Resource Analysis

Resource Analysis Skill

This skill provides detailed guidance for analyzing system resource usage from sosreport archives, including memory, CPU, disk space, and process information.

When to Use This Skill

Use this skill when:

• Analyzing the /sosreport:analyze command's resource analysis phase
• Investigating performance issues or resource bottlenecks
• Identifying resource exhaustion problems
• Correlating resource usage with system failures

Prerequisites

• Sosreport archive must be extracted to a working directory
• Path to the sosreport root directory must be known
• Understanding of Linux resource management

Key Resource Data Locations in Sosreport

1. Memory Information:

   • sos_commands/memory/free - Memory usage snapshot
   • proc/meminfo - Detailed memory statistics
   • sos_commands/memory/swapon_-s - Swap usage
   • proc/buddyinfo - Memory fragmentation

2. CPU Information:

   • sos_commands/processor/lscpu - CPU architecture and features
   • proc/cpuinfo - Detailed CPU information
   • sos_commands/processor/turbostat - CPU frequency and power states (if available)
   • uptime - Load averages

3. Disk Information:

   • sos_commands/filesys/df_-al - Filesystem usage
   • sos_commands/block/lsblk - Block device information
   • sos_commands/filesys/mount - Mounted filesystems
   • proc/diskstats - Disk I/O statistics

4. Process Information:

   • sos_commands/process/ps_auxwww - Process list with details
   • sos_commands/process/top - Process snapshot (if available)
   • proc/[pid]/ - Per-process information

Implementation Steps

Step 1: Analyze Memory Usage

1. Parse free command output:

   # Check if free output exists
   if [ -f sos_commands/memory/free ]; then
     cat sos_commands/memory/free
   fi
   

2. Extract memory metrics:

   # Parse /proc/meminfo for detailed stats
   if [ -f proc/meminfo ]; then
     grep -E "^(MemTotal|MemFree|MemAvailable|Buffers|Cached|SwapTotal|SwapFree|Dirty|Slab):" proc/meminfo
   fi