Re: [kvm-devel] Guest Time Question

2007-10-16 Thread Kay Hayen
Hello Eddie, Am Montag 15 Oktober 2007 06:13:44 schrieb Dong, Eddie: That 0.1% kills me though. do you mean, that every 1 second, 1 will be 1ms off? And for every second thereafter, leaving me with 1 second drift after only 1000 seconds? Oh, that is not my intension :-( I just put a

Re: [kvm-devel] Guest Time Question

2007-10-16 Thread Dong, Eddie
Kay Hayen wrote: Hello Eddie, Am Montag 15 Oktober 2007 06:13:44 schrieb Dong, Eddie: That 0.1% kills me though. do you mean, that every 1 second, 1 will be 1ms off? And for every second thereafter, leaving me with 1 second drift after only 1000 seconds? Oh, that is not my intension :-(

Re: [kvm-devel] Guest Time Question

2007-10-14 Thread Dong, Eddie
That 0.1% kills me though. do you mean, that every 1 second, 1 will be 1ms off? And for every second thereafter, leaving me with 1 second drift after only 1000 seconds? Oh, that is not my intension :-( I just put a rought estimation here. In old Xen time, I know there are ~10-30 seconds

Re: [kvm-devel] Guest Time Question

2007-10-11 Thread Kay Hayen
Hello Dong and others, thanks for the replies. I was trying to get KVM up with latest kernel, but didn't immediately succeed. I have it built with the instructions from a previous reply and it seemed OK, but I haven't had a chance to try it out yet. As for testing the time shift: To us the

Re: [kvm-devel] Guest Time Question

2007-10-11 Thread Dong, Eddie
Kay Hayen wrote: Hello Dong and others, thanks for the replies. I was trying to get KVM up with latest kernel, but didn't immediately succeed. I have it built with the instructions from a previous reply and it seemed OK, but I haven't had a chance to try it out yet. As for testing the

Re: [kvm-devel] Guest Time Question

2007-10-08 Thread Dong, Eddie
[EMAIL PROTECTED] wrote: Hello, I am currently evaluating kvm for using it for an application where correct time is absolutely critical. We therefore normally use NTP on these machines to synchronize them with GPS time. For a virtual machine in my eyes that means, the host should be

Re: [kvm-devel] Guest Time Question

2007-10-06 Thread Kay Hayen
Hello, tanks you for the reply: Am Freitag 05 Oktober 2007 08:35:44 schrieb Izik Eidus: Kay Hayen wrote: So in FAQ and Wiki I didn't find how to make the guest use host time. Is that possible at all? For VMWare it is said that clock=pit would help, but that seemed to be no change. ok,

Re: [kvm-devel] Guest Time Question

2007-10-06 Thread Izik Eidus
Kay Hayen wrote: Hello, tanks you for the reply: Am Freitag 05 Oktober 2007 08:35:44 schrieb Izik Eidus: And given that the kernel wouldn't boot either (I guess I will have to wait for you to rebase on rc9, a lot of your patch got rejected there), I also have the question if the

Re: [kvm-devel] Guest Time Question

2007-10-05 Thread Izik Eidus
Kay Hayen wrote: So in FAQ and Wiki I didn't find how to make the guest use host time. Is that possible at all? For VMWare it is said that clock=pit would help, but that seemed to be no change. ok, as for now what you can do is run it with: -tdf -no-kvm-irqchip -no-acpi thanks.

[kvm-devel] Guest Time Question

2007-10-04 Thread Kay Hayen
Hello, I am currently evaluating kvm for using it for an application where correct time is absolutely critical. We therefore normally use NTP on these machines to synchronize them with GPS time. For a virtual machine in my eyes that means, the host should be synchronized and the guests just