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OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 2026 6 mins read

How to Trace PHP Exceptions in Production Without Restarting

tutorial openresty-xray PHP Exceptions

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

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

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Install OpenResty XRay’s Agents on Kubernetes cluster

tutorial openresty-xray k8s Agent install

Logging in to the Console
Installing the Agent on Kubernetes cluster
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

Logging in to the Console
Installing the Agent on Kubernetes cluster
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 2026 6 mins read

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

tutorial openresty-xray rust disk I/O

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

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 Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

Introduction to OpenResty XRay Mobile Apps

tutorial openresty-xray mobile app

Download and install OpenResty XRay for Android
Sign into OpenResty XRay
Automatic analysis report
View the performance chart data on the dashboard page
Guided analysis feature
What is OpenResty XRay

Download and install OpenResty XRay for Android
Sign into OpenResty XRay
Automatic analysis report
View the performance chart data on the dashboard page
Guided analysis feature
What is OpenResty XRay

OpenResty XRay Aug 11, 2026

OpenResty XRay Updated Aug 11, 2026 5 mins read

PHP Memory Profiler: Locate the Largest Memory Objects in a Live PHP Process

tutorial openresty-xray php memory

Symptom: a PHP process using high memory in top
Profile the process with OpenResty XRay guided analysis to find the largest PHP objects
Trace the largest object back to its source line
Monitor PHP process memory automatically with Insights reports
FAQ
What is OpenResty XRay

Symptom: a PHP process using high memory in top
Profile the process with OpenResty XRay guided analysis to find the largest PHP objects
Trace the largest object back to its source line
Monitor PHP process memory automatically with Insights reports
FAQ
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 7 mins read

Use C++ to Dynamic-Trace C++ Applications

stl c++ ebpf openresty-xray dynamic-tracing

Setting Up the Target C++ Program
Crafting the C++ (or Y++) Analyzer
Operationalizing the Target and Analyzer
Advancing Support for Complex C++ Applications
About the Debug Symbols

Setting Up the Target C++ Program
Crafting the C++ (or Y++) Analyzer
Operationalizing the Target and Analyzer
Advancing Support for Complex C++ Applications
About the Debug Symbols

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

Pinpointing the hottest Erlang code paths with high CPU usage (using OpenResty XRay)

tutorial openresty-xray Erlang CPU

Problem: high CPU usage
Spot the CPU-hottest Erlang code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Spot the CPU-hottest Erlang code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 2026 6 mins read

How to Trace Perl Exceptions in Production Without Restarting

tutorial openresty-xray Perl Exceptions

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

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

OpenResty XRay Jul 24, 2026

OpenResty XRay Updated Jul 24, 2026 6 mins read

Nginx 'No Debugging Symbols Found'? Rebuild Them Automatically with OpenResty XRay

tutorial openresty-xray debug-symbol nodwarf

Confirming Nginx Is Stripped and Debug Symbols Are Missing
Rebuild Missing Nginx Debug Symbols Automatically — No Recompile Needed
Continuous Analysis: Daily and Weekly Insights Reports
FAQ: nginx-dbg, recompiling, and profiling stripped binaries

Confirming Nginx Is Stripped and Debug Symbols Are Missing
Rebuild Missing Nginx Debug Symbols Automatically — No Recompile Needed
Continuous Analysis: Daily and Weekly Insights Reports
FAQ: nginx-dbg, recompiling, and profiling stripped binaries

OpenResty XRay Jul 24, 2026

OpenResty XRay Updated Jul 24, 2026 7 mins read

Automatic Core Dump Analysis (using OpenResty XRay)

openresty-xray core dump lua backtrace luajit dynamic tracing eBPF

Locate the core dump file from a crashed OpenResty/Nginx worker
Start automatic (guided) core dump analysis in OpenResty XRay
Read the signal, CPU registers, and C backtrace of the crash
Follow the Lua backtrace to the exact crashing line
Automatic Insights reports for online core dumps

Locate the core dump file from a crashed OpenResty/Nginx worker
Start automatic (guided) core dump analysis in OpenResty XRay
Read the signal, CPU registers, and C backtrace of the crash
Follow the Lua backtrace to the exact crashing line
Automatic Insights reports for online core dumps

