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From: Neil Horman <nhorman@tuxdriver.com>
To: Alan Carew <alan.carew@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3 00/10] VM Power Management
Date: Mon, 29 Sep 2014 13:29:41 -0400
Message-ID: <20140929172941.GI26483@hmsreliant.think-freely.org> (raw)
In-Reply-To: <1412003903-9061-1-git-send-email-alan.carew@intel.com>

On Mon, Sep 29, 2014 at 04:18:13PM +0100, Alan Carew wrote:
> Virtual Machine Power Management.
> 
> The following patches add two DPDK sample applications and an alternate
> implementation of librte_power for use in virtualized environments.
> The idea is to provide librte_power functionality from within a VM to address
> the lack of MSRs to facilitate frequency changes from within a VM.
> It is ideally suited for Haswell which provides per core frequency scaling.
> 
> The current librte_power affects frequency changes via the acpi-cpufreq
> 'userspace' power governor, accessed via sysfs.
> 
> General Overview:(more information in each patch that follows).
> The VM Power Management solution provides two components:
> 
>  1)VM: Allows for the a DPDK application in a VM to reuse the librte_power
>  interface. Each lcore opens a Virto-Serial endpoint channel to the host,
>  where the re-implementation of librte_power simply forwards the requests for
>  frequency change to a host based monitor. The host monitor itself uses
>  librte_power.
>  Each lcore channel corresponds to a
>  serial device '/dev/virtio-ports/virtio.serial.port.poweragent.<lcore_num>'
>  which is opened in non-blocking mode.
>  While each Virtual CPU can be mapped to multiple physical CPUs it is
>  recommended that each vCPU should be mapped to a single core only.
> 
>  2)Host: The host monitor is managed by a CLI, it allows for adding qemu/KVM
>  virtual machines and associated channels to the monitor, manually changing
>  CPU frequency, inspecting the state of VMs, vCPU to pCPU pinning and managing
>  channels.
>  Host channel endpoints are Virto-Serial endpoints configured as AF_UNIX file
>  sockets which follow a specific naming convention
>  i.e /tmp/powermonitor/<vm_name>.<channel_number>,
>  each channel has an 1:1 mapping to a VM endpoint
>  i.e. /dev/virtio-ports/virtio.serial.port.poweragent.<lcore_num>
>  Host channel endpoints are opened in non-blocking mode and are monitored via epoll.
>  Requests over each channel to change frequency are forwarded to the original
>  librte_power.
>  
> Channels must be manually configured as qemu-kvm command line arguments or
> libvirt domain definition(xml) e.g.
> <controller type='virtio-serial' index='0'>
>  <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
> </controller>
> <channel type='unix'>
>   <source mode='bind' path='/tmp/powermonitor/<vm_name>.<channel_num>'/>
>   <target type='virtio' name='virtio.serial.port.poweragent.<channel_num>/>
>   <address type='virtio-serial' controller='0' bus='0' port='<N>'/>
> </channel>
> 
> Where multiple channels can be configured by specifying multiple <channel>
> elements, by replacing <vm_name>, <channel_num>.
> <N>(port number) should be incremented by 1 for each new channel element.
> More information on Virtio-Serial can be found here:
> http://fedoraproject.org/wiki/Features/VirtioSerial
> To enable the Hypervisor creation of channels, the host endpoint directory
> must be created with qemu permissions:
> mkdir /tmp/powermonitor
> chown qemu:qemu /tmp/powermonitor
> 
> The host application runs on two separate lcores:
> Core N) CLI: For management of Virtual Machines adding channels to Monitor thread,
>  inspecting state and manually setting CPU frequency [PATCH 02/09]
> Core N+1) Monitor Thread: An epoll based infinite loop that waits on channel events
>  from VMs and calls the corresponding librte_power functions.
> 
> A sample application is also provided to run on Virtual Machines, this
> application provides a CLI to manually set the frequency of a 
> vCPU[PATCH 08/09]
> 
> The current l3fwd-power sample application can also be run on a VM.
> 
> Changes in V3:
>  Fixed crash in Guest CLI when host application is not running.
