Hi, I have a Java application that exposes a web services (SOAP/XML) interface using Apache Tomcat and Axis2 (see detailed background below). When this interface is heavily utilized, the application gradually leaks old space memory until it runs out. 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:
Size Count Class description ------------------------------------------------------- 433059616 557692 char[] 292410472 124245 byte[] 17801560 87232 * ConstMethodKlass 16543576 295421 org.apache.tomcat.util.buf.MessageBytes 15600840 390021 org.apache.tomcat.util.buf.ByteChunk 13372920 334323 org.apache.tomcat.util.buf.CharChunk 11575656 482319 java.lang.String Does anyone know what could trigger the above classes to be leaked in Tomcat 5.5.16? I have also tried upgrading to Tomcat 5.5.26, but the problem still occurs. This is very similar to a memory leak posted to this list in 2006, but I can't find what the resolution was in that case: http://readlist.com/lists/tomcat.apache.org/users/5/27073.html I have also consulted http://wiki.apache.org/tomcat/OutOfMemory but couldn't find the solution. The problem only seems to occur when multiple concurrent requests are being received - if I issue requests in a single threaded manner, the server can handle many hundreds of thousands of requests over an extended period without any apparent memory leakage. But if multiple requests are sent concurrently, the application leaks about 1MB per 100 requests. Here are the details of the application: OS: Solaris 10 (Intel) JRE: 1.5.0_07, launched from native C code (not the Java executable) Tomcat: 5.5.16, embedded within my Java application Axis2: 1.3 Thanks in advance for any help. Tom. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
