Splunk® Enterprise

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Splunk Enterprise version 6.x is no longer supported as of October 23, 2019. See the Splunk Software Support Policy for details. For information about upgrading to a supported version, see How to upgrade Splunk Enterprise.
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How indexed data impacts Splunk Enterprise performance

This topic discusses how data that has already been consumed by Splunk Enterprise affects performance.

Once Splunk Enterprise consumes data and places it into indexes, those indexes grow, taking up disk space. As the indexes grow and available disk space decreases, Splunk Enterprise takes more time to index incoming data because the indexer's disk subsystem takes more time to find space to store the data.

This impacts search as well. On a single indexer, disk throughput splits between indexing (which is ongoing) and search requests (which are interrupts based on requests scheduled by users.) As indexes grow, search slows down because not only does the disk subsystem need to account for search requests, it also needs to handle increasingly longer requests to store incoming data. Depending on the type of search, those kinds of requests can be very I/O-intensive.

Last modified on 15 July, 2014
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This documentation applies to the following versions of Splunk® Enterprise: 6.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.8, 6.0.9, 6.0.10, 6.0.11, 6.0.12, 6.0.13, 6.0.14, 6.0.15, 6.1, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14


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