> Last time I tried 3rd level guests it was fairly painful not sure what subsystem to blame. Not that I'm a z/VM guru by any means, but ... I have found the peformance of 3rd level Linux systems to be anywhere from perfectly acceptable to lethargic/downright annoying. When I'm on a system that is approaching annoying I will often do a "top". Now that the steal percentage (%st) is reported, the values can be very telling. I will see steal rates in the 70-85% range. As I understand it from people who are z/VM gurus, this happens when the system is doing a lot of I/O and the third level guest has to go in and out of SIE constantly. On second level Linux systems, the steal percentage usually maxes out in the mid-single-digits.
"Mike MacIsaac" <mike...@us.ibm.com> (845) 433-7061