>  Renamed #defines to be more specific to the module they belong
>  Added vCPU pinning via CLI
>  Testing feedback
> 
> Changes in V2:
>  Runtime selection of librte_power implementations.
>  Updated Unit tests to cover librte_power changes.
>  PATCH[0/3] was sent twice, again as PATCH[0/4]
>  Miscellaneous fixes.
> 
> Alan Carew (10):
>   Channel Manager and Monitor for VM Power Management(Host).
>   VM Power Management CLI(Host).
>   CPU Frequency Power Management(Host).
>   VM Power Management application and Makefile.
>   VM Power Management CLI(Guest).
>   VM communication channels for VM Power Management(Guest).
>   librte_power common interface for Guest and Host
>   Packet format for VM Power Management(Host and Guest).
>   Build system integration for VM Power Management(Guest and Host)
>   VM Power Management Unit Tests
> 
>  app/test/Makefile                                  |   3 +-
>  app/test/autotest_data.py                          |  26 +
>  app/test/test_power.c                              | 445 +-----------
>  app/test/test_power_acpi_cpufreq.c                 | 544 ++++++++++++++
>  app/test/test_power_kvm_vm.c                       | 308 ++++++++
>  examples/vm_power_manager/Makefile                 |  57 ++
>  examples/vm_power_manager/channel_manager.c        | 804 +++++++++++++++++++++
>  examples/vm_power_manager/channel_manager.h        | 314 ++++++++
>  examples/vm_power_manager/channel_monitor.c        | 228 ++++++
>  examples/vm_power_manager/channel_monitor.h        | 102 +++
>  examples/vm_power_manager/guest_cli/Makefile       |  56 ++
>  examples/vm_power_manager/guest_cli/main.c         |  87 +++
>  examples/vm_power_manager/guest_cli/main.h         |  52 ++
>  .../guest_cli/vm_power_cli_guest.c                 | 155 ++++
>  .../guest_cli/vm_power_cli_guest.h                 |  55 ++
>  examples/vm_power_manager/main.c                   | 113 +++
>  examples/vm_power_manager/main.h                   |  52 ++
>  examples/vm_power_manager/power_manager.c          | 244 +++++++
>  examples/vm_power_manager/power_manager.h          | 188 +++++
>  examples/vm_power_manager/vm_power_cli.c           | 669 +++++++++++++++++
>  examples/vm_power_manager/vm_power_cli.h           |  47 ++
>  lib/librte_power/Makefile                          |   3 +-
>  lib/librte_power/channel_commands.h                |  77 ++
>  lib/librte_power/guest_channel.c                   | 162 +++++
>  lib/librte_power/guest_channel.h                   |  89 +++
>  lib/librte_power/rte_power.c                       | 540 ++------------
>  lib/librte_power/rte_power.h                       | 120 ++-
>  lib/librte_power/rte_power_acpi_cpufreq.c          | 545 ++++++++++++++
>  lib/librte_power/rte_power_acpi_cpufreq.h          | 192 +++++
>  lib/librte_power/rte_power_common.h                |  39 +
>  lib/librte_power/rte_power_kvm_vm.c                | 135 ++++
>  lib/librte_power/rte_power_kvm_vm.h                | 179 +++++
>  32 files changed, 5718 insertions(+), 912 deletions(-)
>  create mode 100644 app/test/test_power_acpi_cpufreq.c
>  create mode 100644 app/test/test_power_kvm_vm.c
>  create mode 100644 examples/vm_power_manager/Makefile
>  create mode 100644 examples/vm_power_manager/channel_manager.c
>  create mode 100644 examples/vm_power_manager/channel_manager.h
>  create mode 100644 examples/vm_power_manager/channel_monitor.c
>  create mode 100644 examples/vm_power_manager/channel_monitor.h
>  create mode 100644 examples/vm_power_manager/guest_cli/Makefile
>  create mode 100644 examples/vm_power_manager/guest_cli/main.c
>  create mode 100644 examples/vm_power_manager/guest_cli/main.h
>  create mode 100644 examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
>  create mode 100644 examples/vm_power_manager/guest_cli/vm_power_cli_guest.h
>  create mode 100644 examples/vm_power_manager/main.c
>  create mode 100644 examples/vm_power_manager/main.h
>  create mode 100644 examples/vm_power_manager/power_manager.c
>  create mode 100644 examples/vm_power_manager/power_manager.h
>  create mode 100644 examples/vm_power_manager/vm_power_cli.c
>  create mode 100644 examples/vm_power_manager/vm_power_cli.h
>  create mode 100644 lib/librte_power/channel_commands.h
>  create mode 100644 lib/librte_power/guest_channel.c
>  create mode 100644 lib/librte_power/guest_channel.h
>  create mode 100644 lib/librte_power/rte_power_acpi_cpufreq.c
>  create mode 100644 lib/librte_power/rte_power_acpi_cpufreq.h
