これで（ほぼ）リアルタイムで。
===ログ容量の参考見積
For a particular computer, a given counter instance (e.g., Processor(_Total)\% Processor Time) with 10 second sample interval will send ~1MB per day (~1MB/day/counter instance). You can multiply this number by the number of computers that you have to get an estimate usage per counter instance across all your computers.
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http://www.systemcentercentral.com/oms-near-real-time-nrt-performance-data-collection/
