Htop Troubleshooting and FAQ Recipes

htop•Permalink

Troubleshooting recipes for missing visibility, permission issues, terminal quirks, and common htop interpretation mistakes.

View

Standard Detailed Compact

Export

Copy the compact sheet, download it, or print it.

Download

`D` dense toggle · `C` copy all

## Permissions and visibility

Run as root for fuller visibility

↗#

sudo htop

# See more processes and use privileged actions.

Check /proc hidepid settings

↗#

mount | grep ' on /proc '

# Determine whether procfs restrictions hide details.

Limit noise to your own processes

↗#

htop -u "$USER"

# Use a user filter when system-wide lists are overwhelming.

Avoid accidental process changes

↗#

htop --readonly

# Use read-only mode in production troubleshooting.

## Terminal quirks and interpretation tips

Use monochrome when colors render poorly

↗#

htop -C

# Work around bad terminal color support.

Use a focused PID list in narrow terminals

↗#

htop -p 1,"$(pgrep -d, -x sshd)"

# Reduce clutter when columns wrap or truncate heavily.

Interpret CPU% carefully on multicore systems

↗#

A multithreaded process may show CPU% > 100 on multicore hosts.

# One process can exceed 100% if it uses multiple cores.

Distinguish RES from VIRT

↗#

RES = resident RAM in use; VIRT = virtual address space reserved or mapped.

# Resident memory and virtual size tell different stories.

Pair htop with vmstat during swap pressure

↗#

vmstat 1 10

# Cross-check memory pressure with a textual system tool.

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.

Recommended next

No recommendations yet.

Browse all sheets →