System Methodology Profiler Functions

The System Methodology Profiler tool can be used on physical machines. It enables one-click collection of multidimensional performance statistics, covering cache misses, memory access, NUMA, microarchitecture, miss latencies, hotspot functions, CPU usage, NIC bandwidth, I/O, memory usage, softirqs, PCIe, PA2Ring, and Ring2PA. It also supports instruction type analysis. After the collected data is analyzed, a time series diagram is generated for each metric to display the resource usage from the service layer to the processor layer over time.

PCIe, PA2Ring, and Ring2PA data can be collected for some servers equipped with the new Kunpeng 920 processor model but not for servers equipped with Kunpeng 920.

**Table 1** Verified servers and OS compatibility
Server Architecture	OS	Remarks
Servers with Kunpeng 920 series processors	openEuler 20.03 openEuler 22.03 openEuler 24.03	-
Intel x86 (CPU family: 6; model: 63)	CentOS 7.9	The tool collects only TopDown L1 metrics on Intel x86. The transmission width used to calculate these TopDown metrics is 4. The rx_sccl or miss latency metrics cannot be collected.
AMD x86 (CPU family: 25; model: 17)	openEuler 22.03	The tool does not collect TopDown, rx_sccl, or miss latency metrics or DDRC bandwidth on AMD x86.

Prerequisites

You have installed the System Methodology Profiler. See Installing a Compressed Package (.tar.gz).
The tool is contained in an independent package (ksys-x.x.x-Linux-aarch64.tar.gz). Extract the package and switch to the tool directory.

Command Function

Collects multi-dimensional performance data. After the collected data is analyzed, a time series diagram is generated for each metric to display the resource usage from the service layer to the processor layer over time.

Syntax

./ksys [-h] {collect,report,diff,stability-check} ...

Example

./ksys -h

Command output:

usage: ksys [-h] {collect,report,diff,stability-check} ...

The performance analysis tool is a data collection and analyzer,
which mainly includes data collection, data analysis, time line
alignment, data comparison, and output result data for subsequent
methodology modeling.

positional arguments:
  {collect,report,diff,stability-check}
    collect             Create a collection command line task.
    report              Create a report command line task.
    diff                Create a compare command line task.
    stability-check     Create an environment stability check command line task.

options:
  -h, --help            show this help message and exit

**Table 2** Subcommand description
Subcommand	Description
collect	The tool enables one-click collection of multidimensional performance statistics, covering cache misses, memory access, NUMA, microarchitecture, miss latencies, hotspot functions, CPU usage, NIC bandwidth, I/O, memory usage, softirqs, PCIe, PA2Ring, and Ring2PA.
report	The tool analyzes the JSON files generated during data collection and generates terminal and Excel reports. A terminal report displays summary data, and an Excel report displays summary data and a time series chart.
diff	The tool compares performance data in JSON files generated after multiple rounds of collection and generates terminal and Excel comparison reports.
stability-check	The tool checks the environment stability to determine whether the environment load is stable based on the coefficient of variation (CV).

Parent topic: System Methodology Profiler