Hi, We are observing an increase in VIRT and RES memory of tomcat6.0 which internally invokes our custom API is invoked (This API internally does an JNI call). The same API code when invoked through a standalone java process repeatedly does not lead to an increase in the VIRT /RES memory.
Is there any way this could be debugged further? Any hints would be really helpful. Please find the details of my test below. SETUP: ====== TOMCAT Version: tomcat6-6.0.35-1 OS: SUSE Linux Enterprise Server 11 (x86_64) JAVA: 1.6 (Max Heap memory for tomcat/standalone java proc 512MB) Tomcat Memory Growth: (We repeatedly invoked the servlet using a GET request) ===================== PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 26807 tomcat 20 0 1137m 156m 20m S 0 2.0 0:11.48 java -- 12:00PM April 10th 26807 tomcat 20 0 1316m 340m 22m S 171 4.3 5:10.71 java --- 12:31 PM April 10th 26807 tomcat 20 0 1862m 945m 20m S 167 11.8 54:04.52 java --- 1:00PM April 10th. 26807 tomcat 20 0 2076m 1.1g 20m S 171 13.7 65:54.73 java --- 1:07PM April 10th 26807 tomcat 20 0 2823m 1.8g 20m S 154 22.8 159:27.60 java -- 2:14PM April 10th 26807 tomcat 20 0 3296m 2.4g 13m S 173 30.4 217:13.22 java --- 2:49PM April 10th Standalone Java Process (This repeated invokes our API) ======================= PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 19585 root 20 0 11444 1516 1220 S 0 0.0 0:00.00 testClient -- at 2.36pm April 10th 19585 root 20 0 11444 1516 1220 S 0 0.0 0:00.00 testClient -- at 2.48 pm April 10th 19585 root 20 0 11444 1516 1220 S 0 0.0 0:00.00 testClient - at 2.55 pm April 10th 19585 root 20 0 11444 1516 1220 S 0 0.0 0:00.00 testClient - at 3:15 PM April 10th 19585 root 20 0 11444 1484 1188 S 0 0.0 0:00.00 testClient -- at 3.29 April 10th Note: In the Standalone Java Process we also tried to repeatedly invoked the API by creating new threads and every time. This too did not result in a VIRT/RES memory growth.... Please let me know if any additional details are required ... Thanks & Regards, Sandeep
