Splunk Dev

Percentile from histogram data

yashveer_arya
Engager

Hi,
I am pushing latency histogram data to spulk. i.e

Number of
times latency
under time range : Time range (sec)
5 : 1
2 : 2
1 : 3

above histogram is created and dumped by client from individual entries of latency -> Latency under 1 Sec (5 times), 2 sec (2 times), 3 sec (1 time) : 1,1,1,1,1,2,2,3
If i have these individual records in a field at splunk then it is easy to find out the per99() by just applying this function on that field. But i do not have individual records and have buckets as mentioned above.

What is the best way to calculate the percentile to give the same result as it should give by applying per99() on individual entries (e.g. 1,1,1,1,1,2,2,3) ?

thanks

Tags (1)

p_gurav
Champion

Can you try something like this with your data:

| makeresults | eval ph="0,0,0,0,0,0,0,1,0,34,66,66,64,68,60,79,7374,13812,0,0,0,0,0,0,0,0,0,0" | eval times="0,1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900" | makemv ph delim="," | makemv times delim="," | eval z=mvzip(times, ph) | mvexpand z | rex field=z "(?<t>[^\,]+)\,(?<ph>.*)" | table _time t ph | chart values(ph) as ph over t by _time

yashveer_arya
Engager

Thanks
but i do not have common seperated list of numbers bu i have histogram i want to get this comma seperated list on the basis of count.
E.g. I have
5 : 1 (1, 5 times)
2 : 2 (2, 2 times)
1 : 3 (3, 1 times)

and want 1,1,1,1,2,2,3

0 Karma

p_gurav
Champion

Try this:

| makeresults | eval ph="5 : 1, 2 : 2, 1 : 3" | makemv ph delim="," | mvexpand ph | rex field=ph "(?P\d+) : (?P\d+)" | table _time t ph | chart values(ph) as ph over t by _time

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!

From Data to Insight: Announcing the Winners of the Splunk Dashboard Contest

Hi Splunkers, First off, thank you to everyone who participated in our very first From Data to Insight: The ...

Splunk Developers: Construct Your Future at the .conf26 Builder Bar

Calling all Splunk architects, platform admins, and app developers: the site is open, and the blueprints are ...

Quick connection discovery mode for forwarders

When a Splunk forwarder loses connectivity to its indexers, it does not always reconnect immediately. In many ...