Adjusting Member Weights Member processes can change their weight using the set weight call. Table 37 Set Weight Call C tibrvftMember_SetWeight() C++ TibrvFtMember::setWeight() Java TibrvFtMember.setWeight() .NET Weight is an instance property of FTGroupMember. A program that can determine its own suitability for its task can adjust its weight accordingly, as in these examples. (Nonetheless, changing weight frequently can cause thrashing.) Example 1: Resources Consider a situation in which program performance depends upon a resource, such as long distance communications lines. Such a program could vary its weight as a function of available lines. Example 2: Load If a program can detect that its host computer has become heavily loaded, the program could lower its weight, allowing a member on a lightly loaded computer to become active in its place. Example 3: System Administrator In a third example, system administration staff track the availability of resources and the performance of various computers. In response to such information, an administrator could send a message instructing a member process to change its weight.
