When prestats is set to true, instructions with the AS clause are not relevant. When you use the prestats format, you can pipe the data into the chart, stats, or timechart commands, which are designed to accept the prestats format. The prestats format is a Splunk internal format that is designed to be consumed by commands that generate aggregate calculations. prestats Syntax: prestats=true | false Description: Specifies whether to use the prestats format. You also cannot use the WHERE clause to search for terms or phrases. Does not support CASE or TERM directives. See the following sections for descriptions of each of these logical expression components. Includes time and search modifiers, and comparison expressions. Syntax: ||((NOT)? )|||( (OR)? ) Description: An expression describing the filters that are applied to your search. Description: Specifies one or more fields to group the results by. If you do not provide a fillnull_value argument, mstats omits rows for events with one or more null field values from its results. Null values include field values that are missing from a subset of the returned events as well as field values that are missing from all of the returned events. ![]() Default: 10000000 (10 million) fillnull_value Description: This argument sets a user-specified value that the mstats command substitutes for null values for any field within its group-by field list. For mstats, chunk_size cannot be set lower than 10000. A higher chunk_size, on the other hand, can help long-running searches to complete faster, with the potential tradeoff of causing the search to be less responsive. In such situations, a lower chunk_size value can make mstats searches more responsive, but potentially slower to complete. This can happen when a search groups by excessively high-cardinality dimensions (dimensions with very large amounts of distinct values). ![]() Lower this setting from its default only when you find a particular mstats search is using too much memory, or when it infrequently returns events. tsidx file) when the Splunk software processes searches. This argument controls how many metric time series are retrieved at a time from a single time-series index file (. chunk_size Syntax: chunk_size= Description: Advanced option. See the Chart options section in this topic. Default: chart=f Syntax: chart.limit | chart.agg | enull | eother | chart.nullstr | chart.otherstr Description: Options that you can specify to refine the result. The second grouping field represents the y-axis and is a series split field. The first grouping field represents the chart x-axis. Without a span, the mstats chart mode requires one or two grouping fields. When no span is provided, the chart mode follows a format similar to that of the chart or timechart commands. When a span is provided, the mstats chart mode format resembles that of the timechart command, and can support at most one group-by field, which is used as the series splitting field. The mstats charting mode is valid only when prestats=f. Default: true chart Syntax: chart= Description: When set to chart=t, the mstats data output has a format suitable for charting. When backfill=true, the mstats command runs a search on historical data to backfill events before searching the in-memory real-time data. Default: false backfill Syntax: backfill= Description: Valid only with real-time searches that have a time window. This argument runs the mstats command and adds the results to an existing set of results instead of generating new results. ![]() Optional arguments append Syntax: append= Description: Valid only when prestats=true. See Stats metric term options for details on the and syntax options. In these cases you can apply a wildcard to catch all of the permutations of the metric_name. You only need to use the syntax in cases where a single metric may be represented by several different metric names, such as cpu.util and cpu.utilization. You cannot blend the syntax and the syntax for most cases. Use for cases where a wildcard can be used to represent several metrics. Use to perform statistical calculations on one or more metrics that you name in the argument. Required arguments Syntax: | Description: Provides two options for performing statistical calculations on metrics. The mstats command provides the best search performance when you use it to search a single metric_name value or a small number of metric_name values. When you use mstats in a real-time search with a time window, a historical search runs first to backfill the data. You can use mstats in historical searches and real-time searches. This command performs statistics on the measurement, metric_name, and dimension fields in metric indexes. ![]() Use the mstats command to analyze metrics.
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