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OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 6 mins read

Debugging High Disk I/O in Go Services on Linux

tutorial openresty-xray go disk-io
  • Identifying the Go process with high disk I/O
  • Tracing Go disk read and write code paths with flame graphs
  • Automatic disk I/O analysis and reports
  • What is OpenResty XRay
  • Frequently Asked Questions
  • Identifying the Go process with high disk I/O
  • Tracing Go disk read and write code paths with flame graphs
  • Automatic disk I/O analysis and reports
  • What is OpenResty XRay
  • Frequently Asked Questions

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 7 mins read

Pinpointing CPU-Hottest Go Code Paths Inside Prometheus (using OpenResty XRay)

tutorial openresty-xray prometheus garbage-collection go
  • Problem: high CPU usage
  • Use the guided analysis feature of OpenResty XRay to spot the CPU-hottest Go code paths
  • Automatic analysis and reports
  • What is OpenResty XRay
  • Problem: high CPU usage
  • Use the guided analysis feature of OpenResty XRay to spot the CPU-hottest Go code paths
  • Automatic analysis and reports
  • What is OpenResty XRay

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 6 mins read

CockroachDB High CPU Usage: Profiling a Live Go Server with Flame Graphs

tutorial openresty-xray cpu profiling flame-graph go cockroachdb
  • Problem: CockroachDB high CPU usage
  • Find the most CPU-intensive Go code paths with guided analysis
  • Automatic CPU analysis and reports
  • What is OpenResty XRay
  • Problem: CockroachDB high CPU usage
  • Find the most CPU-intensive Go code paths with guided analysis
  • Automatic CPU analysis and reports
  • What is OpenResty XRay

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 4 mins read

Dynamic-Tracing Custom Go Programs with Custom Ylang Analyzers (using OpenResty XRay)

tutorial openresty-xray ylang analyzer go
  • Insert two key-value Pairs into a Go Variable
  • Write a Customize Ylang Analyzer to Dynamically Trace the Go program
  • Test the Results
  • What is OpenResty XRay
  • Insert two key-value Pairs into a Go Variable
  • Write a Customize Ylang Analyzer to Dynamically Trace the Go program
  • Test the Results
  • What is OpenResty XRay

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 7 mins read

etcd High CPU Usage: Find the Hottest Go Code Paths with Flame Graphs

tutorial openresty-xray go cpu etcd
  • Symptom: etcd consuming over 70% of a CPU core
  • Use OpenResty XRay Guided Analysis to find the hottest Go code paths
  • Automatic etcd CPU monitoring and reports
  • What is OpenResty XRay
  • Symptom: etcd consuming over 70% of a CPU core
  • Use OpenResty XRay Guided Analysis to find the hottest Go code paths
  • Automatic etcd CPU monitoring and reports
  • What is OpenResty XRay

OpenResty XRay Aug 14, 2026

OpenResty XRay Updated Aug 14, 2026 5 mins read

Go Off-CPU Analysis: Tracing a Running Process Stuck at 2% CPU to a Blocking Shell Call

tutorial openresty-xray go cpu
  • The symptom: Go service CPU usage stays low under load
  • Running off-CPU analysis on the live Go process with OpenResty XRay
  • Root cause: a blocking shell command at a single source line
  • Automatic analysis and reports
  • The symptom: Go service CPU usage stays low under load
  • Running off-CPU analysis on the live Go process with OpenResty XRay
  • Root cause: a blocking shell command at a single source line
  • Automatic analysis and reports
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