Process(PID) performance and diagnostics

This toolset presents most used Linux commands for deeper process analysis.

Tip

Each tool serves a specific purpose in understanding process behavior and identifying potential issues before they become critical.

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Analyzing PID usage

ps that will show detailed info about PID, command that started it, thread's:

PID:


Detailed report (-o pid,ppid,pcpu,...)
Show threads (-L)

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Real-time with top

Usual but top for your PID only

PID:

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CPU & IO with pidstat

Detailed usage of CPU, memory and IO by PID

PID:


Interval (seconds):


Number of samples:

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Syscalls with strace -c

Most common syscalls used via timeframe

PID:


Monitoring duration (seconds):

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Disk IO with iotop

IO usage by your PID

PID:

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Live performance with perf top

Shows where the code actually "burns" CPU - most frequently called functions

PID:

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Open files with lsof

PID: