When placed early in a search, which command is most effective at reducing search execution time?
When placed early in a search, which command is most effective at reducing search execution time?
The most effective command at reducing search execution time when placed early in a search is 'fields +'. This command allows you to specify only the fields you want to include in the search results, which minimizes the amount of data that needs to be processed. By limiting the fields, it reduces the overall workload for the search, thus improving performance before field extraction. Other commands such as 'dedup' are effective in their own rights but would not yield the same immediate reduction in execution time as 'fields +'.
Reducing search execution time is the key phrase here. On page 107 of the pdf it shows reduced execution time by adding fields +. Dedup would reduce the amount of data but we still need to retrieve it first. It wouldn’t actually do anything to reduce the execution time.
D is Correct. Dedup command removes duplicates. Sometimes your data will not have duplicates so this does not guarantee any search optimization. Fields command specifies fields you want to include in the search. Inclusion is better then exclusion. Fields command improves performance and executes before field extraction. Document on search optimization:https://docs.splunk.com/Documentation/Splunk/8.0.4/Search/Quicktipsforoptimization
I would say A is correct. We want to minimise the amount of time it will take for the search job and removing duplicates is the best way to do it.
fields + , will only include fields from the field-list. dedup, will only start sorting (de duplication) process after all the results is collected. so fields + is the most efficient.
D (fields +) is correct. This is because the fields command is a Distributable streaming command (https://docs.splunk.com/Documentation/Splunk/8.2.5/SearchReference/Fields) i.e. it is executed on the indexer before field extraction occurs and the results sent to the search head for further processing. The dedup command is a streaming command or a dataset processing command, depending on which arguments are specified with the command. Thus it does not serve to optimize searches, in fact in some instances it may negatively impact performance (https://docs.splunk.com/Documentation/Splunk/8.2.5/SearchReference/Dedup).
A is the correct answer.
A is correct. P.92
D is correct pag 106 To include, use fields + (default) – Occurs before field extraction – Improves performance
I will bet on ans A - because the question says when placed early in search. It should be Dedup. This improves the search which otherwise would have taken more time.
A. dedup (deduplicate) is most effective at reducing search execution time when placed early in a search. This is because dedup removes duplicate events from the results, reducing the amount of data that needs to be processed. By removing duplicates, the search can be more efficient, reducing search execution time. The other commands (rename, sort, and fields) also have their uses, but they are not as effective at reducing search execution time as dedup when placed early in a search.
I don't think D should be correct because the syntax being used is "fields +", which adds fields and could make the search longer. Executing a dedup early will remove a lot of redundancy.
not really. Dedup still dedups your data so you spend tons of time dedupping. Fileds + though gives you ONLY the fields that you need and does not do any extraction on other fields at all. As such what you do with fileds + is limit the number of fields in a search, hence speeding it up and not requiring anything else. With dedup you already running a deduplication which is in itself very slow.
Fields command only specifies the fields you actually need to be shown. It doesn't add any fields. It only specifies which fields must me included
A is correct based on the way of the question is asked. Document P106 --> Field extraction is the most costly part of a search, adding / removing does not change the fact.
A is correct.
Fileds + will search only the fields that you need and does not do any extraction on other fields
100% sure dedup is correct
A, NOT D
I'd say D is correct. Page 106 from PDF