859e8eb730
In order to minimize latency as much as possible, we want to allow kubernetes containers to make use of CPUs which have been specified as "isolated" via the kernel boot args. This commit creates an isolcpus device plugin, which detects the isolated CPUs and exports them to kubelet via the device plugin API. See kubernetes/plugins/isolcpus-device-plugin/files/README.md for more information on the behaviour and design choices for this commit. When we move to a newer version of the Intel device plugin manager we may be able to simplify some of this. See the above README.md file for details. Change-Id: I3bfe04ab6e7fbafefa63f6dc43cb2ed79a52579f Story: 2008760 Task: 42165 Signed-off-by: Chris Friesen <chris.friesen@windriver.com> |
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| .. | ||
| .editorconfig | ||
| .gitignore | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| README.md | ||
| fen.go | ||
| fsnotify.go | ||
| inotify.go | ||
| inotify_poller.go | ||
| kqueue.go | ||
| open_mode_bsd.go | ||
| open_mode_darwin.go | ||
| windows.go | ||
README.md
File system notifications for Go
fsnotify utilizes golang.org/x/sys rather than syscall from the standard library. Ensure you have the latest version installed by running:
go get -u golang.org/x/sys/...
Cross platform: Windows, Linux, BSD and macOS.
| Adapter | OS | Status |
|---|---|---|
| inotify | Linux 2.6.27 or later, Android* | Supported  |
| kqueue | BSD, macOS, iOS* | Supported |
| ReadDirectoryChangesW | Windows | Supported |
| FSEvents | macOS | Planned |
| FEN | Solaris 11 | In Progress |
| fanotify | Linux 2.6.37+ | |
| USN Journals | Windows | Maybe |
| Polling | All | Maybe |
* Android and iOS are untested.
Please see the documentation and consult the FAQ for usage information.
API stability
fsnotify is a fork of howeyc/fsnotify with a new API as of v1.0. The API is based on this design document.
All releases are tagged based on Semantic Versioning. Further API changes are planned, and will be tagged with a new major revision number.
Go 1.6 supports dependencies located in the vendor/ folder. Unless you are creating a library, it is recommended that you copy fsnotify into vendor/github.com/fsnotify/fsnotify within your project, and likewise for golang.org/x/sys.
Contributing
Please refer to CONTRIBUTING before opening an issue or pull request.
Example
See example_test.go.
FAQ
When a file is moved to another directory is it still being watched?
No (it shouldn't be, unless you are watching where it was moved to).
When I watch a directory, are all subdirectories watched as well?
No, you must add watches for any directory you want to watch (a recursive watcher is on the roadmap #18).
Do I have to watch the Error and Event channels in a separate goroutine?
As of now, yes. Looking into making this single-thread friendly (see howeyc #7)
Why am I receiving multiple events for the same file on OS X?
Spotlight indexing on OS X can result in multiple events (see howeyc #62). A temporary workaround is to add your folder(s) to the Spotlight Privacy settings until we have a native FSEvents implementation (see #11).
How many files can be watched at once?
There are OS-specific limits as to how many watches can be created:
- Linux: /proc/sys/fs/inotify/max_user_watches contains the limit, reaching this limit results in a "no space left on device" error.
- BSD / OSX: sysctl variables "kern.maxfiles" and "kern.maxfilesperproc", reaching these limits results in a "too many open files" error.