ttune

ttune is a command-line utility found on some Unix-like operating systems, particularly those derived from Sun Microsystems' Solaris. Its primary function is to tune system parameters to improve performance. The tool allows administrators to modify various kernel and system settings that can impact aspects like memory management, process scheduling, and network throughput.

The utility typically operates by reading configuration files and applying the specified parameters. These parameters often relate to the size of buffers, the number of available resources, and the behavior of specific system daemons. For example, ttune might be used to adjust the size of the swap space, the maximum number of open files a process can have, or network-related settings like TCP window sizes.

Using ttune requires a good understanding of the underlying operating system and the potential effects of parameter changes. Incorrectly configured settings can lead to system instability or degraded performance, so it is generally recommended for experienced system administrators. The specific parameters available and their optimal values can vary significantly depending on the hardware, workload, and operating system version. Documentation for ttune on a particular system will provide details on the available options and their intended use.