Splunk Search

Regarding Splunk's eval random() function

maverick
Splunk Employee
Splunk Employee

Since it does not appear that you can pass a number into the random() function, I'm curious to know what is being used to seed it's "randomness".

Is it the first or last timestamp of the event(s) in your result set, or maybe the total number of events returned in the result set? Something else?

Marklar
Splunk Employee
Splunk Employee

The seed is generated from the pid and the time of day, not anything to do with the results.

Marklar
Splunk Employee
Splunk Employee

Correct. Every search is started in a new process, which is when the random number generator is seeded.

maverick
Splunk Employee
Splunk Employee

Okay. and by time of day you mean the current time that the search is actually ran?

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

(re)Introducing the Splunk Community Champions + 2026 – 2027 Splunk MVPs ...

This program exists as a channel to empower and recognize Splunk advocates and help supercharge initiatives to ...

Introducing the 2026 - 2027 SplunkTrust cohort!

The goal of the SplunkTrust™ membership has historically been to acknowledge and recognize those who go above ...

Pro Tips for .conf26: How to Prep Like a Splunk Veteran

There’s no shortage of incredible content lined up for .conf26 in Denver, from deep-dive technical sessions ...