macOS
Homebrewverified · 100%
brew install jemalloclocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install jemallocMacPorts ports tree · devel/jemalloc/Portfile · source: api.github.com
brew
Install jemalloc with Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper
Implementation of malloc emphasizing fragmentation avoidance. Version 5.3.0 via Homebrew; verified 2026-06-22.
install
Additional install commands
Linux
Alpine Linux apkverified · 92%
sudo apk add jemallocAlpine Linux edge package indexes · jemalloc · source: dl-cdn.alpinelinux.org
Debian aptverified · 92%
sudo apt install libjemalloc-devDebian stable package indexes · libjemalloc-dev · source: deb.debian.org
Fedora dnfverified · 92%
sudo dnf install jemallocFedora Rawhide package metadata · jemalloc · source: dl.fedoraproject.org
Nixverified · 92%
nix profile install nixpkgs#jemallocnixpkgs package indexes · pkgs/by-name/je/jemalloc/package.nix · source: api.github.com
Arch Linux pacmanverified · 92%
sudo pacman -S jemallocArch Linux sync databases · jemalloc · source: geo.mirror.pkgbuild.com
openSUSE zypperverified · 92%
sudo zypper install jemallocopenSUSE Tumbleweed package metadata · jemalloc · source: download.opensuse.org
overview
Package summary
Implementation of malloc emphasizing fragmentation avoidance
Project links
Commands and aliases
- jemalloc-config
- jemalloc.sh
- jeprof
history
Project history and usage
jemalloc is a general-purpose malloc implementation known in package-manager catalogs because it can be installed as a system allocator, linked into performance-sensitive programs, or preloaded for applications that benefit from predictable allocation behavior.
Project history
The project describes itself as emphasizing fragmentation avoidance and scalable concurrency. Its public history begins with use as the FreeBSD libc allocator in 2005, then broadens in 2010 with developer-facing facilities such as heap profiling and monitoring or tuning hooks.
The project site points to GitHub as the primary repository and treats the manual page and wiki as the two main documentation surfaces. Its branch layout has kept stable release tracking and older stable lines visible, which matters for downstream packaging because allocators are low-level dependencies with conservative upgrade habits.
Adoption history
jemalloc moved from a FreeBSD allocator into a portable package used by applications that care about allocator behavior under concurrency and fragmentation pressure. Its adoption pattern is therefore less like a user-facing CLI and more like a selectable runtime component for databases, language runtimes, services, and performance investigations.
How it is used
Package users commonly install the library and development files, link programs against it, or use loader mechanisms to substitute it for the platform allocator. The bundled tools and scripts such as jemalloc-config, jemalloc.sh, and jeprof make the Homebrew formula useful both for building software and for profiling heap behavior.
Why package nerds care
jemalloc is package-nerd material because it sits below ordinary application code: swapping an allocator can change memory fragmentation, latency, profiling visibility, and production stability without changing the application source. Its presence across many package managers makes allocator choice a reproducible dependency rather than a local build trick.
Timeline
- 2005: jemalloc first came into use as the FreeBSD libc allocator.
- 2010: development broadened to include heap profiling plus monitoring and tuning hooks.
- 2013: the public GitHub repository was created for the project.
- 2016: the project retired legacy mailing lists in favor of GitHub-based project activity.
Related projects
- FreeBSD remains historically important because jemalloc entered production use through its libc allocator.
- jeprof is the related profiling utility shipped with the package for heap-profile analysis.
- Other allocator projects such as system malloc implementations and alternative malloc libraries are the natural comparison set, but jemalloc's packaging role is strongest where a program deliberately opts into its allocation behavior.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 8 platform targets.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
local files
Configuration and credential file locations
These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.
Configuration files
Config paths the tool may read or write during local use.
