users(a)xwiki.org
http://lists.xwiki.org/mailman/listinfo/users
4697
days inactive
4697
days old
6 comments
6 participants
participants (6)
-
goldring, richard -
Ludovic Dubost -
Paul Libbrecht -
Sergiu Dumitriu -
Vincent Massol -
변형진