Re: [dts] [PATCH V1] test_plan: add test plan of power pstate

["Yao, Lei A" <lei.a.yao@intel.com>]

> -----Original Message-----
> From: Ma, LihongX <lihongx.ma@intel.com>
> Sent: Tuesday, October 8, 2019 2:38 AM
> To: dts@dpdk.org
> Cc: Yao, Lei A <lei.a.yao@intel.com>; Ma, LihongX <lihongx.ma@intel.com>
> Subject: [dts][PATCH V1] test_plan: add test plan of power pstate
> 
> Signed-off-by: lihong <lihongx.ma@intel.com>
Acked-by: lei yao<lei.a.yao@intel.com>
> ---
>  test_plans/power_pstate_test_plan.rst | 97
> +++++++++++++++++++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100644 test_plans/power_pstate_test_plan.rst
> 
> diff --git a/test_plans/power_pstate_test_plan.rst
> b/test_plans/power_pstate_test_plan.rst
> new file mode 100644
> index 0000000..f2a5e19
> --- /dev/null
> +++ b/test_plans/power_pstate_test_plan.rst
> @@ -0,0 +1,97 @@
> +.. Copyright (c) <2019>, Intel Corporation
> +   All rights reserved.
> +
> +   Redistribution and use in source and binary forms, with or without
> +   modification, are permitted provided that the following conditions
> +   are met:
> +
> +   - Redistributions of source code must retain the above copyright
> +     notice, this list of conditions and the following disclaimer.
> +
> +   - Redistributions in binary form must reproduce the above copyright
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> +     the documentation and/or other materials provided with the
> +     distribution.
> +
> +   - Neither the name of Intel Corporation nor the names of its
> +     contributors may be used to endorse or promote products derived
> +     from this software without specific prior written permission.
> +
> +   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
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> NOT
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> ADVISED
> +   OF THE POSSIBILITY OF SUCH DAMAGE.
> +
> +=======================================
> +Power Lib Based on Intel Pstate Driver
> +=======================================
> +Before DPDK 19.02 version, DPDK power lib is based on acpi-cpufreq driver
> in Linux.
> +From DPDK 19.02, Power lib start support intel_pstate driver.
> +
> +Prepare Settings
> +================
> +1. Turn on Speedstep option in BIOS
> +2. Turn on CPU C3 and C6
> +3. Turn on Turbo in BIOS
> +4. In BIOS set up the HWPM to "Native Mode"
> +5. Turn off "Hyper Threading"
> +6. Probe msr (used to get Intel CPU's no_turbo max frequency)
> +
> +Definition of CPU frequency in this test suite:
> +sys_min = sys/devices/system/cpu/cpu{}/cpufreq/cpuinfo_min_freq
> +sys_max = sys/devices/system/cpu/cpu{}/cpufreq/cpuinfo_max_freq
> +no_turbo_max = [rdmsr -p 1 0x0CE -f 15:8 -d]00000
> +
> +Note:
> +For Intel Processor, If "Hyper Threading" enabled in BIOS, need change
> +frequency on both HT core at the same time to let the frequency take
> effect.
> +From DPDK 19.08, vm_power_manager will set fifo channel for each core.
> +Before DPDK 19.08, all core will share 1 fifo channel
> +
> +Test Case1 : Test Pstate lib basic action based on directly power
> +command
> +=========================================================
> ==============
> +====
> +Step 1. Create powermonitor fold for::
> +
> +    Create monitor channel folder, /tmp/powermonitor, give permission
> + for read and write
> +
> +Step 2. Luanch VM power manager sample::
> +
> +    ./examples/vm_power_manager/build/vm_power_mgr -l 1-4 -n 4
> + --file-prefix=power --no-pci
> +
> +Step 3. Prepare different command in JSON format then send it to the fifo
> channel::
> +
> +    The command Sample as following:
> +    {"instruction": {
> +    "name": "policy",
> +    "command": "power",
> +    "unit": "SCALE_MAX"
> +    }}
> +
> +    Test with following 6 command type with following Sequency:
> +    ENABLE_TURBO -> SCALE_MIN -> SCALE_MAX -> DISABLE_TURBO ->
> ENABLE_TURBO -> SCALE_UP -> SCALE_DOWN
> +    cat command.json >/tmp/powermonitor/fifo{core_number}
> +    :"SCALE_MAX": Scale frequency of this core to maximum
> +    :"SCALE_MIN": Scale frequency of this core to minimum
> +    :"SCALE_UP": Scale up frequency of this core
> +    :"SCALE_DOWN": Scale down frequency of this core
> +    :"ENABLE_TURBO": Enable Turbo Boost for this core
> +    :"DISABLE_TURBO": Disable Turbo Boost for this core
> +
> +Step 4. Check the Core1  frequency for each command in Step 3::
> +
> +    min=sys/devices/system/cpu/cpu{}/cpufreq/scaling_min_freq
> +    max=sys/devices/system/cpu/cpu{}/cpufreq/scaling_max_freq
> +    Check point of Step SCALE_MIN: min=max=sys_min
> +    Check point of Step SCALE_MAX: min=max=sys_max
> +    Check point of Step DISABLE_TURBO: min=max=no_turbo_max
> +    Check point of Step ENABLE_TURBO: min=max=no_turbo_max
> +    Check point of Step SCALE_UP: min=max=sys_max
> +    Check point of Step SCALE_DOWN: min=max=no_turbo_max
> --
> 2.7.4