--- title: Faster root cause for slow traces with ClickStack Event... description: ClickStack's Event Deltas feature automates root cause analysis for slow traces by comparing attribute distributions between normal and outlier spans. Instead... canonical: https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-5orihg5as twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Faster root cause for slow traces with ClickStack Event Deltas | daily.dev og:description: ClickStack's Event Deltas feature automates root cause analysis for slow traces by comparing attribute distributions between normal and outlier spans. Instead... og:url: https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-5orihg5as og:image: https://api.daily.dev/og/posts/5oRiHG5AS.png og:image:alt: Faster root cause for slow traces with ClickStack Event Deltas og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Faster root cause for slow traces with ClickStack Event Deltas **[ClickHouse](https://daily.dev/sources/clickhouse)** · 11 min read · 0 upvotes · 0 comments ## Summary ClickStack's Event Deltas feature automates root cause analysis for slow traces by comparing attribute distributions between normal and outlier spans. Instead of manually filtering and grouping spans, SREs can draw a bounding box around high-latency spans in a density heatmap, and Event Deltas automatically surfaces which attributes (e.g., card type, endpoint, deployment version) are disproportionately represented in the slow subset. Recent improvements allow customizing both the y-axis metric and color intensity aggregation, enabling analysis beyond standard span duration — for example, using database response time to pinpoint slow queries. Best practices include focusing on a single service, selecting clean subsets, and ensuring sufficient sample sizes for meaningful comparisons. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Faster root cause for slow traces with ClickStack Event Deltas](https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-hzaqynboo) · ClickHouse · 1 upvotes · 0 comments - [Beyond a Billion Spans: Using Highlights for High-Speed Root Cause Analysis at Scale](https://daily.dev/posts/beyond-a-billion-spans-using-highlights-for-high-speed-root-cause-analysis-at-scale-0tgypdqqy) · Coralogix · 0 upvotes · 0 comments - [What's new in ClickStack - March 2026](https://daily.dev/posts/what-s-new-in-clickstack---march-2026-8k8yvcdfm) · ClickHouse · 2 upvotes · 0 comments - [What's new in ClickStack. November '25.](https://daily.dev/posts/what-s-new-in-clickstack-november-25--okveo1hj8) · ClickHouse · 6 upvotes · 0 comments - [From Trace to Root Cause: Mastering the new Trace Drilldown](https://daily.dev/posts/from-trace-to-root-cause-mastering-the-new-trace-drilldown-jm0s5v0hc) · Coralogix · 0 upvotes · 0 comments --- Tags: [#devops](https://daily.dev/tags/devops), [#observability](https://daily.dev/tags/observability), [#opentelemetry](https://daily.dev/tags/opentelemetry), [#clickhouse](https://daily.dev/tags/clickhouse) [View this post on daily.dev](https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-5orihg5as) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Faster root cause for slow traces with ClickStack Event Deltas","url":"https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-5orihg5as","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/faster-root-cause-for-slow-traces-with-clickstack-event-deltas-5orihg5as"},"datePublished":"2026-06-05T11:54:19.879Z","dateModified":"2026-06-05T11:54:46.798Z","description":"ClickStack's Event Deltas feature automates root cause analysis for slow traces by comparing attribute distributions between normal and outlier spans. 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