>  create mode 100644 lib/librte_power/rte_power_common.h
>  create mode 100644 lib/librte_power/rte_power_kvm_vm.c
>  create mode 100644 lib/librte_power/rte_power_kvm_vm.h
> 
> -- 
> 1.9.3
> 
> 
This all seems to be reasonable.  Thanks
Acked-by: Neil Horman <nhorman@tuxdriver.com>

  parent reply	other threads:[~2014-09-29 17:23 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-22 18:34 [dpdk-dev] [PATCH " Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 01/10] Channel Manager and Monitor for VM Power Management(Host) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 02/10] VM Power Management CLI(Host) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 03/10] CPU Frequency Power Management(Host) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 04/10] " Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 05/10] VM communication channels for VM Power Management(Guest) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 06/10] Alternate implementation of librte_power " Alan Carew
2014-09-22 19:17   ` Neil Horman
2014-09-23  7:48     ` Carew, Alan
2014-09-22 18:34 ` [dpdk-dev] [PATCH 07/10] Packet format for VM Power Management(Host and Guest) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 08/10] Build system integration for VM Power Management(Guest and Host) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 09/10] VM Power Management Unit Tests(Guest) Alan Carew
2014-09-22 18:34 ` [dpdk-dev] [PATCH 10/10] VM Power Management CLI(Guest) Alan Carew
2014-09-24 17:26 ` [dpdk-dev] [PATCH v2 00/10] VM Power Management Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 01/10] Channel Manager and Monitor for VM Power Management(Host) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 02/10] VM Power Management CLI(Host) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 03/10] CPU Frequency Power Management(Host) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 04/10] VM Power Management application and Makefile Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 05/10] VM Power Management CLI(Guest) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 06/10] VM communication channels for VM Power Management(Guest) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 07/10] librte_power common interface for Guest and Host Alan Carew
2014-09-25 10:10     ` Neil Horman
2014-09-25 17:06       ` Carew, Alan
2014-09-25 17:49         ` Neil Horman
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 08/10] Packet format for VM Power Management(Host and Guest) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 09/10] Build system integration for VM Power Management(Guest and Host) Alan Carew
2014-09-24 17:26   ` [dpdk-dev] [PATCH v2 10/10] VM Power Management Unit Tests Alan Carew
2014-09-25  2:56   ` [dpdk-dev] [PATCH v2 00/10] VM Power Management Liu, Yong
2014-09-29 15:18   ` [dpdk-dev] [PATCH v3 " Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 01/10] Channel Manager and Monitor for VM Power Management(Host) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 02/10] VM Power Management CLI(Host) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 03/10] CPU Frequency Power Management(Host) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 04/10] VM Power Management application and Makefile Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 05/10] VM Power Management CLI(Guest) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 06/10] VM communication channels for VM Power Management(Guest) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 07/10] librte_power common interface for Guest and Host Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 08/10] Packet format for VM Power Management(Host and Guest) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 09/10] Build system integration for VM Power Management(Guest and Host) Alan Carew
2014-09-29 15:18     ` [dpdk-dev] [PATCH v3 10/10] VM Power Management Unit Tests Alan Carew
2014-09-29 17:29     ` Neil Horman [this message]
2014-10-12 19:36     ` [dpdk-dev] [PATCH v4 00/10] VM Power Management Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 01/10] Channel Manager and Monitor for VM Power Management(Host) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 02/10] VM Power Management CLI(Host) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 03/10] CPU Frequency Power Management(Host) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 04/10] VM Power Management application and Makefile Alan Carew
