Re: Xen C-state Issues

2024-06-27 Thread Elliott Mitchell
On Thu, Aug 26, 2021 at 09:51:54AM +0200, Jan Beulich wrote: > On 26.08.2021 03:18, Elliott Mitchell wrote: > > > What you're writing about would be looking for bugs in development > > branches. > > Very much so, in case there are issues left, or ones have got > reintroduced. That's what the prim

Re: Xen C-state Issues

2021-08-26 Thread Jan Beulich
On 26.08.2021 03:18, Elliott Mitchell wrote: > On Tue, Aug 24, 2021 at 08:14:41AM +0200, Jan Beulich wrote: >> On 24.08.2021 07:37, Elliott Mitchell wrote: >>> On Mon, Aug 23, 2021 at 09:12:52AM +0200, Jan Beulich wrote: On 21.08.2021 18:25, Elliott Mitchell wrote: > ACPI C-state support m

Re: Xen C-state Issues

2021-08-25 Thread Elliott Mitchell
On Tue, Aug 24, 2021 at 08:14:41AM +0200, Jan Beulich wrote: > On 24.08.2021 07:37, Elliott Mitchell wrote: > > On Mon, Aug 23, 2021 at 09:12:52AM +0200, Jan Beulich wrote: > >> On 21.08.2021 18:25, Elliott Mitchell wrote: > >>> ACPI C-state support might not see too much use, but it does see some.

Re: Xen C-state Issues

2021-08-23 Thread Jan Beulich
On 24.08.2021 07:37, Elliott Mitchell wrote: > On Mon, Aug 23, 2021 at 09:12:52AM +0200, Jan Beulich wrote: >> On 21.08.2021 18:25, Elliott Mitchell wrote: >>> ACPI C-state support might not see too much use, but it does see some. >>> >>> With Xen 4.11 and Linux kernel 4.19, I found higher C-states

Re: Xen C-state Issues

2021-08-23 Thread Elliott Mitchell
On Mon, Aug 23, 2021 at 09:12:52AM +0200, Jan Beulich wrote: > On 21.08.2021 18:25, Elliott Mitchell wrote: > > ACPI C-state support might not see too much use, but it does see some. > > > > With Xen 4.11 and Linux kernel 4.19, I found higher C-states only got > > enabled for physical cores for wh

Re: Xen C-state Issues

2021-08-23 Thread Jan Beulich
On 21.08.2021 18:25, Elliott Mitchell wrote: > ACPI C-state support might not see too much use, but it does see some. > > With Xen 4.11 and Linux kernel 4.19, I found higher C-states only got > enabled for physical cores for which Domain 0 had a corresponding vCPU. > On a machine where Domain 0 ha

Xen C-state Issues

2021-08-21 Thread Elliott Mitchell
ACPI C-state support might not see too much use, but it does see some. With Xen 4.11 and Linux kernel 4.19, I found higher C-states only got enabled for physical cores for which Domain 0 had a corresponding vCPU. On a machine where Domain 0 has 5 vCPUs, but 8 reported cores, the additional C-state