From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: "Hunt, David" <david.hunt@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v1 0/10] Policy Based Power Control for Guest
Date: Tue, 29 Aug 2017 13:03:05 +0000 [thread overview]
Message-ID: <2601191342CEEE43887BDE71AB9772584F23D987@IRSMSX103.ger.corp.intel.com> (raw)
In-Reply-To: <1503676941-80981-1-git-send-email-david.hunt@intel.com>
Hi Dave,
> This patchset adds the facility for a guest VM to send a policy down to
> the host that will allow the host to scale up/down cpu frequencies
> depending on the policy criteria independently of the DPDK app running in
> the guest. This differs from the previous vm_power implementation where
> individual scale up/down requests were send from the guest to the host via
> virtio-serial.
>
> It's a modification of the vm_power_manager app that runs in the host, and
> the guest_vm_power_app example app that runs in the guest. This allows the
> guest to send down a policy to the host via virtio-serial, which then allows
> the host to scale up/down based on the criteria in the policy, resulting in
> quicker scale up/down than individual requests coming from the guest.
> It also means that the DPDK application running in the guest does not need
> to be modified in any way, it is unaware that it's cores are being scaled
> up/down, reducing the effort in implementing a power-aware infrastructure.
>
> The usage model is as follows:
> 1. Set up the VF's and assign to the guest in the usual way.
> 2. run vm_power_manager on the host, creating a channel to the guest.
> 3. Start the guest_vm_power_mgr app on the guest, which establishes
> a virtio-serial channel to the host.
> 4. Send down the profile for the guest using the "send_profile now" command.
> There is an example profile hard-coded into guest_vm_power_mgr.
> 5. Stop the guest_vm_power_mgr and run your normal power-unaware application.
> 6. Send traffic into the VFs at varying traffic rates.
> Observe the frequency change on the host (turbostat -i 1)
>
> The sequence of code changes are as follows:
>
> Firstly, two new API calls are added to the ethdev layer
> 1. One to convert a VF id to a PF id. In the patchset
> this id is a MAC address. This is needed so that the host can map the VFs
> in the profile to PF so in can monitor the traffic on the relevant PF at the
> host level.
> 2. The other function is to read the low-level traffic throughput on the NIC.
> Currently this API reads a NIC register for speed, but we are looking at
> using a more generic way to get these stats, suggestions welcome.
Why do you need a server (host) to collect RX/TX statistics for VM?
Such method seems to have a lot of limitations:
- no clear method to identify to which VM that VF belongs.
- rely on HW ability to provide such statistics for PF
(limited HW support).
- wouldn't work if PF is not controlled by the same DPDK app.
Why not to make it client(VM) responsibility to collect that statistics and
periodically send it to the server?
Then server just will have to process that data and make decision.
Konstantin
>
> Next we make an addition to librte_power that adds an extra command to allow
> the passing of a policy structure from the guest to the host. This struct
> contains information like busy/quiet hour, packet throughput thresholds, etc.
>
> The next addition adds functionality to convert the virtual CPU (vcpU0 IDs to
> physical CPU (pcpu) IDs so that the host can scale up/down the cores used
> in the guest.
>
> The remaining patches are functionality to process the policy, and take action
> when the relevant trigger occurs to cause a frequency change.
>
> [01/10] net/i40e: add API to convert VF Id to PF Id
> [02/10] net/i40e: add API to get received packet count
> [03/10] lib/librte_power: add extra msg type for policies
> [04/10] examples/vm_power_mgr: add vcpu to pcpu mapping
> [05/10] examples/vm_power_mgr: add scale to medium freq fn
> [06/10] examples/vm_power_mgr: add policy to channels
> [07/10] examples/vm_power_mgr: add port initialisation
> [08/10] examples/guest_cli: add send policy to host
> [09/10] examples/vm_power_mgr: set MAC address of VF
> [10/10] net/i40e: set register for no drop
next prev parent reply other threads:[~2017-08-29 13:03 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-25 16:02 David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 01/10] net/i40e: add API to convert VF Id to PF Id David Hunt
2017-09-22 9:56 ` Thomas Monjalon
2017-09-22 12:39 ` Hunt, David
2017-09-25 2:43 ` Wu, Jingjing
2017-09-25 9:57 ` Hunt, David
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 02/10] net/i40e: add API to get received packet count David Hunt
2017-09-25 2:47 ` Wu, Jingjing
2017-09-25 9:59 ` Hunt, David
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 03/10] lib/librte_power: add extra msg type for policies David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 04/10] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 05/10] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 06/10] examples/vm_power_mgr: add policy to channels David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 07/10] examples/vm_power_mgr: add port initialisation David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 08/10] examples/guest_cli: add send policy to host David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 09/10] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-08-25 16:02 ` [dpdk-dev] [PATCH v1 10/10] net/i40e: set register for no drop David Hunt
2017-09-25 2:50 ` Wu, Jingjing
2017-09-25 9:44 ` Hunt, David
2017-08-29 13:03 ` Ananyev, Konstantin [this message]
2017-09-22 9:51 ` [dpdk-dev] [PATCH v1 0/10] Policy Based Power Control for Guest Thomas Monjalon
2017-09-22 10:28 ` Hunt, David
2017-09-22 13:03 ` Thomas Monjalon
2017-09-22 13:12 ` Hunt, David
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2] " David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 1/8] net/i40e: add API to convert VF MAC to VSI index David Hunt
2017-09-26 14:04 ` Wu, Jingjing