- Unix
/etc/malloc.conf
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
jemalloc-config | cli | global executable | |
jemalloc.sh | cli | global executable | |
jeprof | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version5.3.0
manager updated2026-06-22
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/jemalloc/jemalloc
- infoNo cached GitHub release or tag data was available.https://github.com/jemalloc/jemallocnone confidence
install metadata
Package metadata
| Package key | brew:jemalloc |
|---|---|
| Version | 5.3.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/jemalloc |
| Homepage | https://jemalloc.net/ |
| Repository | https://github.com/jemalloc/jemalloc |
| Upstream docs | https://github.com/jemalloc/jemalloc/wiki |
| License | BSD-2-Clause |
| Source archive | https://github.com/jemalloc/jemalloc/releases/download/5.3.0/jemalloc-5.3.0.tar.bz2 |
| Last updated | 2026-06-22T14:03:49-07:00 |
| Pulse | updated |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | jemalloc |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Debian apt95%
libjemalloc-dev 5.3.0-3
development files and documentation for jemalloc
sudo apt install libjemalloc-dev- Section: libdevel
- Architecture: amd64
- Source Package: jemalloc
- 1 dependencies
- 1 optional deps
- normalized package name match
- Matched by: Jemalloc
Debian apt95%
libjemalloc2 5.3.0-3
general-purpose scalable concurrent malloc(3) implementation
sudo apt install libjemalloc2- Section: libs
- Architecture: amd64
- Source Package: jemalloc
- 3 dependencies
- normalized package name match
- Matched by: Jemalloc
Nix95%
jemalloc
nix profile install nixpkgs#jemalloc- normalized package name match
- Matched by: Jemalloc
Ubuntu apt95%
libjemalloc-dev 5.3.0-2build1
development files and documentation for jemalloc
sudo apt install libjemalloc-dev- Section: universe/libdevel
- Architecture: amd64
- Source Package: jemalloc
- 1 dependencies
- 1 optional deps
- normalized package name match
- Matched by: Jemalloc
Ubuntu apt95%
libjemalloc2 5.3.0-2build1
general-purpose scalable concurrent malloc(3) implementation
sudo apt install libjemalloc2- Section: universe/libs
- Architecture: amd64
- Source Package: jemalloc
- 3 dependencies
- normalized package name match
- Matched by: Jemalloc
apk95%
jemalloc 5.3.0-r6
general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support
sudo apk add jemalloc- License: BSD-2-Clause
- Architecture: x86_64
- Source Package: jemalloc
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Jemalloc
apk95%
jemalloc-dev 5.3.0-r6
general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support (development files)
sudo apk add jemalloc-dev- License: BSD-2-Clause
- Architecture: x86_64
- Source Package: jemalloc
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Jemalloc
apk95%
jemalloc-doc 5.3.0-r6
general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support (documentation)
sudo apk add jemalloc-doc- License: BSD-2-Clause
- Architecture: x86_64
- Source Package: jemalloc
- normalized package name match
- Matched by: Jemalloc
apk95%
jemalloc-static 5.3.0-r6
general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support (static library)
sudo apk add jemalloc-static- License: BSD-2-Clause
- Architecture: x86_64
- Source Package: jemalloc
- normalized package name match
- Matched by: Jemalloc
dnf95%
jemalloc 5.3.0-14.fc44
General-purpose scalable concurrent malloc implementation
sudo dnf install jemalloc- License: LicenseRef-Callaway-BSD
- Category: Unspecified
- Architecture: i686
- Source Package: jemalloc
- 5 dependencies
- 2 provides
- normalized package name match
- Matched by: Jemalloc
dnf95%
jemalloc-devel 5.3.0-14.fc44
Development files for jemalloc
sudo dnf install jemalloc-devel- License: LicenseRef-Callaway-BSD
- Category: Unspecified
- Architecture: i686
- Source Package: jemalloc
- 6 dependencies
- 2 provides
- normalized package name match
- Matched by: Jemalloc
pacman95%
jemalloc 1:5.3.1-2
General-purpose scalable concurrent malloc implementation
sudo pacman -S jemalloc- License: BSD-2-Clause
- Architecture: x86_64
- 5 dependencies
- 1 provides
- 1 optional deps
- normalized package name match
- Matched by: Jemalloc
zypper95%
jemalloc 5.3.1-1.2
General-purpose scalable concurrent malloc implementation
sudo zypper install jemalloc- License: BSD-2-Clause
- Category: Development/Libraries/C and C++
- Architecture: x86_64
- Source Package: jemalloc
- 3 dependencies
- 1 provides
- normalized package name match
- Matched by: Jemalloc
zypper95%
jemalloc-devel 5.3.1-1.2
Development files for jemalloc
sudo zypper install jemalloc-devel- License: BSD-2-Clause
- Category: Development/Libraries/C and C++
- Architecture: x86_64
- Source Package: jemalloc
- 2 dependencies
- 2 provides
- normalized package name match
- Matched by: Jemalloc
zypper95%
libjemalloc2 5.3.1-1.2
General-purpose scalable concurrent malloc implementation
sudo zypper install libjemalloc2- License: BSD-2-Clause
- Category: System/Libraries
- Architecture: x86_64
- Source Package: jemalloc
- 4 dependencies
- 2 provides
- normalized package name match
- Matched by: Jemalloc
MacPorts95%
jemalloc
sudo port install jemalloc- normalized package name match
- Matched by: Jemalloc
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated configuration and credential file locations
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment