A Flexible Framework: Built-in candidacy functions (1/2)

byAge [# seconds] remove all servers from whom we have not heard resource information in a while
byRandom reorder the existing server list randomly
byLogWindow reduce the list of n servers to the first log2(n)
byCPU reorder the existing server list from most idle CPU to least idle CPU
byLoad [# bias] reorder the existing server list from least loaded to most loaded biased toward yourself
byCost reorder the existing server list from least costly to most costly

byAge [# seconds] remove all servers from whom we have not heard resource information in a while