fe67ea32bf
This change adds a background scavenging goroutine whose pacing is determined when the heap goal changes. The scavenger is paced to use at most 1% of the mutator's time for most systems. Furthermore, the scavenger's pacing is computed based on the estimated number of scavengable huge pages to take advantage of optimizations provided by the OS. The purpose of this scavenger is to deal with a shrinking heap: if the heap goal is falling over time, the scavenger should kick in and start returning free pages from the heap to the OS. Also, now that we have a pacing system, the credit system used by scavengeLocked has become redundant. Replace it with a mechanism which only scavenges on the allocation path if it makes sense to do so with respect to the new pacing system. Fixes #30333. Change-Id: I6203f8dc84affb26c3ab04528889dd9663530edc Reviewed-on: https://go-review.googlesource.com/c/go/+/142960 Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
||
|---|---|---|
| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| favicon.ico | ||
| robots.txt | ||
README.md
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Download and Install
Binary Distributions
Official binary distributions are available at https://golang.org/dl/.
After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.
Install From Source
If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.
Contributing
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.