For example, index=foo bar would search any data with the term bar in it, including -bar, bar”, or _bar, however it will not find terms such as barley. It should be noted that in newer versions of Splunk (6.6+), the optimizedSearch (found in the job inspector) runs this optimization for you, however, it is good practice to filter as much as possible in the preliminary search.Īlso, if adding a filter without the field, it will find events with the keyword bar, surrounded by breakers, such as commas, spaces, or dashes. As mentioned above, using transforming commands right away also is amazing at reducing your data.īy adding the filter host="bar" to the foundation of the search, Splunk will only search for events where the host field has a value of "bar". It is always best to filter in the foundation of the search if possible, so Splunk isn't grabbing all of the events and filtering them out later on. The sooner filters and required fields are added to a search, the faster the search will run. The foundation fill me up buttercup windows#She sure would go a lot faster and a lot further if towards the beginning of the trip some of those items were offloaded and only the necessary items were in the bag.Ī few things to remember about filters: time is the most efficient filter (smaller windows = faster results) and inclusion is better than exclusion ( field=foo is better than field!=bar or NOT field=bar).įiltering using default fields is very important. The foundation fill me up buttercup full#Imagine, if you will, a saddlebag on little Buttercup, full of unnecessary items from your last trip to the Splunk Swag Store. Remember, sharing is caring, and we should all share Splunk resources, since, likely, it is a shared environment amongst many users. The time range should be made as short as feasible.Īs all time searches consume a lot of resources by scanning unnecessary data, you should instead constrain your search window as much as possible. When exploring the data and/or prototyping new searches, it is recommended to keep the time range short (e.g. We can't expect Buttercup to gallop into infinity, that poor girl is going to need a break! Scheduled searches and dashboards will automatically execute in fast mode. It is great to use Fast Mode when merely checking if data is present or not (in combination with | tstats) or after a search is already built. This saves on system resources and results in faster searches.įast Mode is my personal recommendation, as it uses the least amount of system resources. If there are transforming commands like stats, chart, or timechart in the search, it will only return the aggregated/transformed events. Smart Mode is best when exploring data, as it will only pull back raw events if there are no transforming commands in the search, and will display any field extractions in the events. It is a great mode for short time frames and digging into data. It uses the most system resources out of all of the search modes. Verbose Mode returns as much information as possible from the data, including all events and field information. Underneath the search bar, there is an option to change the search mode. Search Mode tells Buttercup to either trot, canter, or gallop. When using Splunk, there are a few things that can be done to optimize searches in order to speed them up as well as decrease the amount of memory used. We need to make sure that Buttercup paces herself. I see you've galloped over here on that dashing Buttercup pony, but you've got to hold your horses! Buttercup can't be scarfing down all of those carrots and sugar cubes and then gallop at full speed.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |