Hi,
I'm using open sta ( http://www.opensta.org/ ) for web stress tests.
There is several ways to set up multithreaded tests using junit that
could be included in your build.
I had successfully used GoboUtils (http://groboutils.sourceforge.net/)
on another project.
MAG
On 6/15/06, Scott Battaglia <[EMAIL PROTECTED]> wrote:
> Marc,
>
> Can you provide me with your code to test the registry under load? I'll
> take a look at it. CAS uses a wrapper class to update the caches to
> make sure information is consistent. This may need to be tweaked.
>
> -Scott
>
> Scott Battaglia
> Application Developer, Architecture & Engineering Team
> Enterprise Systems and Services, Rutgers University
> v: 732.445.0097 | f: 732.445.5493 | [EMAIL PROTECTED]
>
>
>
> marc antoine garrigue wrote:
> > Hi,
> > I've set up a configuration for EhCacheTicketRegistry with ticket
> > replication between two cas instances for fail over/load balancing.
> > Please not that you'll need to get the very last version of ehcache 1.2.1RC
> > which "add a cache bootstrap mechanism. This is used to populate a cache
> > when it is first initialized. An abstract factory,
> > BootstrapCacheLoaderFactory has been defined along with an interface
> > BootstrapCacheLoader. The initial concrete implementations are for RMI, so
> > that a new cache entering a cluster gets bootstrapped from a randomly chosen
> > peer."
> >
> > Both asynchronous and synchronous replication passed the unit tests.
> > Under stress tests:
> > do while(true){log in, ask for a ST and validate it} on both instances,
> > some strange things happened:
> > -With asynchronous replication, the resulting caches are not the same, and
> > some tickets are never deleted. This means that a service ticket can be used
> > twice. I assume the same can occur with TGT with logout.
> > -With synchronous replication, both servers freeze after a couple of
> > seconds: a thread dump shows lots of locked threads.
> > I have tried:
> > -Both RMI/JNDI peer listeners
> > -Both manual and automatic peer discovery
> > -to add a couple of synchronized blocks in the EhCacheTicketRegistry
> > without any success...
> > I'm a little disappointed wondering if this is an Ehcache or CAS issue.
> > I've also write a JGroupsTicketRegistry implementation using the
> > DistributedHashTable which is currently deprecated.
> > This works under stress tests but with a significant performance lost
> > comparing to ehcache (about 4 times slower than ehcache), but I hadn't tuned
> > it.
> > I can provide the whole code and configuration if you are interested.
> > Hope this helps!
> > Best regards
> > Marc-Antoine Garrigue
> >
> >
> >
> >> -----Original Message-----
> >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> >> Behalf Of Stephen A. Cochran
> >> Sent: mercredi 14 juin 2006 19:50
> >> To: Yale CAS mailing list
> >> Subject: Re: TicketRegistry and Load Balancing / Failover
> >>
> >>
> >> On Jun 14, 2006, at 1:38 PM, Scott Battaglia wrote:
> >>
> >>
> >>> I probably just moved it :-)
> >>>
> >>> Its here:
> >>> http://developer.ja-sig.org/source/viewrep/jasig/cas3/core/src/main/
> >>> java/org/jasig/cas/ticket/registry/EhCacheTicketRegistry.java?r=1.2
> >>>
> >>> I don't remember where I put the configuration file example
> >>> though. The
> >>> EhCache web site should have details on configuring the ehcache.xml
> >>> file
> >>> for distributed caches.
> >>>
> >> Ok, I must have missed that one. I thought I looked at them all and
> >> kept finding deleted ones and a reference to a bug that said
> >> something didn't work ;)
> >>
> >> Will give it a try.
> >>
> >> Steve
> >> _______________________________________________
> >> Yale CAS mailing list
> >> [email protected]
> >> http://tp.its.yale.edu/mailman/listinfo/cas
> >>
> >
> > _______________________________________________
> > Yale CAS mailing list
> > [email protected]
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> >
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>
--
Best regards.
Marc-Antoine Garrigue
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