File-Network Resource Leak - Simple Troubleshooting Methods
Using ctbots.com Online Tools to Easily Locate Linux Resource Leak Issues
In daily system operations and troubleshooting, resource leaks are a common yet frustrating problem. Issues like file handle leaks, TCP connection leaks, and UDP socket leaks, if not detected and handled promptly, often lead to system performance degradation or even service unavailability.
Traditional troubleshooting methods require executing various commands on servers and manually analyzing output results, which is not only inefficient but also prone to missing critical information. To solve this pain point, I developed a set of online visualization tools that make resource leak problem identification simple and efficient.
Tool Overview
ctbots.com provides three specialized resource leak analysis tools:
- File Handle Leak Analysis: http://ctbots.com/en/linux/performance/lsof.html
- TCP Connection Leak Analysis: http://ctbots.com/en/linux/performance/procTcp.html
- UDP Socket Leak Analysis: http://ctbots.com/en/linux/performance/procUdp.html
File Handle Leak Troubleshooting Practice
Problem Symptoms
System encounters "Too many open files" error, services restart frequently.
Online Analysis
- Open http://ctbots.com/en/linux/performance/lsof.html
- Click the "Upload File" button and select the collected lsof log file
- The system will automatically parse and generate an analysis report
Key Analysis Dimensions
Through the tool, you can easily view:
- Statistics by Process: Which process has opened the most files
- Statistics by File Type: Whether it's regular files, sockets, or pipe leaks
- Statistics by File: Which directory's files are frequently opened
TCP Connection Leak Troubleshooting Practice
Problem Background
Application experiences connection pool exhaustion in high-concurrency scenarios, unable to establish new database connections.
Online Analysis Steps
- Visit http://ctbots.com/en/linux/performance/procTcp.html
- Upload the log file generated from /proc/net/tcp
- View the generated connection status analysis report
UDP Socket Leak Troubleshooting Practice
Problem Symptoms
UDP service performance degradation, abnormally high system resource usage.
Analysis Process
- Open http://ctbots.com/en/linux/performance/procUdp.html
- Upload the collected UDP data file log
- Analyze UDP socket usage