OpenResty's Official Blog for Technologies & Products

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 6 mins read

Why Your Rust Process Has High Disk I/O (and How to Find the Cause)

tutorial openresty-xray rust disk-io

• Identifying the Rust process with high disk I/O
• Tracing the hottest Rust disk 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 5 mins read

How to Trace Rust Panics in Production Without Restarting

tutorial openresty-xray rust exceptions

• How to detect and analyze exceptions inside live Rust applications
• Automatic analysis and reports
• What is OpenResty XRay
• FAQ

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 7 mins read

Tested in Production: The Performance Impact of OpenResty XRay When Tracing Rust Applications

tutorial openresty-xray rust overhead

• What Happens to CPU, Memory, and Load During Profiling?
• How Much Does Profiling Affect Throughput and Latency?
• OpenResty XRay vs. Always-On APM Agents
• FAQ

OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 7 mins read

Rust CPU Profiling: Find the Hottest Code Paths in Sled with OpenResty XRay

tutorial openresty-xray cpu sled rust profiling flame-graph

• The problem: a Sled-based cache service using over 100% CPU
• Profile the running Rust process with Guided Analysis
• Read the Rust CPU flame graph: the #1 hottest code path
• The #2 hottest code path: get_inner and view_for_key
• Automatic Rust CPU analysis reports
• Frequently asked questions