Frob 1.6a

Frob 1.6a Screenshot One of the most annoying characteristics of NT is its lack of support for tuning various system performance settings such as the foreground and background process quanta (a quantum is the time-slice, or length of time a thread will run without being pulled off the CPU for another thread to run).

Developer:   Mark Russinovich
      software by Mark Russinovich →
Price:  0.00
License:   Freeware
File size:   0K
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OS:   Windows Vista (?)
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One of the most annoying characteristics of NT is its lack of support for tuning various system performance settings such as the foreground and background process quanta (a quantum is the time-slice, or length of time a thread will run without being pulled off the CPU for another thread to run). On NT Server, the quanta are fixed for both foreground and background processes at 120ms, and on NT Workstation a background process has a quantum of 20ms, and a foreground process has a quantum of either 20, 40, or 60ms (the foreground boost slider in the Performance tab of the System applet in the Control Panel determines which).

Frob is an applet which allows you to "frob" the quanta to your liking. The new quanta will immediately be applied to every process in the system and will also affect new processes that are created.

When you start Frob, it will display the system's current foreground and background quanta. Simply enter different values and press Apply. Press Reset to restore the quanta to those that existed at the startup of Frob. Note that values 0 and greater than 420ms are effectively equal to a quantum of 10ms, and that Frob does not check against these ranges.

Another way to use Frob is to specify the foreground and background quantums on the command line:

Usage: ntfrob [foreground quantum] [background quantum]

Frob consists of a GUI that communicates with a device driver to directly lookup and frob NT's internal (and otherwise inaccessible) quantum matrix. In addition, it travels the undocumented list of processes and adjusts the quanta they are assigned. When a thread starts a new quantum, it inherits the quantum value from its process. Similarly, when a new process is created, it adopts the quantum setting of its parent.

tags the quanta  and background  foreground and  the foreground  the system  the quantum  background process  process has  

Frob 1.6a screenshot


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