IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Observability [8.15] ›Application performance monitoring (APM) ›Release notes

APM version 8.1

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APM version 8.1

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APM version 8.1.3
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This release includes an important APM Server bug fix. Users running APM Server version 8.0.0 and above should upgrade immediately.

Bug fixes
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  • Fix a bug that caused the APM Server to run out of memory when it receives events from a high number of APM agents 7809
APM version 8.1.2
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Bug fixes
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  • When gzip compressing Elasticsearch bulk requests, set the end of stream marker 7624
  • Fix setting a timestamp on RUM data when capturing personal data is disabled 7567
  • modelindexer: Fix indexing performance regression due to locking bug 7649
APM version 8.1.1
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Bug fixes
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  • Fix missing stack monitoring metrics 7428
APM version 8.1.0
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Added
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  • Tail-based sampling is now generally available
  • Added several dimensions to the aggregated transaction metrics 7033
Bug fixes
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  • Fix infinite loop in tail-based sampling subscriber causing high CPU and repeated Elasticsearch searches 7211
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