Hi everybody 1.I divide my desktop(2 processors ,2G memory) into two VMs(each entirely owns 1 processor ,1G memory).Then I run two tasks simultaneously(task0,task1, they are independent to each other) on these two VMS,the time consumed is T0; 2.I run the same two tasks simultaneously straightly on the desktop,and the time consumed is T1. I found that T1 is always 2 times as T0.Is this result common or is there any papers(reports) illustrates this kind of question? many thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > 1.I divide my desktop(2 processors ,2G memory) into two VMs(eachentirely owns> 1 processor ,1G memory).Then I run two taskssimultaneously(task0,task1, they> are independent to each other) on these two VMS,the time consumed isT0;> > 2.I run the same two tasks simultaneously straightly on thedesktop,and the> time consumed is T1. > > I found that T1 is always 2 times as T0.Is this result common or isthere any> papers(reports) illustrates this kind of question? >If the two tasks are CPU bound and you half the amount of CPU you give to them (eg by running them on the same VM instead of separate VM''s) then you will roughly double the required runtime. Is that what you were doing in #2 or have I misunderstood? James _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users