Precision Time Protocol (PTP) enables synchronizing system time on multiple systems in a LAN to a common master clock in the LAN. This capability is important for benchmarking applications in latency-sensitive environments. PTP in Oracle Solaris implements the standard IEEE 1588 2008 (Version 2). PTP greatly enhances the accuracy of time synchronization. It can also take advantage of the PTP hardware assistance provided by some NICs.
For more information, see Managing the Precision Time Protocol in Introduction to Oracle Solaris 11.2 Network Services and the ptpd(1m) man page.