Hi Ray. I tried your script on some of my images. Works fine, except when Oracle is involved. linux62:~ # ps -eo pmem | awk '{pmem += $1};END {print "pmem ="pmem"%"}'; pmem =1347.1% I do have a lot of swap blocks allocated. This is due to a batch type run, that is run off hours. During the day, when users are on, we swap very little. So if this does include swap pages, I don't think the script would give me what I need, during normal processing. Do you agree? Or am off track here? Thanks Tom Duerbusch THD Consulting
>>> "Mrohs, Ray" <ray.mr...@usdoj.gov> 7/23/2010 1:45 PM >>> Start up all your Linux procs and then run this little script. #! /bin/sh ps -eo pmem | awk '{pmem += $1}; END {print "pmem = "pmem"%"}'; It will give you a ballpark percentage of current memory utilization. I tuned some Apache/ftp servers down to 100M with no ill effects. Ray Mrohs U.S. Department of Justice 202-307-6896 > -----Original Message----- > From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On > Behalf Of Bruce Furber > Sent: Friday, July 23, 2010 11:01 AM > To: LINUX-390@VM.MARIST.EDU > Subject: Reducing Linux virtual machine size > > Can someone recommend a how to procedure for monitoring a > zLinux machine to determine how much to reduce a machines > virtual memory? > > Getting permission to schedule time to log a machines off is > very difficult so I have to be confident I have it right. > > ---------------------------------------------------------------------- > 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/ ---------------------------------------------------------------------- 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/