In a matter of days, Splunk will accumulate data and start to move events through the bucketing process. With the millions or billions of events that are typical with a robust Splunk implementation, you can start to understand how searches run over long-time horizons can slow down.
There are two ways to circumvent this problem. In addition to search acceleration, completed earlier in this chapter, faster search results on large amounts of data can be achieved through summary indexing.
With summary indexing, you run a scheduled search and output the results into a different index, often called summary. The result will only show the computed statistics of the search. This results in a very small subset of data that will be much faster to retrieve and report on than going through a large set of detailed event records and summarizing results on the fly. This concept...
