Sar -y

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      -y     Report TTY devices activity. The following values are
             displayed:

             rcvin/s
                    Number of receive interrupts per second for current
                    serial line.  Serial line number is given in the
                    TTY column.

             xmtin/s
                    Number of transmit interrupts per second for
                    current serial line.

             framerr/s
                    Number of frame errors per second for current
                    serial line.

             prtyerr/s
                    Number of parity errors per second for current
                    serial line.

             brk/s  Number of breaks per second for current serial
                    line.

             ovrun/s
                    Number of overrun errors per second for current
                    serial line.

See also

• sar, installation, sar -A, sar -F, sar -d, sar -I ALL, sar -n NFS, sar -r, sar -S, sar -W, sar -n ALL, Installing sysstat using Ansible, /etc/sysstat/sysstat, /etc/cron.d/sysstat, sar --help, Sysstat changelog, /var/log/sysstat/, cpu time steal, sargraph, isag, Telegraf