bashANYsudopermissions
bash
sudo htopOn many systems, unprivileged users cannot fully inspect other users' processes.
Htop Troubleshooting and FAQ Recipes
Troubleshooting recipes for missing visibility, permission issues, terminal quirks, and common htop interpretation mistakes.
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Permissions and visibility
Fix common issues where htop does not show what you expect.
bashANYprochidepidmount
bash
mount | grep ' on /proc 'Procfs mount options can restrict which process details are visible to non-root users.
bashANYuserfilter
bash
htop -u "$USER"Useful on busy shared boxes where you only need your workload.
bashANYreadonlyproduction
bash
htop --readonlyPrevents accidental renice or signal operations from the UI.
Terminal quirks and interpretation tips
Common issues with display behavior and reading htop output correctly.
bashANYcolorterminal
bash
htop -CHelpful in minimal terminals, serial consoles, or screenshot tooling.
bashANYpidterminal
bash
htop -p 1,"$(pgrep -d, -x sshd)"Targeted views are easier to read on small terminal windows.
Interpret CPU% carefully on multicore systems
One process can exceed 100% if it uses multiple cores.
textANYcpuinterpretation
text
A multithreaded process may show CPU% > 100 on multicore hosts.This is expected behavior when percentages are summed across cores.
textANYmemoryresvirt
text
RES = resident RAM in use; VIRT = virtual address space reserved or mapped.Large VIRT values do not always mean equally large real memory pressure.
bashANYvmstatswap
bash
vmstat 1 10Helpful when you need a short rolling view of runnable tasks, swap, and CPU wait states.
More in htop
Htop Batch Alternatives, Exports, and Companion Commands
Practical command-line companions and non-interactive alternatives to htop for logs, scripts, and copyable output.
Htop Remote, Container, and Server Recipes
Common htop workflows for SSH sessions, containers, services, and production troubleshooting on Linux hosts.
Htop Config, Persistence, and Theming
Persist htop settings, edit configuration files, and manage practical theming and display preferences across sessions.
Htop Columns, Meters, Threads, and Display Options
Customize meters, visible columns, threads, kernel tasks, and display density for different monitoring scenarios.
Htop Process Actions, Signals, and Priority Changes
Use htop to renice, kill, tag, and inspect processes, including shortcuts for signals, strace, lsof, and affinity-related workflows.
Htop Navigation, Search, Filter, Sort, and Tree View
Interactive keys and workflows for moving around htop, searching processes, filtering by command, changing sort columns, and working in tree view.