Hi, I am not a current S/390 customer, but when I was I spent quite some time together with Rob vd Heij analysing VSwitch performance and the workings of the virtualised instructions (none of them published by IBM) that go with them. At that time (z/VM 5.3 ish) those instructions needed to massage the queues were the major cause of performance limitations of VSwitch that made us go with dedicated OSA bundles to Linux guests (in our case TSM) that needed them.
Rob may still have the numbers. I don't as I lost the S/390 installation. best regards, Pieter Harder ________________________________________ Van: Linux on 390 Port [LINUX-390@VM.MARIST.EDU] namens Barton Robinson [bar...@velocitysoftware.com] Verzonden: zondag 30 oktober 2011 19:26 Aan: LINUX-390@VM.MARIST.EDU Onderwerp: Re: z/VM Switch performance Re performance, there has been no need to change time slice since qdio, about 5 years ago. Brabant Water N.V. Postbus 1068 5200 BC 's-Hertogenbosch http://www.brabantwater.nl Handelsregister: 16005077 ---------------------------------------------------------------------- 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/
