January 2013
Beginner to intermediate
448 pages
9h 16m
English
book
Implementing Splunk: Big Data Reporting and Development for Operational Intelligence
by VINCENT BUMGARNER
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Chapter 9. Summary Indexes and CSV Files
As the number of events retrieved by a query increases, performance decreases linearly. Summary indexing allows you to calculate statistics in advance, then run reports against these "roll ups", dramatically increasing performance.
Understanding summary indexes
A summary index is a place to store events calculated by Splunk. Usually, these events are aggregates of raw events broken up over time, for instance, how many errors occurred per hour. By calculating this information on an hourly basis, it is cheap and fast to run a query over a longer period of time, for instance, days, weeks, or months.
A summary index is usually populated from a saved search with Summary indexing enabled as an action. This is not ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.