All releases of sysstat
Release Notes: The pidstat command can now display task scheduling priority and policy information. Pidstat can also filter processes by name. The standard system activity daily data files may now be named "saYYYYMMDD" instead of "saDD" using sar's and sadc's option -D, and they can be located in a directory which can be different from the standard /var/log/sa place.
Release Notes: sar can now take into account a change of CPU count in its data files without losing any data. systemd timer units have been added to replace cronjobs. The nfsiostat command has been renamed nfsiostat-sysstat to avoid confusion with that included in nfs-utils package.
Release Notes: The pidstat command now includes a new metric giving per-task block I/O delays. A new option has been added to the configure script (--enable-copy-only). sadf now displays the data file creation date.
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.
Release Notes: Network and IPv4/IPv6 counters have changed to 64-bit format to keep in sync with recent kernels. A new option has been added to iostat to prevent it from displaying its first report with statistics since system boot. Several bugs have been fixed.
Release Notes: A new field has been added to sar -u and mpstat: %gnice (time spent running a niced guest). A new field has been added to sar -r: kbdirty (amount of memory waiting to get written back to disk). Support has been added for the systemd service manager. The sysstat init script has been updated to make it better conform to the LSB.
