OpenJDK process is consuming 3 times memory .

Rahul Kumar Singh rahul.singh at
Mon Mar 23 07:34:57 UTC 2015

Hi OpenJDK support team,

While upgrading Tomcat from tomcat 6(6.0.28) to tomcat 7 (7.0.54). the following problem happens. TOMCAT 7 (7.0.54) memory consumption increased about approx. 3 times compare to the existing tomcat 6 (6.0.28) memory consumption.

The underline JVM is

java version "1.7.0_09-icedtea"

OpenJDK Runtime Environment (rhel-2.3.3.el5.1-x86_64)

OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)

Tomcat 6.0.28 memory consumption MAP. RESIDENT MEMORY:300-400 MB Approx.

Tomcat 7.0.54 memory consumption MAP. RESIDENT MEMORY:900-1800 MB Approx.

Underline java platform is same(OpenJDK7) in both tomcat 6 and tomcat 7. Now question is that, why the memory consumption increased about 3 times in Tomcat 7.

Rahul Kumar Singh

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