OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 9 mins read

Analyzing CPU, off-CPU and Disk I/O Usage of Java Applications (Using OpenResty XRay)

openresty-xray java memory cpu

• High CPU usage issues in Java applications
• CPU blocking issues in Java applications
• High disk I/O issues in Java applications
• Supported Java versions and operating systems
• Performance impact and overhead
• Future plans

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 5 mins read

Locate Large Memory Objects inside PHP Processes (using OpenResty XRay)

tutorial openresty-xray php memory

• Problem: high memory usage
• Use the guided analysis feature of OpenResty XRay to find the largest Perl objects or values taking the most RAM
• Automatic analysis and reports
• What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 5 mins read

Locate Large Memory Objects inside Perl Processes (using OpenResty XRay)

tutorial openresty-xray perl memory

• Problem: high memory usage
• Use the guided analysis feature of OpenResty XRay to find the largest Perl objects or values taking the most RAM
• Automatic analysis and reports
• What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 6 mins read

How Python Django's Application Uses Memory Internally (Using OpenResty XRay)

tutorial openresty-xray python memory django

• Problem: high memory usage
• Use the guidede analysis feature of OpenResty XRay to analyze the django application
• Automatic analysis and reports
• What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 5 mins read

Find the largest Python objects or values taking the most RAM (using OpenResty XRay)

tutorial openresty-xray python memory

• Problem: high memory usage
• Use the guided analysis feature of OpenResty XRay to find the largest Python objects or values taking the most RAM
• Automatic analysis and reports
• What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 7 mins read

Memory and CPU usage statistics among Kong plugins online (using OpenResty XRay)

openresty-xray kong nginx openresty lua memory cpu

• CPU usage among all Kong plugins in a server process
• Memory usage among all Kong plugins in a server process
• Extra overhead for the servers

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 10 mins read

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

nginx openresty memory openresty-xray dynamic-tracing

• An empty zone
• Filling entries of similar sizes
• Deleting odd-numbered keys
• Deleting the keys in the first half
• Mitigating Fragmentation

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 13 mins read

How OpenResty and Nginx Shared Memory Zones Consume RAM

nginx openresty memory openresty-xray dynamic-tracing

• Slabs and pages
• What is allocated is not what is paid for
• Fake Memory Leaks
• HUP reload

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 11 mins read

How OpenResty and Nginx Allocate and Manage Memory

nginx openresty memory luajit openresty-xray dynamic-tracing

• On The System Level
• On The Application Level
• For Traditional Nginx Servers

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 16 mins read

The LuaJIT GC64 Mode

luajit openresty memory openresty-xray

• The Old Memory Limit
  • When Hitting The Memory Limit
  • The Memory Limit Is Per Process
  • GC-Managed Memory
  • Memory Allocated Outside GC
  • Extending The x64 Mode to The 4 GB Limit
• The New GC64 Mode
  • How to Enable The GC64 Mode
  • Performance Impact
  • Debugging and Profiling Tool Chains