[opencms-dev] OpenCMS hangs under heavy load

[Joe Desbonnet]

You say it happens only when content is modified (write to database).
I wonder could it be a JDBC or database issue.

What database / version are you using? What JDBC driver? Also what
patch level of JDK 1.4.2 are you using? (I believe 1.4.2_08 is the
latest version).   Maybe try Java 1.5.0 and see if that makes any
difference.

How about the log files (webapps/opencms/WEB-INF/logs/opencms.log) --
any clues there?

Joe.


On 7/8/05, Mark Belanger <belanger at fluid.com> wrote:
> I mispoke.  I meant threads instead of processes.  Otherwise, the
> symptoms remain.  Furthermore, I should have clarified the fact that the
> system is a dual processor unit with 2.4Ghz processors and 2G of RAM.
> 
> It's killing us as we have to effectively shut down access to the site
> in order to republish any content.
> 
> 
> -MB
> 
> Joe Desbonnet wrote:
> > That's odd -- Tomcat would normally occupy just one process -- so if
> > there are two processes running perhaps a second instance of Tomcat
> > has been started somehow. I've seen this sort of thing before with
> > another application. Can you verify that both processes are running
> > Tomcat? If so can you think of any mechanism that would cause a second
> > instance of Tomcat to start?
> >
> > Joe.
> >
> >
> >
> > On 7/7/05, Mark Belanger <belanger at fluid.com> wrote:
> >
> >
> >>when the load is lower in the evening.  On a hang, what is normally a
> >>single Java process consuming about 50% of the CPU becomes two Java
> >>processes consuming ~25% each.  At this point, the load shoots up to 2+
> >>and the dynamic portions of the site become totally unresponsive for
> >>anywhere between 2 and 5 minutes.
> >>
> >
> >
> >
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> --
> _______________________________________________________________________
> Mark Belanger - belanger at fluid.com
>