расширенный мониторинг системы и процессов (Advanced System and Process Monitor)
Сигналы (Signals)
By sending the SIGUSR1 signal to pcp-atop a new sample will be
forced, even if the current timer interval has not exceeded yet.
The behavior is similar to pressing the `t` key in an interactive
session.
By sending the SIGUSR2 signal to pcp-atop a final sample will be
forced after which pcp-atop will terminate.
