Notice the “search” command just after the left bracket “[” character. Index=”os” sourcetype=”cpu” latest=now | multikv | append One way Splunk can combine multiple searches at one time is with the “append” command and a subsearch. Now we want to see all the CPU pctIdle events for yesterday, so we use this search: Index=”os” sourcetype=”cpu” latest=now | multikv “latest=now” is the default if no “latest” is specified, so you don’t have to include it, but for any time ranges that don’t end “now” you will need to specify a “latest” field We’ll add the “multikv” command because the CPU data is columnar, and multikv transforms the column names into field names. I’m using pctIdle because my utilization is so low that it wouldn’t show up well in the graphs. This search shows all the CPU pctIdle events for today. Please note that you may not be able to copy and paste these searches into Splunk due to the different double-quotes characters in this document. We can use the time picker to choose a time range, or type the relative time modifiers directly in the search bar. My examples use CPU data from the “*NIX” App available on Splunkbase:įirst we write a search to show data from one time range. Let’s say that I want to see the five minute average CPU utilization on my system for yesterday, and compare it directly with today’s averages. Or go right to the examples on this page: Examples of relative time modifiers This is the main page: Time modifiers for search Before we continue, take a look at the Splunk documentation on time: The trick to showing two time ranges on one report is to edit the Splunk “_time” field. If you’re not familiar with the “eval”, “timechart”, and “append” commands used above, and the subsearch syntax, here are links to these commands and their associated functions in Splunk’s online documentation:Įval Command Timechart Command Append CommandĮval Functions Timechart Functions Subsearch Search for stuff yesterday | eval ReportKey=”Yesterday” | modify the “_time” field | append | timechart Here is the basic structure of the two time range search, today vs. This makes it easy to see the relationship between data over any two time ranges. It looks like the report below, where one line represents today’s data and another represents yesterday’s data.
#Splunk timechart how to
Recently a customer asked me how to show current data vs.
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