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: Support for kernels older than 2.6.x has been removed. iostat now takes into account the POSIXLY_CORRECT environment variable. mpstat can now display per processor software interrupts statistics. Because of a change in the /proc/interrupts file format, mpstat was no longer counting the proper number of interrupts. This is now fixed.