Troubleshoot Linux High Memory Usage

1. To check memory usage, you can use the command “free -h” to see details like total, used, and available memory. You can also use the commands “top” or “htop” to view memory usage of system processes, sorted by memory consumption to identify any high-usage processes.
2. Checking the system logs can help identify the reasons for high memory usage, such as a process generating excessive logs frequently leading to increased memory consumption.
3. Check for memory leaks:
   There may be a memory leak issue in a certain application, causing memory usage to continuously increase. Tools like Valgrind can be used to detect memory leaks.
4. Check the cache and buffers: Sometimes high system memory usage may be caused by caches and buffers, you can try cleaning them up to free up memory.
5. Check the kernel parameters: Sometimes it may be necessary to adjust the kernel parameters to optimize memory usage, such as adjusting memory allocation policies, memory recycling policies, etc.

The methods above can help identify reasons for high memory usage in the system, and make appropriate optimizations and adjustments.