> > It could be that the hypercalls needed by xenpm > aren't properly > handled by the dom0 kernel interface. The power > management code isn't > something we have been using on our dom0 so far. > I'll have a look at it. > checked, and there are indeed some power management > hypercalls that > ren't handled. > > These are easy enough to implement, but the PM > interface also needs some > hooks in the dom0 ACPI code to inform Xen about CPU > PM capabilities. > Since we don't have those hooks, adding support for > the hypercalls isn't > going to help. > > I'll have a peek at what it takes to support the PM > interface, but I > wouldn't expect support for it soon, since it's > probably not a priority. > > - Frank > > _______________________________________________ > xen-discuss mailing list > [email protected]
Frank, thank you for looking into this. With regard to priorities, I am afraid I disagree. I can see Xen is working fairly stable, whilst however tons of carbon dioxide are sent into the atmosphere every hour without need, because there are thousands of workstations and servers running idle and using power that they should not to. I see that you are working for Sun, and assuming you live in the US, this is against EPA regulations. Assuming that you live on this planet and that you do take seriously your responsibilities towards the pollution of our atmosphere, your responsibilities are even greater when you have the power to prioritize on a tool that can potentially have a great impact on the quality of everyone's life. Just to put the impact into perspective, an average dual core Opteron utilizes 95Watts hour, but through power management it can save up to 50Watts per hour. an average server or high end workstation have two processors. 50W hour x 2 = 100W hour x 24 = 2400W or 2.4 Kilowatts In 30 days such server or workstation will consume 72 Kilowatts more than what it should have. OpenSolaris and Solaris are distributed to a large user base. For 10.000 installations this would mean 24 Megawatts every month. 100.000 installations mean 240 Megawatts and tons of carbon dioxide into the atmosphere that could have been saved. Now do you still think that handling power management is not a priority? -- This message posted from opensolaris.org _______________________________________________ xen-discuss mailing list [email protected]
