Discuss Splunk SPLK-4001 Exam Topic 8 Question 52

Which of the following are ways to reduce flapping of a detector? (Select all that apply)

CEnable the anti-flap setting in the detector options menu.

DApply a smoothing transformation (like a rolling mean) to the input data for the detector.

AConfigure a duration or percent of duration for the alert.

BEstablish a reset threshold for the detector.

Suggested Answer: D, A

According to the Splunk Lantern articleResolving flapping detectors in Splunk Infrastructure Monitoring, flapping is a phenomenon where alerts fire and clear repeatedly in a short period of time, due to the signal fluctuating around the threshold value. To reduce flapping, the article suggests the following ways:

Configure a duration or percent of duration for the alert: This means that you require the signal to stay above or below the threshold for a certain amount of time or percentage of time before triggering an alert. This can help filter out noise and focus on more persistent issues.

Apply a smoothing transformation (like a rolling mean) to the input data for the detector: This means that you replace the original signal with the average of its last several values, where you can specify the window length. This can reduce the impact of a single extreme observation and make the signal less fluctuating.

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27 comments · newest first

Tamesha 3 months ago

Definitely! Also, proper calibration is key to minimize flapping.

Daryl 3 months ago

What about increasing the sample rate? That might work too.

Barabara 3 months ago

Yeah, and adjusting the gain can stabilize readings.

Broderick 3 months ago

I think using a low-pass filter helps a lot.

Blossom 4 months ago

I've heard that increasing the sample rate can help as well.

Lashonda 5 months ago

Adjusting the gain helps too!

Lauran 5 months ago

Really? I thought that just made it worse.

Valentin 5 months ago

Totally agree with that!

Quentin 6 months ago

Use a low-pass filter.

Arminda 6 months ago

Hysteresis, filtering, and dampening. Anything to avoid that disco ball effect on my detectors.

Renay 6 months ago

Hysteresis, filtering, and dampening. Gotta love a good detector that doesn't have a mind of its own.

Lina 6 months ago

Hysteresis, filtering, and dampening. Flapping detectors are the worst, amirite?

Olen 6 months ago

Hysteresis, filtering, and dampening. Gotta keep those detectors rock solid.

Gene 6 months ago

Hysteresis and filtering are the way to go. Anything to avoid that annoying flapping!

Myong 7 months ago

The answer is definitely using hysteresis and dampening. Gotta love those stable detectors!

Franchesca 7 months ago

I think using averaging techniques could help, but I’m not confident if that directly applies to flapping reduction.

Gerry 7 months ago

I feel like there was something about damping techniques in our study materials, but I can't recall the specifics right now.

Willie 8 months ago

I remember practicing a question like this where we discussed using filters to stabilize readings. That might be relevant here too.

Walker 8 months ago

I think one way to reduce flapping is by adjusting the threshold levels, but I'm not entirely sure if that's the only method.

Noemi 8 months ago

Ah yes, I remember now! Adjusting the detector's threshold, incorporating positive feedback, and using a Schmitt trigger - those are all effective ways to minimize flapping. I feel good about this question.

Wilda 8 months ago

Ugh, I'm drawing a blank on this one. Reducing flapping is an important concept, but I can't recall the specific techniques off the top of my head. Guess I need to review that material again.

Cyril 8 months ago

Okay, let's see. Reducing noise, adding hysteresis, and using a low-pass filter - those all seem like good strategies to try. I feel pretty confident about those.

Jacklyn 9 months ago

Hmm, I remember something about using a damping mechanism or filtering the input signal. I'll have to think that through more carefully.

Yuki 9 months ago

I think reducing the detector's sensitivity could help reduce flapping. But I'm not totally sure about the other options.

Shala 2 months ago

↳ replying to Yuki

I heard using filters can also help with flapping.

Quentin 2 months ago

↳ replying to Yuki

What about adjusting the threshold levels?

Leslie 3 months ago

↳ replying to Yuki

I agree, lowering sensitivity might work.

Splunk SPLK-4001 Exam - Topic 8 Question 52 Discussion