you may want to consider a MySQL best respponse connection algorithm such a=
s=20
MySQL LoadBalancingConnectionProxy.java (allocates multiple connections and=
selects which connection to use based on least response time)
or allocate a number of connections upfront with DBCP
http://commons.apache.org/dbcp/
ping offline for details=2C
Martin Gainty=20
______________________________________________=20
Verzicht und Vertraulichkeitanmerkung/Note de d=E9ni et de confidentialit=
=E9
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.
> Date: Thu=2C 3 Feb 2011 11:40:08 +0100
> Subject: Re: Monitoring production tomcat
> From: rosenberg.leon@gmail.com
> To: users@tomcat.apache.org
>=20
> There is clearly only one solution =3B-)
> http://moskito.anotheria.net
>=20
> Ok=2C advertisement aside=2C there are multiple=2C but moskito provides m=
ost
> information of all the available tools.
>=20
> Feel free to ask offlist too.
>=20
> regards
> Leon
>=20
> On Thu=2C Feb 3=2C 2011 at 10:57 AM=2C Adam Lipscombe
> <adam.lipscombe@gmail.com> wrote:
> >
> > Folks
> >
> >
> > We have a several production servers=2C each of which runs 1 instance o=
f
> > tomcat. Within each instance of tomcat there are approximately 10
> > virtual websites. Each virtual website runs a copy of our web app.
> > Therefore each server hosts @ 10 instances of our web app
> >
> > On a couple of the servers we are having problems with tomcat running
> > out of memory and sometimes dropping the JDBC link to the MYSQL databas=
e
> > etc.
> > We usually restart tomcat=2C which of course cures the issues. However =
doing
> > do affects every virtual site and therefore is not ideal from our custo=
mer's
> > perspective.
> >
> > We have been looking at this problem for some time=2C however it is ver=
y
> > difficult to determine what is causing these problems. Very likely some=
thing
> > in out webapp.
> >
> >
> > What would help is some kind of management or monitoring facility
> > that allows us to see which virtual site is getting into trouble.
> > Ideally it should give enough information to help us track down what is
> > causing the issue. Memory usage per site=2C thread view etc.
> >
> >
> > Can anyone recommend anything that can do this? Commercial or free?
> >
> >
> > Many thanks - Adam
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe=2C e-mail: users-unsubscribe@tomcat.apache.org
> > For additional commands=2C e-mail: users-help@tomcat.apache.org
> >
> >
>=20
> ---------------------------------------------------------------------
> To unsubscribe=2C e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands=2C e-mail: users-help@tomcat.apache.org
>=20
=
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