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 2/8] lib/librte_power: add extra msg type for policies David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 3/8] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 4/8] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 5/8] examples/vm_power_mgr: add policy to channels David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 6/8] examples/vm_power_mgr: add port initialisation David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 7/8] examples/guest_cli: add send policy to host David Hunt
2017-09-25 12:27 ` [dpdk-dev] [PATCH v2 8/8] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4] Policy Based Power Control for Guest David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 1/9] net/i40e: add API to convert VF MAC to VF id David Hunt
2017-10-04 15:26 ` santosh
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 2/9] lib/librte_power: add extra msg type for policies David Hunt
2017-10-04 15:36 ` santosh
2017-10-05 8:38 ` Hunt, David
2017-10-05 9:21 ` santosh
2017-10-05 9:51 ` Hunt, David
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 3/9] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 4/9] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 5/9] examples/vm_power_mgr: add policy to channels David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 6/9] examples/vm_power_mgr: add port initialisation David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 7/9] power: add send channel msg function to map file David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 8/9] examples/guest_cli: add send policy to host David Hunt
2017-10-04 9:15 ` [dpdk-dev] [PATCH v4 9/9] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 0/9] Policy Based Power Control for Guest David Hunt
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 1/9] net/i40e: add API to convert VF MAC to VF id David Hunt
2017-10-04 15:41 ` santosh
2017-10-05 8:31 ` Hunt, David
2017-10-05 9:22 ` santosh
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 2/9] lib/librte_power: add extra msg type for policies David Hunt
2017-10-04 15:47 ` santosh
2017-10-05 8:41 ` Hunt, David
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 3/9] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-10-04 15:58 ` santosh
2017-10-05 8:44 ` Hunt, David
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 4/9] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-10-04 16:04 ` santosh
2017-10-05 8:47 ` Hunt, David
2017-10-05 9:07 ` santosh
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 5/9] examples/vm_power_mgr: add policy to channels David Hunt
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 6/9] examples/vm_power_mgr: add port initialisation David Hunt
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 7/9] power: add send channel msg function to map file David Hunt
2017-10-04 16:20 ` santosh
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 8/9] examples/guest_cli: add send policy to host David Hunt
2017-10-04 15:25 ` [dpdk-dev] [PATCH v5 9/9] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 0/9] Policy Based Power Control for Guest David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 1/9] net/i40e: add API to convert VF MAC to VF id David Hunt
2017-10-05 12:45 ` Ananyev, Konstantin
2017-10-05 12:51 ` Hunt, David
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 2/9] lib/librte_power: add extra msg type for policies David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 3/9] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 4/9] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 5/9] examples/vm_power_mgr: add policy to channels David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 6/9] examples/vm_power_mgr: add port initialisation David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 7/9] power: add send channel msg function to map file David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 8/9] examples/guest_cli: add send policy to host David Hunt
2017-10-05 12:25 ` [dpdk-dev] [PATCH v6 9/9] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 0/9] Policy Based Power Control for Guest David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 1/9] net/i40e: add API to convert VF MAC to VF id David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 2/9] lib/librte_power: add extra msg type for policies David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 3/9] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 4/9] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 5/9] examples/vm_power_mgr: add policy to channels David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 6/9] examples/vm_power_mgr: add port initialisation David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 7/9] power: add send channel msg function to map file David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 8/9] examples/guest_cli: add send policy to host David Hunt
2017-10-05 13:28 ` [dpdk-dev] [PATCH v7 9/9] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-05 13:54 ` [dpdk-dev] [PATCH v7 0/9] Policy Based Power Control for Guest Ananyev, Konstantin
2017-10-05 14:12 ` santosh
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 " David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 1/9] net/i40e: add API to convert VF MAC to VF id David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 2/9] lib/librte_power: add extra msg type for policies David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 3/9] examples/vm_power_mgr: add vcpu to pcpu mapping David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 4/9] examples/vm_power_mgr: add scale to medium freq fn David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 5/9] examples/vm_power_mgr: add policy to channels David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 6/9] examples/vm_power_mgr: add port initialisation David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 7/9] power: add send channel msg function to map file David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 8/9] examples/guest_cli: add send policy to host David Hunt
2017-10-05 14:34 ` [dpdk-dev] [PATCH v8 9/9] examples/vm_power_mgr: set MAC address of VF David Hunt
2017-10-09 22:34 ` [dpdk-dev] [PATCH v8 0/9] Policy Based Power Control for Guest Ferruh Yigit
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