It's called a native memory leak. Lots of things can cause it. Thread pools, asynci i/o are two areas where this can happen. See http://www-01.ibm.com/support/docview.wss?uid=swg21368248 Also http://www-01.ibm.com/support/docview.wss?uid=swg21373312
You may have to open a PMR to get IBM to assist. Marcy "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Mrohs, Ray Sent: Wednesday, June 23, 2010 7:46 AM To: LINUX-390@vm.marist.edu Subject: [LINUX-390] Memory use question Hi, I am experimentally minimizing the footprint of a SLES10 WebSphere 7 instance and seeing the following. Swap is to v-disk. top: Tasks: 120 total, 3 running, 117 sleeping, 0 stopped, 0 zombie Cpu(s): 5.3%us, 0.3%sy, 0.0%ni, 94.0%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2050776k total, 2041236k used, 9540k free, 120320k buffers Swap: 849964k total, 819676k used, 30288k free, 431684k cached rmf: Total memory size 2002MB Swap space size 830MB Total memory used 1507MB % Swap space used 96.4% Used for buffer 117MB Swap-in rate 1.233/s Used for shared 0MB Swap-out rate 0/s Used for cache 422MB Page-in rate 4.933/s Total free memory 7MB Page-out rate 35.888/s The cache number looks interesting because it remains large while swap space is being used up. This particular instance has been up for 30+ days, so maybe there is incremental swap space saturation over time? Ray Mrohs U.S. Department of Justice 202-307-6896 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
