064842450b
This change modifies the behavior of span allocations to no longer prefer the free treap over the scavenged treap. While there is an additional cost to allocating out of the scavenged treap, the current behavior of preferring the unscavenged spans can lead to unbounded growth of a program's virtual memory footprint. In small programs (low # of Ps, low resident set size, low allocation rate) this behavior isn't really apparent and is difficult to reproduce. However, in relatively large, long-running programs we see this unbounded growth in free spans, and an unbounded amount of heap growths. It still remains unclear how this policy change actually ends up increasing the number of heap growths over time, but switching the policy back to best-fit does indeed solve the problem. Change-Id: Ibb88d24f9ef6766baaa7f12b411974cc03341e7b Reviewed-on: https://go-review.googlesource.com/c/148979 Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
||
|---|---|---|
| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS | ||
| favicon.ico | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| robots.txt | ||
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.