Re: Number of webapps

[revas <re...@gmail.com>]

HI,

How do i get the info on the current setting of MaxPermSize?

Regards
Sujahta

On 2/27/09, Alexander Ramos Jardim <al...@gmail.com> wrote:
>
> Another simple solution for your requirement is to use multicore. This way
> you will have only one Solr webapp loaded with as many indexes as you need.
>
> See more at http://wiki.apache.org/solr/MultiCore
>
> 2009/2/25 Michael Della Bitta <md...@gmail.com>
>
> > Unfortunately, I think the way this works is the container creates a
> > Classloader for each context and loads the contents of the .war into
> > that, regardless of whether each context references the same .war
> > file. All those classes are stored in permanent generation space, and
> > I'm fairly sure if you restart a context individually with the manager
> > application, a new ClassLoader for the context is created and the
> > permanent generation space the old one was consuming is simply leaked.
> >
> > Something that is crazy enough to work might be to unpack the Solr
> > .war and move all the .jar files and class files that don't contain
> > servlet API classes to .jars in $TOMCAT_HOME/lib, and then repack the
> > .war without these files. These would then be loaded by the common
> > classloader once per container, instead of once per context. You can
> > read more about this classloader business here:
> > http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html (might
> > need a different URL depending on the version of Tomcat you're
> > running).
> >
> > Michael
> >
> > On Wed, Feb 25, 2009 at 11:42 AM, revas <re...@gmail.com> wrote:
> > > thanks will try that .I also have the war file for each solr instance
> in
> > the
> > > home directory of the instance ,would that be the problem ?
> > >
> > > if i were to have common war file for n instances ,would there be any
> > issue?
> > >
> > > regards
> > > revas
> > >
> > > On 2/25/09, Michael Della Bitta <md...@gmail.com> wrote:
> > >>
> > >> It's possible I don't know enough about Solr's internals and there's a
> > >> better solution than this, and it's surprising me that you're running
> > >> out of PermGen space before you're running out of heap, but maybe
> > >> you've already increased the general heap size without tweaking
> > >> PermGen, and loading all the classes involved in loading 20 contexts
> > >> is putting you over. In any case, you might try adding the following
> > >> option to CATALINA_OPTS: -XX:MaxPermSize=256m. If you don't know where
> > >> to put something like that, you might try adding the following line to
> > >> $TOMCAT_HOME/bin/startup.sh:
> > >>
> > >> export CATALINA_OPTS="-XX:MaxPermSize=256m ${CATALINA_OPTS}"
> > >>
> > >> If that value (256) doesn't alleviate the problem, you might try
> > increasing
> > >> it.
> > >>
> > >> Hope that helps,
> > >>
> > >> Michael Della Bitta
> > >>
> > >>
> > >> On Wed, Feb 25, 2009 at 3:08 AM, revas <re...@gmail.com> wrote:
> > >> > Hi
> > >> >
> > >> > I am sure this question has been repeated many times over and there
> > has
> > >> been
> > >> > several generic answers ,but i am looking for specific answers.
> > >> >
> > >> > I have a single server whose configuration i give below,this being
> the
> > >> only
> > >> > server we have at present ,the requirement is everytime we create a
> > new
> > >> > website ,we create two instances for the same one for content search
> > and
> > >> one
> > >> > for product search ,both have faceting requirements.
> > >> >
> > >> > there are about 25 fields for product schema and abt 20 for content
> > >> schema
> > >> > ,we do not store the content in the server ,the content is only
> > indexed.
> > >> >
> > >> > Assuming that we currently have 10 websites ,which means we have 20
> > >> webapps
> > >> > running on this server each having about 1000 documents  and size of
> > the
> > >> > index is approximately 50mb currently .The index size of each is
> > expected
> > >> to
> > >> > grow continlously as more products are added.
> > >> >
> > >> >
> > >> > We recenlty got the followng error on creation of a new webapp ?
> > >> >    SEVERE: Caught exception (java.lang.OutOfMemoryError: PermGen
> > space)
> > >> > executing
> > org.apache.tomcat.util.net.LeaderFollowerWorkerThread@1c2534f,
> > >> > terminating thread
> > >> > Feb 24, 2009 6:22:16 AM
> > >> > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run
> > >> > SEVERE: Caught exception (java.lang.OutOfMemoryError: PermGen space)
> > >> > executing
> > org.apache.tomcat.util.net.LeaderFollowerWorkerThread@1c2534f,
> > >> > terminating thread
> > >> >  Sent at 12:32 PM on Wednesday
> > >> >
> > >> >    What would this mean?Given the above,How many such webapps can we
> > have
> > >> > on this server?
> > >> >
> > >> > *Server config*
> > >> >
> > >> > OS: Red Hat Enterprise Linux ES 4 - 64 Bit
> > >> > # Processor: Dual AMD Opteron Dual Core 270 2.0 GHz
> > >> > # 4GB DDR RAM
> > >> > # Hard Drive: 73GB SCSI
> > >> > # Hard Drive: 73GB SCSI
> > >> >
> > >> > thanks
> > >> >
> > >>
> > >
> >
>
>
>
> --
> Alexander Ramos Jardim
>