Source: Make WordPress: Core Performance

This article highlights several best practices to be aware of when benchmarking and measuring performance. The majority of the best practices apply to both benchmarking and profiling, though they are particularly relevant for benchmarking to ensure clean comparisons, e.g. to assess the performance impact of a WordPress coreCore Core is the set of software required…

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This article describes how to use the Server-Timing APIAPI An API or Application Programming Interface is a software intermediary that allows programs to interact with each other and share data in limited, clearly defined ways. to benchmark server-side performance in WordPress. What is the Server-Timing headerHeader The header of your site is typically the first…

In software engineering, profiling is the process of analyzing performance attributes of an application during runtime. A profiler is a tool that monitors a program and captures information like how often functions and methods are called, how long each takes to execute, how much memory is consumed during various processes, etc. Introduction to XHProf and…

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Measuring performance typically involves two different processes, profiling and benchmarking. Both are essential practices for improving the performance of an application. Depending on the situation only one of the two may be applicable, while other times they complement each other. Profiling is the process of collecting metrics about a program; like execution time, memory used,…

Note: This handbook chapter is under construction. Measuring performance is crucial to identify notable performance improvements and to avoid performance regressions. This is important for WordPress coreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress., but also for every software or tool as part of the WordPress…