RE: Memory leak in Tomcat 5.5.16

2010-05-04 Thread KT2010
Hello Tom, I am facing a similar issue. Could you please send that piece of code that was causing you this error, just that snippet should be good. Thanks Tom Price-3 wrote: > > Hi all, > > No more help required - I traced back all the references to the Request > objects and it did turn out

RE: Memory leak in Tomcat 5.5.16

2008-03-31 Thread Tom Price
Hi all, No more help required - I traced back all the references to the Request objects and it did turn out to be a bug in my application code. One of my tracing classes (written a long time ago, before we used Tomcat) was caching all created Thread objects. So when Tomcat decided to allocate ne

RE: Memory leak in Tomcat 5.5.16

2008-03-29 Thread Tom Price
Hi, I have now managed to do some analysis of the classes that are referencing the leaked objects, can anyone help me interpret these results? I got jmap/jhat working by upgrading to JRE 1.6.0_05, and took a heap dump at a time after a period of stress when all SOAP/XML connections had been close

RE: Memory leak in Tomcat 5.5.16

2008-03-28 Thread hai_vu
" To "Tomcat Users List" cc Subject RE: Memory leak in Tomcat 5.5.16 Christopher, Christopher Schultz wrote: > Have you been able to compare the numbers of those objects after, say, > 100 requests with the same object counts after, say, 1 requests? It > /i

Re: Memory leak in Tomcat 5.5.16

2008-03-28 Thread Mark Thomas
Tom Price I'm trying to find a tool that will show me which objects are holding onto references to these Tomcat objects, but haven't had much success so far - any suggestions gratefully received. Not free, but I use YourKit and get on very well with it. Mark -

RE: Memory leak in Tomcat 5.5.16

2008-03-27 Thread Tom Price
Christopher, Christopher Schultz wrote: > Have you been able to compare the numbers of those objects after, say, > 100 requests with the same object counts after, say, 1 requests? It > /is/ possible that Tomcat is leaking memory per connection, but very > unlikely given that thousands of serve

Re: Memory leak in Tomcat 5.5.16

2008-03-27 Thread Filip Hanik - Dev Lists
try to disable the cache in conf/catalina.properties, at the bottom there is a setting you can set to false tomcat.util.buf.StringCache.byte.enabled=true if the problem still exists, use jmap to dump the heap, and analyse the actual dependencies for mem usage Filip Tom Price wrote: Hi, I h

Re: Memory leak in Tomcat 5.5.16

2008-03-27 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tom, Tom Price wrote: | I have analyzed the heap usage on a | system where this memory leak has occurred, and I see that the following | classes take up most of the memory: [snip] | Does anyone know what could trigger the above classes to be leaked