Release Notes: sar -q now also displays load average for the past 15 minutes. A -P option was added for displaying stats on a per-processor basis, and the iowait value displayed by sar on SMP machines with pre-2.5 kernels was fixed. When displaying CPU utilization on SMP machines, sar now recalculates the interval based on current CPU's tick count. The number of CPUs is always checked when reading /proc/stat, and sadc no longer assumes that the first line in /proc/net/sockstat concerns sockets.
Release Notes: A new option (-v) has been added to pidstat, enabling the user to display the number of threads and file descriptors associated with tasks. Several bugs have been fixed in pidstat.
Release Notes: A new metric has been added to sar network devices statistics, giving the utilization percentage of the network interface cards. Several bugs have been fixed all around.
Release Notes: The sar command can now display filesystems statistics (blocks and inodes utilization) with its new option "-F". Several (small) bugs have also been fixed.
Release Notes: mpstat now takes into account every interrupt per processor so that their number adds up to the number displayed for CPU "all". The systemd unit file could no longer be installed because a macro wasn't expanded in the configure script. This is now fixed.
Release Notes: sar, pidstat, and mpstat now stop and display their average statistics when they receive a SIGINT signal (crtl/c). pidstat now displays the task's UID for all tasks. The option -U has been added to pidstat; this option tells it to display the username of the task instead of its UID. When this option is followed by a user name, only tasks belonging to the specified user are displayed by pidstat.