2014-10-16 18:28         ` De Lara Guarch, Pablo
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 05/10] VM Power Management CLI(Guest) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 06/10] VM communication channels for VM Power Management(Guest) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 07/10] librte_power common interface for Guest and Host Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 08/10] Packet format for VM Power Management(Host and Guest) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 09/10] Build system integration for VM Power Management(Guest and Host) Alan Carew
2014-10-12 19:36       ` [dpdk-dev] [PATCH v4 10/10] VM Power Management Unit Tests Alan Carew
2014-10-13  6:17       ` [dpdk-dev] [PATCH v4 00/10] VM Power Management Liu, Yong
2014-10-13 20:26       ` Thomas Monjalon
2014-10-14 12:37         ` Carew, Alan
2014-10-14 15:03           ` Thomas Monjalon
2014-10-16 15:21             ` Carew, Alan
2014-10-28 15:21               ` Thomas Monjalon
2014-11-10  9:05                 ` Carew, Alan
2014-11-10 17:54                   ` O'driscoll, Tim
2014-11-21 23:51                     ` Zhu, Heqing
2014-11-22 17:17                     ` Vincent JARDIN
2014-12-09 17:35                       ` Paolo Bonzini
2014-12-11 23:18                         ` Thomas Monjalon
2014-12-12 13:00                           ` Carew, Alan
2014-12-12 14:50                             ` Paolo Bonzini
2014-12-12 16:10                               ` Thomas Monjalon
2014-12-12 16:13                                 ` Paolo Bonzini
2014-11-21 17:42       ` [dpdk-dev] [PATCH v5 00/10] Virtual Machine " Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 01/10] Channel Manager and Monitor for VM Power Management(Host) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 02/10] VM Power Management CLI(Host) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 03/10] CPU Frequency Power Management(Host) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 04/10] VM Power Management application and Makefile Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 05/10] VM Power Management CLI(Guest) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 06/10] VM communication channels for VM Power Management(Guest) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 07/10] librte_power common interface for Guest and Host Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 08/10] Packet format for VM Power Management(Host and Guest) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 09/10] Build system integration for VM Power Management(Guest and Host) Pablo de Lara
2014-11-21 17:42         ` [dpdk-dev] [PATCH v5 10/10] VM Power Management Unit Tests Pablo de Lara
2014-11-25 16:18         ` [dpdk-dev] [PATCH v6 00/10] Virtual Machine Power Management Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 01/10] Channel Manager and Monitor for VM Power Management(Host) Pablo de Lara
2014-11-29 15:21             ` Neil Horman
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 02/10] VM Power Management CLI(Host) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 03/10] CPU Frequency Power Management(Host) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 04/10] VM Power Management application and Makefile Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 05/10] VM Power Management CLI(Guest) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 06/10] VM communication channels for VM Power Management(Guest) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 07/10] librte_power common interface for Guest and Host Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 08/10] Packet format for VM Power Management(Host and Guest) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 09/10] Build system integration for VM Power Management(Guest and Host) Pablo de Lara
2014-11-25 16:18           ` [dpdk-dev] [PATCH v6 10/10] VM Power Management Unit Tests Pablo de Lara
2014-11-26 16:41           ` [dpdk-dev] [PATCH v6 00/10] Virtual Machine Power Management Thomas Monjalon
2014-11-10  9:19     ` [dpdk-dev] [PATCH v2] librte_cmdline: FreeBSD Fix oveflow when size of command result structure is greater than BUFSIZ Alan Carew
2014-12-05 14:16       ` Olivier MATZ
2014-12-05 14:19         ` [dpdk-dev] [PATCH v3] " Olivier Matz
2014-12-05 15:51           ` Bruce Richardson
2014-12-05 15:58             ` Thomas Monjalon

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