Virtual file system retained information about 34796 files, 3838 directories and 128 missing files since last buildĢ54 actionable tasks: 3 executed, 251 up-to-date Received 14 file system events since last build while watching 1 hierarchies gradlew -watch-fs =true :core:testClasses Note: we are enabling verbose logging to see the effect of file system watching. Keep the virtual file system during and between builds.Start watching the file system for changes.Once it’s enabled, the Gradle daemon will do the following:
You can enable file system watching by passing the command line switch -watch-fs or setting a Gradle property. Other operating systems are not supported. Gradle ships with the necessary integration for the recent versions of Linux, macOS, and Windows. Since the daemon knows what changed since the previous build, it can re-use the information in the virtual file system for all the unchanged locations, avoiding unnecessary disk I/O. When file system watching is enabled, the daemon instructs the operating system to notify it about changes on disk. Without file system watching, the daemon does not know what happens to the file system in-between builds, and therefore it must discard all the collected information about the file system at the end of each build. The daemon stores this information about the file system till the end of the current build in memory in what we call the virtual file system. In order to determine whether Gradle needs to execute a task, it needs to check if any of its input and output files have changed since the last build. We are planning to enable the feature by default in a later release. Since Gradle 6.7 this feature is ready for production use. This significantly reduces the amount of disk I/O needed to determine what has changed since the previous build. When enabled, it allows Gradle to keep what it has learned about the file system in memory between builds instead of polling the file system on each build. In Gradle 6.5, we have introduced an experimental feature called file system watching that significantly accelerates incremental builds. This blog post has been updated after the feature has become production-ready in Gradle 6.7. We will be discussing upcoming Gradle build tool features that significantly improve feedback time around this use case.
DOCKER MOUNT VOLUME FILEWATCHER DETECT CHANGES SOFTWARE
This is the first installment in a series of blog posts about incremental development–the part of the software development process where you make frequent small changes.