I have questions about memory usage of Java/WO apps. One of our apps had good old "out of memory" error. While looking at how much system memory the app was using, I saw another app that was using 1 GB of resident memory!
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2362 appserve 25 0 1922m 1.0g 9264 S 0.0 17.6 0:56.45 java But what's strange is that app is using the default memory settings, we are not using the -Xmx arguments, so I don't understand why this app can, according to Linux, be using 1 GB of RAM when it should stop when it reaches 64 MB. I tried some Googling and I didn't find any info that the maximum is higher than 64 MB for Java 6 but maybe I was searching for the wrong thing. CentOS release 5.5 (Final) x86_64 java version "1.6.0_20" Java(TM) SE Runtime Environment (build 1.6.0_20-b02) Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
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