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 4 mins read

Install OpenResty XRay’s Agents on Amazon Linux via Package Bundles

tutorial openresty-xray Amazon-linux2 Agent install

Logging in to the Console
Installing the Agent via Bundle Packages
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

Logging in to the Console
Installing the Agent via Bundle Packages
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 2026 6 mins read

Debugging High Disk I/O in Go Services on Linux

tutorial openresty-xray go golang disk I/O

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 Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

How CPU Time is Spent inside Envoy Servers (using OpenResty XRay)

tutorial openresty-xray CPU Envoy

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive C++ code paths inside Envoy Servers
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive C++ code paths inside Envoy Servers
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Pinpointing the hottest PHP code paths with high CPU usage (using OpenResty XRay)

tutorial openresty-xray PHP CPU

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the CPU-hottest PHP code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the CPU-hottest PHP code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 2026 6 mins read

How to Trace Go Panics in Production Without Restarting

tutorial openresty-xray Go Exceptions

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

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

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

How CPU Time is Spent inside PHP Laravel Apps (using OpenResty XRay)

tutorial openresty-xray Laravel PHP

Problem: high CPU usage
Use the Guidede Analysis Feature of OpenResty XRay to Analyze CPU Distribution in Laravel Application
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the Guidede Analysis Feature of OpenResty XRay to Analyze CPU Distribution in Laravel Application
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

Find Blocking Perl Code Paths Holding back CPU Usage (Using OpenResty XRay)

tutorial openresty-xray perl off-cpu

Problem: low CPU usage
Use the guided analysis feature of OpenResty XRay to spot the blocking Perl code paths
Automatic analysis and reports
What is OpenResty XRay
About The Author

Problem: low CPU usage
Use the guided analysis feature of OpenResty XRay to spot the blocking Perl code paths
Automatic analysis and reports
What is OpenResty XRay
About The Author

OpenResty XRay Jul 23, 2026

OpenResty XRay Updated Jul 23, 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

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

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

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

tutorial openresty-xray prometheus garbage collection go golang

Problem: high CPU usage
Use the guidede 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 guidede analysis feature of OpenResty XRay to spot the CPU-hottest Go code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jul 24, 2026

OpenResty XRay Updated Jul 24, 2026 8 mins read

How to Diagnose 504 Gateway Timeout Errors in OpenResty & Nginx

tutorial openresty-xray 504 timeout

Confirm HTTP 504 gateway timeout errors in the OpenResty/Nginx access log
Diagnose the 504 root cause with OpenResty XRay Guided Analysis
Slow upstream, slow network link, or a too-short timeout setting
Automatic root-cause reports on the Insights page

Confirm HTTP 504 gateway timeout errors in the OpenResty/Nginx access log
Diagnose the 504 root cause with OpenResty XRay Guided Analysis
Slow upstream, slow network link, or a too-short timeout setting
Automatic root-cause reports on the Insights page

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

How CPU Time is Spent inside Go’s CockroachDB (using OpenResty XRay)

tutorial openresty-xray cpu Go CockroachDB

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive Go code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive Go code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Performance Overhead of OpenResty XRay when Tracing Perl Apps

tutorial openresty-xray perl overhead

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

OpenResty XRay Aug 11, 2026

OpenResty XRay Updated Aug 11, 2026 6 mins read

Locate the Largest Memory Objects in a Live Perl Process

tutorial openresty-xray perl memory

Symptom: a Perl process using high memory in top
Profile the process with OpenResty XRay guided analysis to find the largest Perl objects
Trace the largest object back to its source file
Monitor Perl process memory automatically with Insights reports
FAQ
What is OpenResty XRay

Symptom: a Perl process using high memory in top
Profile the process with OpenResty XRay guided analysis to find the largest Perl objects
Trace the largest object back to its source file
Monitor Perl process memory automatically with Insights reports
FAQ
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Measuring the Performance Overhead of OpenResty XRay When Profiling Go Applications

tutorial openresty-xray go overhead

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Install OpenResty XRay’s Agents on Ubuntu via Deb Packages

tutorial openresty-xray Ubuntu Agent install

Logging in to the Console
Installing the Agent via Deb Packages
Checking the Agent Status and Logs
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

