On 7/21/06, Alan Altmark <[EMAIL PROTECTED]> wrote:
Only multiple virtual CPUs. In a uniprocessor environment Linux shouldn't issue diag 44.
Right... if your virtual UP gets in a spinloop you must go and take it out yourself ;-)
Not a direct answer to your question, but for some information on the effects of z/VM 5.2 DIAG 44 Fast Path support, see http://www.vm.ibm.com/perf/reports/zvm/html/diag44.html. When combined with a reduction in diag 44s, you get a nice (technical term) performance improvement.
Those improvements in z/VM 5.2 would only apply to virtual n-way with n>2, isn't it? For n=2 that improvement was already with earlier releases. I have read that discussion several times but the "nice improvement" was not obvious to me. Rob -- Rob van der Heij Velocity Software, Inc http://velocitysoftware.com/ ---------------------------------------------------------------------- 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
