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Re: [libvirt] [PATCHv8 02/17] util: Introduce resctrl monitor for CMT




On 11/12/18 8:31 AM, Wang Huaqiang wrote:
> Cache Monitoring Technology (aka CMT) provides the capability
> to report cache utilization information of system task.
> 
> This patch introduces the concept of resctrl monitor through
> data structure virResctrlMonitor.
> 
> Signed-off-by: Wang Huaqiang <huaqiang wang intel com>
> ---
>  src/libvirt_private.syms |  1 +
>  src/util/virresctrl.c    | 80 ++++++++++++++++++++++++++++++++++++++++++++----
>  src/util/virresctrl.h    |  9 ++++++
>  3 files changed, 84 insertions(+), 6 deletions(-)
> 

[...]

>  
>  # util/virrotatingfile.h
> diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
> index 7339e9b..e3c84a3 100644
> --- a/src/util/virresctrl.c
> +++ b/src/util/virresctrl.c

[...]

> + *
> + * =====Cache monitoring technology (CMT)=====
> + *
> + * Cache monitoring technology is used to perceive how many cache the process
> + * is using actually. virResctrlMonitor represents the resource control
> + * monitoring group, it is supported to monitor resource utilization
> + * information on granularity of vcpu.
> + *
> + * From hardware perspective, cache monitoring technology (CMT), memory

>From a hardware

> + * bandwidth technology (MBM), as well as the CAT and MBA, are all orthogonal
> + * features. The monitor will be created under the scope of default resctrl
> + * group if no specific CAT or MBA entries are provided for the guest."
>   */

Reviewed-by: John Ferlan <jferlan redhat com>

John

[...]


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