Logging in to the Console
Installing the Agent via Deb Packages
Checking the Agent Status and Logs
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 2 mins read

Performance Impact of OpenResty XRay when Tracing PHP Apps

tutorial openresty-xray php overhead

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 2 mins read

Performance Impact of OpenResty XRay when Tracing Python Apps

tutorial openresty-xray python overhead

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 2 mins read

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

tutorial openresty-xray rust overhead

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

Process Performance Before Running Analysis
Performance Impact When the Analyzer is Running
Impact Measurement on Throughput and Latency
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 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 11, 2026

OpenResty XRay Updated Aug 11, 2026 6 mins read

Django Memory Profiler: Analyze Object-Level Memory Usage in a Live App

tutorial openresty-xray python memory django

Spot a high-memory Django process with ps
Profile the Django app’s memory usage with Guided Analysis
Read the flame graph: which Python module uses the most memory
Monitor Django memory usage automatically with Insights
What is OpenResty XRay

Spot a high-memory Django process with ps
Profile the Django app’s memory usage with Guided Analysis
Read the flame graph: which Python module uses the most memory
Monitor Django memory usage automatically with Insights
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 4 mins read

Install OpenResty XRay’s Agents on CentOS via RPM Packages

tutorial openresty-xray CentOS Agent install

Logging in to the Console
Installing the Agent via RPM Packages
Checking the Agent Status and Logs
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

Logging in to the Console
Installing the Agent via RPM Packages
Checking the Agent Status and Logs
Configuring and Detecting Applications
Initiating Analyzers and Viewing Insights
Install Another Agent
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

How CPU time is spent inside Rust’s Sled library (using OpenResty XRay)

tutorial openresty-xray cpu Sled Rust

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive Rust code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the most CPU-intensive Rust code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Aug 11, 2026

OpenResty XRay Updated Aug 11, 2026 5 mins read

Python Memory Profiler: Find the Largest Objects Eating RAM Without Code Changes

tutorial openresty-xray python memory

Find which Python process is using the most memory
Profile Python memory with guided analysis: find the largest objects and their modules
Automatically monitor Python memory usage with scheduled reports
What is OpenResty XRay

Find which Python process is using the most memory
Profile Python memory with guided analysis: find the largest objects and their modules
Automatically monitor Python memory usage with scheduled reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

How CPU time is spent inside Go's etcd server (using OpenResty XRay)

tutorial openresty-xray go cpu etcd

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Go code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Go code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 6 mins read

How CPU time is spent inside llama.cpp + LLaMA2 (using OpenResty XRay)

tutorial openresty-xray LLM cpu generative-AI llama2 llama.cpp profiling AI

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest C++ code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest C++ code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Find Blocking Go Code Paths Holding back CPU Usage (Using OpenResty XRay)

tutorial openresty-xray go cpu

Problem: low CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the blocking Go code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: low CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the blocking Go code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Pinpointing the hottest Go code paths with high CPU usage (using OpenResty XRay)

tutorial openresty-xray go cpu

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Go code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Go code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Pinpointing the blocking Python code paths (using OpenResty XRay)

tutorial openresty-xray python off-cpu

Problem: low CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the blocking Python code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: low CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the blocking Python code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Two bugs in Linux kernels' tracing subsystem (found by OpenResty XRay)

openresty-xray dynamic-tracing linux-kernel bugs

Kernel deadlocks in user-space memory reading
Data races in x86 breakpoint insertion of the kernel
What is OpenResty XRay

Kernel deadlocks in user-space memory reading
Data races in x86 breakpoint insertion of the kernel
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read

Pinpointing hottest Perl code paths (using OpenResty XRay)

tutorial openresty-xray perl cpu

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Perl code paths
Automatic analysis and reports
What is OpenResty XRay

Problem: high CPU usage
Use the guidede analysis feature of OpenResty XRay to spot the hottest Perl code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 5 mins read