If you ever get to 100% you are in deep trouble. The following is from a previous post to IBM-MAIN
> To find out how the system thinks it is doing, look at SYSEVENT STGTEST in > the Authorized Assembler Reference manual. That gives you back two values, > three actually, but now the third is the same as the second. These values > are only updated once a second. > > There is also the RCEAFC that has the available frame count. The RCEPOOL has > the total number of frames for the LPAR. The RCEBELPL has the below the line > number and RCEABVPL has the above the line number. You have to derive the > above the bar (64-bit) pages. ABAR = RCEPOOL - RCEABVPL - RCEBELPL > > OK, the first value from the SYSEVENT is basically the available frame count > minus a machine configuration derived constant. > > The second value is basically the number of what I call under-utilized > frames. If a frame has a UIC count greater than the system target UIC, then > it is a candidate for stealing. This value includes the first value frame > count. > > IBM has been tight lipped about how they currently derive the values returned > by SYSEVENT STGTEST, so my comments are based on old knowledge and current > observations and taking my best guess. The other variable mentioned are > right from the System Data Areas manuals. There are other fields in the RCE and RCT that might be of interest. Look in the data areas manuals. From those control blocks you can get all kinds of information. Christopher Y. Blaicher Senior Software Developer Austin Development Lab phone: 512.340.6154 mobile: 512.627.3803 fax: 512.340.6647 10431 Morado Circle Austin, TX 78759 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Monika Amiss Sent: Tuesday, November 02, 2010 1:00 PM To: [email protected] Subject: physical memory usage Dear group, we have assigned 24GB of physical memory to our production LPAR. Is it possible to monitor how much percent of this physical memory is currently used (via Assembler). So, if paging is active this value should be over 100%. Any hint appreciated, with best regards Monika ---------------------------------------------------------------------- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
