How to monitor and optimize system performance on Kirin operating system?

How to monitor and optimize system performance on Kirin operating system?

Kirin operating system is a high-performance, high-reliability operating system independently developed by Huawei. It is widely used in servers, cloud computing and other fields. In order to ensure system stability and performance optimization, system performance monitoring and optimization are crucial. This article will introduce how to monitor and optimize system performance on Kirin operating system, and provide corresponding code examples.

1. Performance Monitoring

1. top command
   top command is a commonly used performance monitoring tool that can display the running status of the system in real time, including CPU utilization. , memory usage, process information, etc. In the Kirin operating system, you can install the top tool through the following command:

   sudo apt-get install procps

   After the installation is complete, use the following command to start the top tool:

   top

2. sar command# The ##sar command is a system activity reporting tool that can be used to monitor the running status of the system and generate corresponding reports. In the Kirin operating system, you can install the sar tool through the following command:
   

   sudo apt-get install sysstat

   After the installation is complete, use the following command to generate a system status report:

   sar -u

   2. Performance Optimization

3. CPU optimization

   The CPU is one of the core components of the system, and optimizing it can improve the overall performance of the system. In Kirin operating system, the CPU can be optimized through the following methods:
   (1) Disable unnecessary services and processes.
   In Kirin operating system, you can use the following command to view all running services and processes:
   

   ps aux

   As needed, use the following command to stop unnecessary services and processes:

   sudo service servicename stop

   (2) Adjust CPU scheduling strategy.

   Kirin operating system uses the CFS (Completely Fair Scheduler) scheduler by default to manage CPU resources. You can use the following command to view the current CPU scheduling strategy:
   

   cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

   If necessary, you can use the following command to switch to other CPU scheduling strategies, such as performance:

   echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

4. Memory Optimization

   Memory is another important component of the system, and optimizing it can improve the operating efficiency of the system. In Kirin operating system, you can optimize memory through the following methods:
   (1) View memory usage.
   You can check the current memory usage through the following command:
   

   free -m

   (2) Adjust the memory allocation strategy.

   As needed, you can adjust the memory allocation strategy by modifying the /etc/sysctl.conf file. For example, use the following command to modify the behavior of the system when there is insufficient memory:
   

   sudo vim /etc/sysctl.conf

   Add the following content at the end of the file:

   vm.swappiness = 5

   Save and exit the file. Then use the following command to make the modification take effect:

   sudo sysctl -p

   3. Code example

Performance monitoring and optimization require real-time monitoring and analysis of the system. The following is a simple Python code example for monitoring and optimizing CPU utilization on the Kirin operating system:

import os

def get_cpu_usage():
    result = os.popen("sar -u 1 1 | grep Average")
    lines = result.readlines()
    if len(lines) > 0:
        tokens = lines[0].split()
        if len(tokens) > 0:
            return float(tokens[-1])
    return 0

def optimize_cpu_usage(threshold):
    cpu_usage = get_cpu_usage()
    if cpu_usage > threshold:
        # 按需停止不必要的服务和进程
        os.system("sudo service servicename stop")
        # 切换到performance调度策略
        os.system("echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor")

# 设置CPU利用率的阈值为80%
threshold = 80

# 持续进行性能优化
while True:
    optimize_cpu_usage(threshold)

The above code obtains the CPU utilization by calling the sar command and performs operations based on the set threshold Optimization, including stopping unnecessary services and processes, and switching to a performance scheduling strategy. It can be modified and expanded according to actual needs.

Summary:

This article introduces how to monitor and optimize system performance on the Kirin operating system, including using the top command and sar command for performance monitoring, as well as methods for optimizing CPU and memory. At the same time, a simple code example is provided to monitor and optimize CPU utilization. I hope this article can help readers better understand and apply the performance monitoring and optimization technology of Kirin operating system.

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