Re: [dpdk-dev] 【BUG REPORT】l3fwd-power can not exit by ctrl+c

[oulijun <oulijun@huawei.com>]

在 2020/5/26 17:24, Burakov, Anatoly 写道:
> On 26-May-20 4:50 AM, oulijun wrote:
>> Hi，
>>     I have update the code into 20.05-rc2. However， the l3fwd-power 
>> startup fail.
>>
>> [root@centos-C3 build]# l3fwd-power -w 0000:7d:00.1  -c 0xc000000 -n 4 
>> -- -P -p 0x01 --config '(0,0,27)' --parse-ptype
>> EAL: Detected 128 lcore(s)
>> EAL: Detected 4 NUMA nodes
>> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
>> EAL: Selected IOVA mode 'PA'
>> EAL: No available hugepages reported in hugepages-2048kB
>> EAL: No available hugepages reported in hugepages-32768kB
>> EAL: No available hugepages reported in hugepages-64kB
>> EAL: Probing VFIO support...
>> EAL: VFIO support initialized
>> EAL:   using IOMMU type 1 (Type 1)
>> EAL: Ignore mapping IO port bar(1)
>> EAL: Ignore mapping IO port bar(3)
>> EAL: Probe PCI driver: net_hns3 (19e5:a221) device: 0000:7d:00.1 
>> (socket 0)
>> No telemetry legacy support - No legacy callbacks, legacy socket not 
>> created
>> Promiscuous mode selected
>> soft parse-ptype is enabled
>> POWER: Env isn't set yet!
>> POWER: Attempting to initialise ACPI cpufreq power management...
>> POWER: Power management governor of lcore 26 has been set to user 
>> space successfully
>> POWER: File not opened
>> POWER: Cannot get available frequencies of lcore 26
>> POWER: Attempting to initialise PSTAT power management...
>> POWER: Power management governor of lcore 26 has been set to 
>> performance successfully
>> POWER: Error opening '/dev/cpu/26/msr': No such file or directory
>> POWER: Cannot init for setting frequency for lcore 26
>> POWER: Attempting to initialise VM power management...
>> GUEST_CHANNEL: Opening channel 
>> '/dev/virtio-ports/virtio.serial.port.poweragent.26' for lcore 26
>> GUEST_CHANNEL: Unable to to connect to 
>> '/dev/virtio-ports/virtio.serial.port.poweragent.26' with error No 
>> such file or directory
>> POWER: Unable to set Power Management Environment for lcore 26
>> POWER: Library initialization failed on core 26
>> EAL: Error - exiting with code: 1
>>    Cause: init_power_library failed
>>
>> Thanks
>> Lijun Ou
>>
> 
> Hi,
> 
> Previously, l3fwd-power was very lax in what it was allowing. Now, if it 
> can't enable power management, it will not run, because it is more 
> strict in what it allows.
> 
> As is shown in the log, it tries to initialize ACPI power management, 
> but fails. Then, it tries to initialize pstate mode, and it appears that 
> MSR driver is not loaded, so it doesn't work either. It also tries to 
> check if a KVM channel exists, which doesn't, and that fails as well. 
> So, no power management environment can be enabled, and the application 
> fails to start.
> 
> In order to make it work, you should either boot in ACPI mode (kernel 
> parameter: "intel_pstate=disable"), or load the MSR driver (root 
> command: modprobe msr).
> 
> This more strict power library initialization was added because we saw 
> people misusing l3fwd-power to attempt to run without power management 
> environment being initialized (such as inside a VM while not having 
> telemetry mode enabled), which it was not designed to do and which would 
> be an invalid test.
> 
thanks. I will try it