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,
Anatoly
