migspeed: 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/bin/migspeed - from package: numactl

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

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