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cpu

How CPU Time is Spent inside Go’s CockroachDB (using 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
  • 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

How CPU time is spent inside Rust’s Sled library (using 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
  • 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

How CPU time is spent inside Go's etcd server (using 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
  • 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

How CPU time is spent inside llama.cpp + LLaMA2 (using 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
  • 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

Find Blocking Go Code Paths Holding back CPU Usage (Using 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
  • 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

Pinpointing the hottest Go code paths with high CPU usage (using 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
  • 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

Pinpointing hottest Perl code paths (using 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
  • 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

Pinpointing hottest Lua code paths in online OpenResty/Nginx servers (using OpenResty XRay)

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

How we solved a CPU bottleneck caused by Lua exceptions in a custom Kong plugin (using OpenResty XRay)

  • The problem: high CPU usage in Kong servers
  • The analysis & report
  • The result: improved performance and reduced CPU usage
Photo by Yichun Zhang
  • The problem: high CPU usage in Kong servers
  • The analysis & report
  • The result: improved performance and reduced CPU usage

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

  • 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
Photo by Yichun Zhang
  • 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

Analyzing the Most CPU-Consuming Requests in OpenResty or Nginx

  • System Environment
  • CPU-Hottest Request Hostnames
  • CPU-Hottest Request URIs
  • Digging Deeper
  • Running Directly in the Web Console
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools
Photo by Yichun Zhang
  • System Environment
  • CPU-Hottest Request Hostnames
  • CPU-Hottest Request URIs
  • Digging Deeper
  • Running Directly in the Web Console
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools

Introduction to Lua-Land CPU Flame Graphs

  • What is a Flame Graph
  • Simple Lua samples
  • Complicated Lua applications
  • Sampling overhead
  • Safety
  • Compatibility
  • Other types of Lua-land Flame Graphs
Photo by Guido Jansen
  • What is a Flame Graph
  • Simple Lua samples
  • Complicated Lua applications
  • Sampling overhead
  • Safety
  • Compatibility
  • Other types of Lua-land Flame Graphs
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