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troubleshooting utilities
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| Table: Process and Load Monitoring Utilities | |
| top - Process activity, dynamically updated procps | |
| uptime - How long the system is running and the average load procps | |
| ps - Detailed information about processes procps | |
| pstree - A tree of processes and their connections psmisc (or pstree) | |
| mpstat - Multiple processor usage sysstat | |
| iostat - CPU utilization and I/O statistics sysstat | |
| sar - Display and collect information about system activity sysstat | |
| numastat - Information about NUMA (Non-Uniform Memory Architecture) numactl | |
| strace - Information about all system calls a process makes strace | |
| Table: Memory Monitoring Utilities | |
| Utility Purpose Package | |
| free - Brief summary of memory usage procps | |
| vmstat - Detailed virtual memory statistics and block I/O, dynamically updated procps | |
| pmap - Process memory map procps | |
| Table: I/O Monitoring Utilities | |
| Utility Purpose Package | |
| iostat - CPU utilization and I/O statistics sysstat | |
| sar - Display and collect information about system activity sysstat | |
| vmstat - Detailed virtual memory statistics and block I/O, dynamically updated procps | |
| Table: Network Monitoring Utilities | |
| Utility Purpose Package | |
| netstat - Detailed networking statistics netstat | |
| iptraf - Gather information on network interfaces iptraf | |
| tcpdump - Detailed analysis of network packets and traffic tcpdump | |
| wireshark - Detailed network traffic analysis wireshark |
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