I certainly don't have any insight into the problem, but even with a fairly simple application, I see Heap Memory errors on a fairly frequent basis. I can redploy the app no more than 2 or sometimes 3 times before I will run out of heap space, and if I use the app for a while, it will just spontaneously combust, even if it is the first deployment. To be honest, the problem makes me VERY nervous, although not yet enough to do any serious invesitgation.
--sam On 7/11/06, Jesse Kuhnert <[EMAIL PROTECTED]> wrote:
Don't have an answer for you right now (at least not one that isn't one of 20 different possibilities), but I'll try and take a peak at the ognl cache service tonight and make sure I don't see anything that might be holding on to references when it shouldn't. On 7/11/06, Henri Dupre <[EMAIL PROTECTED]> wrote: > > Our website based on tapestry 4 seems to be out of memory and is crashing > every few days no matter what -Xmx I set. It is actually not that bad, > with > some scripts we get the website restarted within minutes in case of crash. > I've been investigating the source of this issue lately using the new Jhat > and Jmap tools of the JDK 1.6. > Most of the memory seems to be HashMap$Entry objects which I believe are > keys to most caches in the app (especially ehcache). > But what was surprising is the number of instances of tapestry components. > About 11000 pagelinks and roughly the same amount for IfBean and other > components after less than 1 day of execution. With jhat I've been able to > trace the origins of these components and they originate from > ExpressionBinding (72000 instances). > I'm not that familiar with the lifecycle of tapestry components but I'm > curious to understand why has tapestry created so many instances? > And given the numbers of instances, I'm wondering if Tapestry shouldn't > have > limits on its caches? > Would it improve the memory usage if I use cycle.forgetPage(...) for every > page? > > -- > Thanks, > > Henri. > > -- Jesse Kuhnert Tacos/Tapestry, team member/developer Open source based consulting work centered around dojo/tapestry/tacos/hivemind.
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