HTOP(1) User Commands HTOP(1) (NAME) htop, pcp-htop - (SYNOPSIS) htop [-dCFhpustvH] pcp-htop [-dCFhpustvH] [--host/-h host] (DESCRIPTION) htop ncurses . top (/) . . ( /renice) PID . pcp-htop htop Performance Co-Pilot (PCP) ( PCPIntro(1) PMAPI(3)) htop . (FILES) . (OPTIONS) . -d --delay=DELAY . ( / ). ( ). -C --no-color --no-colour htop (monochrome). -F --filter=FILTER . ( ) . "|" . --no-function-bar . -h --help . -p --pid=PID,PID... PID . -s --sort-key COLUMN ( --sort-key help ). -t . . -u --user[=USERNAME|UID] . -U --no-unicode (ASCII) . -M --no-mouse (). --no-meters . --readonly . -V --version . -t --tree[=MODE] . -s . MODE (0/classic 1/soft/stable 2/hard/STABLE) . soft PID . hard . -H --highlight-changes=DELAY . --drop-capabilities[=off|basic|strict] libcap . (Linux capabilities). strict . (INTERACTIVE COMMANDS) htop : Tab, Shift-Tab / . (F2) . Up, Alt-k () . . Down, Alt-j () . . Left, Alt-h . Right, Alt-l . PgUp, PgDn . Home . End . Ctrl-A, ^ ( ). Ctrl-E, $ ( ). Shift-Up, Alt-Up . Shift-Up . htop . Shift-Down, Alt-Down . Shift-Down . htop . Space . "kill" . c . "kill" . U ( Space c). s : strace(1) . l : lsof(1) . w (wrap). x . F1, h, ? . F2, S (Setup) . F3, / . () . F3 . Shift-F3 . . F4,  : . Esc . . ( ). "|" . F5, t : . (toggle). . F6, <, > < > . . F7, ] ( 'nice'). () . F8, [ ( 'nice'). Shift-F7, } (autogroup) ( autogroup 'nice'). . Shift-F8, { ( autogroup 'nice'). F9, k ("Kill") : . . . F10, q . I : . +, -, * . "+" . "*" PID PID 1 (init) PID 2 (kthreadd ). a ( ) (CPU affinity): . u . N PID. M ( top). P ( top). T ( top). F ("Follow") : . . sticky follow . Shift Alt Up Down (pan). sticky follow () Shift+F . sticky follow Up Down PgUp PgDn Shift+Up Shift+Down . K : . ( .) H : ( NPTL) . ( .) O : . ( .) p . ( .) Z / . m exe comm cmdline . ( .) b (backtrace) . ( .) Ctrl-L : . Numbers PID: . (COLUMNS) . '-' htop . "Available Columns" (setup) . htop . Command ( ). 'Merge exe, comm and cmdline in Command' ( 'm') (/proc/[pid]/exe) (/proc/[pid]/comm) . (basename) . ( EXE ). Command . : o : o : o : COMM /proc/[pid]/comm . .. . EXE (basename) /proc/[pid]/exe . htop CAP_SYS_PTRACE . . /proc/[pid]/exe . . /proc/[pid]/maps . . . "Display Options" . EXE CAP_SYS_PTRACE PTRACE_MODE_READ_FSCRED . PID (Process ID). STATE (S) : S (sleeping) I (idle ) R (running) D ( / uninterruptible) Z ( ) T ( SIGTSTP) W (paging) PPID (Parent process ID). PGRP . SESSION (SID) (Session ID) . TTY . TPGID . MINFLT (page faults) . CMINFLT ( MINFLT ). MAJFLT . CMAJFLT ( MAJFLT ). UTIME (UTIME+) CPU CPU ( ) . STIME (STIME+) CPU . CUTIME (CUTIME+) CPU ( UTIME ). CSTIME (CSTIME+) CPU ( STIME ). PRIORITY (PRI) nice . (real-time) . NICE (NI) nice ( ) - ( ). ("nice" ) . . STARTTIME (START) . PROCESSOR (CPU) CPU . M_VIRT (VIRT) . M_RESIDENT (RES) ( + + ) ( ). M_SHARE (SHR) . M_PRIV (PRIV) ( ). M_TRS (CODE) (text) ( ). M_DRS (DATA) ( + ) ( ). M_LRS (LIB) . M_SWAP (SWAP) (swap) . M_PSS (PSS) (proportional set size) M_RESIDENT . M_M_PSSWP (PSSWP) (swap) M_SWAP shmem . M_EPSS (EPSS) - . M_PSSWP shmem . ST_UID (UID) (UID) . PERCENT_CPU (CPU%) . CPU . . " Irix" top(1). PERCENT_NORM_CPU (NCPU%) . " Solaris" top(1). PERCENT_MEM (MEM%) ( M_RESIDENT ). USER . ambient . : o : o : o (): TIME (TIME+) ( UTIME STIME ). NLWP (= / threads) . TGID (Thread group ID). RCHAR (RD_CHAR) . WCHAR (WR_CHAR) . SYSCR (RD_SYSC) read(2) . SYSCW (WR_SYSC) write(2) . RBYTES (IO_RBYTES) / read(2) . WBYTES (IO_WBYTES) / write(2) . CNCLWB (IO_CANCEL) / write(2). IO_READ_RATE (DISK READ) / read(2) . IO_WRITE_RATE (DISK WRITE) / write(2) . IO_RATE (DISK R/W) / IO_READ_RATE + IO_WRITE_RATE ( ). CGROUP cgroup . CCGROUP . CCGROUP cgroup . : /*.slice /[*] ( ) /system.slice /[S] /user.slice /[U] /user-*.slice /[U:*] ( /[U]) /machine.slice /[M] /machine-*.scope /[SNC:*] (SNC : systemd nspawn) / /lxc.monitor.* /[LXC:*] /lxc.payload.* /[lxc:*] /*.scope /!* /*.service /* ( ) (escape sequences) ( systemd) cgroup . OOM (OOM killer score). CTXT (context switches) . IO_PRIORITY (IO) / : R (Realtime) B (Best-effort) id (Idle) PERCENT_CPU_DELAY (CPUD%) ( ). CAP_NET_ADMIN . PERCENT_IO_DELAY (IOD%) / . CAP_NET_ADMIN . PERCENT_SWAP_DELAY (SWAPD%) . CAP_NET_ADMIN . AGRP (autogroup) . CFS . ANI nice . CFS . All other flags ( '-' ). (METERS) ( Setup F2) . CPU ( ) CPU . ( F1/h ). CPU ( low (nice) : . nice > 0. normal (user) : . . kernel (system) : . / . irq : . ( CPU). soft-irq : . ( CPU). steal : . ( CPU). guest / virt : . CPU . virt ( PCP: steal guest). io-wait : . / ( CPU). Detailed CPU time (Setup) irq soft-irq steal guest io- wait . PCP steal guest virt . / / . . (EXTERNAL LIBRARIES) htop . htop . : libsystemd libsystemd SystemD . systemd . : libsystemd systemctl(1). libsensors libsensors CPU CPU . htop libsensors CPU coretemp "Core 0" . "Package id 0" . . : C libsensors(3) libsensors (3) . libnl-3 / libnl-genl-3 libnl-3 libnl-genl-3 ( Netlink) ( PERCENT_CPU_DELAY PERCENT_IO_DELAY PERCENT_SWAP_DELAY) . --enable-delayacct . : C libnl-3 libnl-genl-3 ( --enable-delayacct ) libnl-3-200 libnl-genl-3-200 . (FILES) htop XDG ~/.config/htop/htoprc . htop . htop /etc/htoprc . $HTOPRC ( ). pcp-htop htoprc . pcp-htop Performance Co-Pilot ~/.pcp/htop/htoprc htop pcp-htop . pcp-htop (F2) . . pcp-htop . pcp-htop(5) . Performance Co-Pilot pcp-htop . OpenMetrics https://openmetrics.io pmdaopenmetrics(1) pcp-htop . htop pcp-htop . . (MEMORY SIZES) htop . IEC . K KiB ( KiB = ) . htop ( KiB ) . (SEE ALSO) proc(5) top(1) free(1) ps(1) uptime(1) limits.conf(5). PCP (SEE ALSO FOR PCP) pmdaopenmetrics(1) PCPIntro(1) PMAPI(3) pcp-htop(5). (AUTHORS) htop Hisham Muhammad . . pcp-htop Performance Co-Pilot . (COPYRIGHT) (C) 2004-2019 Hisham Muhammad. (C) 2020-2026 htop. GPLv2+: . : . . htop 3.5.3-1-arch 2026 HTOP(1)