z/VM large memory - Linux on System z More details are available at http://www-128.ibm.com/developerworks/linux/linux390/perf/tuning_pap_VM.html#vmlm
z/VM large memory This report analyzes the results observed with Linux guests running a database server under online transaction processing (OLTP) workload in a z/VM environment using a relatively large amount of main memory (80 GB) and then also overcommitting that memory. To test the z/VM memory management behavior, the memory was overcommitted up to a factor of two and the impact of the following z/VM memory management features were tested: VM Resource Manager Cooperative Memory Management (VMRMCMM), initially available with z/VM 5.2 (also known as CMM Version 1) Collaborative Memory Management Assist (CMMA), initially available with z/VM 5.3 (also known as CMM Version 2) These features were expected to improve the overall system performance in cases where the overall z/VM system is constrained for real storage. Dorothea Matthaue Linux on System z Information Development IBM Deutschland Entwicklung GmbH ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
