RAM Usage Monitoring and Analysis

This repository contains tools to monitor and analyze RAM usage on a Linux system. It includes a shell script to log RAM usage over time and a Python script to analyze the generated log file and recommend whether a RAM upgrade is needed.

Contents

• Shell Script: memlogger.sh
• Python Analyzer: analyzer/analyze.py

Shell Script: memlogger.sh

The memlogger.sh script logs the system's RAM usage at regular intervals. This can help you track memory usage patterns and identify periods of high memory consumption.

Usage

1. Make the script executable:

   chmod +x memlogger.sh

2. Run the script:

   sudo ./memlogger.sh

   By default, the script logs RAM usage every 10 seconds. You can modify the interval by changing the INTERVAL variable within the script.

Description

The script records the following details:

• Total memory
• Used memory
• Free memory
• Shared memory
• Buffer/cache memory
• Available memory
• Swap memory (total, used, and free)

These details are logged with a timestamp to the file ram_usage-DATE.log in the current directory.

Sample Output

Start RAM usage monitoring at Mi 19. Jun 21:17:39 CEST 2024
2024-06-19 21:17:39 -                gesamt       benutzt     frei      gemns.  Puffer/Cache verfügbar
Speicher:      14803        5730        1082          75        7990        7974
Auslager:      18898        1356       17541
2024-06-19 21:17:49 -                gesamt       benutzt     frei      gemns.  Puffer/Cache verfügbar
Speicher:      14803        5745        1065          75        7992        7961
Auslager:      18898        1352       17545

Python Analyzer: analyze_ram_log.py

The analyze.py script analyzes the log file generated by the log_ram_usage.sh script and provides a recommendation on whether a RAM upgrade is needed based on the percentage of log entries with low free memory.

Usage

1. Ensure you have Python installed.

2. Run the script:

   python3 analyze.py

   Make sure the ram_usage.log file is in the same directory as the Python script, or update the LOGFILE_PATH constant in the script to point to the correct location.

Description

The script performs the following actions:

• Reads and parses the ram_usage.log file.
• Analyzes the entries to count how many times the free memory was below a specified threshold (default is 1GB).
• Calculates the percentage of entries with low free memory.
• Provides a recommendation based on the analysis (e.g., recommending a RAM upgrade if more than 20% of entries have low free memory).

Configuration

• Threshold: You can modify the THRESHOLD_MB constant to set a different threshold for low free memory.
• Log File Path: Update the LOGFILE_PATH constant to point to the location of your ram_usage.log file.

Output

The script outputs the following information:

• Total log entries analyzed
• Number of entries with low memory
• Percentage of entries with low memory
• Recommendation based on the analysis
• Timestamp of the first log entry
• Timestamp of the last log entry

Sample Output

Total log entries analyzed: 238
Entries with low memory: 135
Percentage of entries with low memory: 56.72%
Recommendation: RAM upgrade recommended.
First log entry: 2024-06-19 21:17:39
Last log entry: 2024-06-19 21:57:11