All Apps and Add-ons

How to sum 2 field that have simiar field name ?

jienlim2
New Member

How can i sum the value of 2 field that have similar server name without write each eval line. i am looking using foreach command to perform addtional operation by matching server name but fail. Appreciate if anyone can help?

Example :
lower95(prediction(serverA)) = lower95(prediction(serverA)) - stdev(prediction(serverA))
lower95(prediction(serverB)) = lower95(prediction(serverB)) - stdev(prediction(serverB))

upper95(prediction(serverA)) = upper95(prediction(serverA)) + stdev(prediction(serverA))
upper95(prediction(serverB)) = upper95(prediction(serverB)) + stdev(prediction(serverB))

My query :
index=winserver sourcetype="Perfmon:CPU" counter="% Processor Time" host= serverA OR host= ServerB
| timechart span=1h eval(round(avg(Value),2)) by host useother=f limit=0
| predict
[| search index=winserver object=Processor host= ServerA OR host= ServerB earliest=-7d@d latest=now()
| stats values(host) as listserver
| return $listserver] algorithm=LLP holdback=0 future_timespan=168 period=24 upper95=upper95 lower95=lower95
| eventstats stdev(prediction*)
|fields - HOE* predict*

Original data

_time lower95(prediction(serverA)) lower95(prediction(serverB)) stdev(prediction(serverA)) stdev(prediction(serverB)) upper95(prediction(serverA)) upper95(prediction(serverB))
7/1/2019 0:00 8.83 2.35 11.00 3.85 36.17 3.77
7/1/2019 1:00 9.94 0.97 11.00 3.85 36.54 4.99
7/1/2019 2:00 11.03 2.50 11.00 3.85 34.11 3.88
7/1/2019 3:00 8.38 2.23 11.00 3.85 34.52 4.15
7/1/2019 4:00 7.15 2.35 11.00 3.85 21.55 4.27

Expected output :

_time lower95(prediction(serverA)) lower95(prediction(serverB)) stdev(prediction(serverA)) stdev(prediction(serverB)) upper95(prediction(serverA)) upper95(prediction(serverB))
7/1/2019 0:00 -2.17 -1.50 11.00 3.85 47.17 7.62
7/1/2019 1:00 -1.06 -2.88 11.00 3.85 47.54 8.84
7/1/2019 2:00 0.03 -1.35 11.00 3.85 45.11 7.73
7/1/2019 3:00 -2.62 -1.62 11.00 3.85 45.52 8.00
7/1/2019 4:00 -3.85 -1.50 11.00 3.85 32.55 8.12

0 Karma
Get Updates on the Splunk Community!

Building Reliable Asset and Identity Frameworks in Splunk ES

 Accurate asset and identity resolution is the backbone of security operations. Without it, alerts are ...

Cloud Monitoring Console - Unlocking Greater Visibility in SVC Usage Reporting

For Splunk Cloud customers, understanding and optimizing Splunk Virtual Compute (SVC) usage and resource ...

Automatic Discovery Part 3: Practical Use Cases

If you’ve enabled Automatic Discovery in your install of the Splunk Distribution of the OpenTelemetry ...