latencytop: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/sbin/latencytop - from package: latencytop

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/latencytop - from package: latencytop

You may install the required package with command apt-get install {package}

Error in other languages:
latencytop: bevel nie gevind nie
latencytop: comandă negăsită
latencytop: comando não encontrado
latencytop: commande introuvable
latencytop: command not found
latencytop: käsku ei ole
latencytop: không tìm thấy lệnh
latencytop: komanda nerasta
latencytop: Kommando nicht gefunden.
latencytop: kommandot finns inte
latencytop: komut yok
latencytop: nie znaleziono polecenia
latencytop: níor aimsíodh an t-ordú
latencytop: no se encontró la orden
latencytop: no s'ha trobat l'ordre
latencytop: opdracht niet gevonden
latencytop: parancs nem található
latencytop: perintah tidak ditemukan
latencytop: príkaz nenájdený
latencytop: příkaz nenalezen
latencytop: команда не найдена
latencytop: командата не е открита
latencytop: 命令找不到
latencytop: コマンドが見つかりません