July 2015
Beginner to intermediate
506 pages
10h 22m
English
Content preview from Implementing Splunk (Update)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 10. Summary Indexes and CSV Files
As the number of events retrieved by a query increases, performance decreases linearly. Summary indexing allows you to calculate the statistics in advance and then run reports against these roll ups, dramatically increasing performance.
In this chapter, we will cover the following topics:
- Understanding summary indexes
- When to use a summary index
- When not to use a summary index
- Populating summary indexes with saved searches
- Using summary index events in a query
- Using
sistats,sitop, andsitimechart - How latency affects summary queries
- How and when to backfill summary data
- Reducing summary index size
- Calculating
topfor a large time frame - Using CSV files to store transient data
- Speeding up queries and backfilling
Understanding ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.