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Jemalloc Alternatives
Similar projects and alternatives to jemalloc
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Redis
Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs, Bitmaps.
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tbb
Discontinued oneAPI Threading Building Blocks (oneTBB) [Moved to: https://github.com/oneapi-src/oneTBB]
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ck
Concurrency primitives, safe memory reclamation mechanisms and non-blocking (including lock-free) data structures designed to aid in the research, design and implementation of high performance concurrent systems developed in C99+.
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rpmalloc
Public domain cross platform lock free thread caching 16-byte aligned memory allocator implemented in C
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Hoard
The Hoard Memory Allocator: A Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac.
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NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better jemalloc alternative or higher similarity.
jemalloc discussion
jemalloc reviews and mentions
Posts with mentions or reviews of jemalloc.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-10-22.
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Show HN: Rust Web Framework
jemalloc (as opposed to GNU libc and LLVM) sometimes performs better. [1]
[1] https://jemalloc.net/
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Training AI Models on CPU on AWS EC2
There are a number of opportunities for optimizing the use of the underlying CPU resources. These include optimizing memory management and thread allocation to the structure of the underlying CPU hardware. Memory management can be improved through the use of advanced memory allocators (such as Jemalloc and TCMalloc) and/or reducing memory accesses that are slower (i.e., across NUMA nodes). Threading allocation can be improved through appropriate configuration of the OpenMP threading library and/or use of Intel's Open MP library.
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Adding 16 KB Page Size to Android
Certain build processes determine the page size at compile time and assume it's the same at run time, and fail if it is not: https://github.com/jemalloc/jemalloc/issues/467
Some memory-mapped files formats have assumptions about page granularity: https://bugzilla.redhat.com/show_bug.cgi?id=1979804
The file format issue applies to ELF as well. Some people patch their toolchains (or use suitable linker options) to produce slightly smaller binaries that can only be loaded if the page size is 4K, even though the ABI is pretty clear in that you should link for compatibility with up to 64K pages.
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Mimalloc Cigarette: Losing one week of my life catching a memory leak (Rust)
jemalloc has its own problem with threads - if you have a multi-threaded application that uses jemalloc on all threads except the main thread, then the cleanup that jemalloc runs on main thread exit will segfault. In $dayjob we use jemalloc as a sub-allocator in specific arenas (the rest of the application uses libc malloc, but for some cases it allocates pages using mmap and then uses jemalloc to partition them). $dayjob's code is written in Rust, whose unit test framework defaults to running tests in one or more threads and the main thread of the test binary just orchestrates them. So the test binary triggers this segfault reliably.
( https://github.com/jemalloc/jemalloc/issues/1317 Unlike what the title says, it's not Windows-specific.)
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Resource observability case study: jemalloc in Android builds
As a demonstration, I want to measure something that caught my attention months ago—an interesting topic brought up by Jason Pearson: the use of jemalloc as a native memory allocator for Android builds. The initial claim is that this usage brings a reduction in memory usage by optimizing how memory is allocated and deallocated. jemalloc is designed to minimize memory fragmentation and improve performance, particularly in multithreaded applications, making it ideal for resource-intensive builds.
- Userland Rootkits Are Lame
- Show HN: Comprehensive inter-process communication (IPC) toolkit in modern C++
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Finding memory leaks in Postgres C code
jemalloc as well has some handy leak / memory profiling abilities: https://github.com/jemalloc/jemalloc/wiki/Use-Case%3A-Heap-P...
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Speed of Rust vs. C
The worst memory performance bug I ever saw turned out to be heap fragmentation in a non-GC system. There are memory allocators that solve this like https://github.com/jemalloc/jemalloc/tree/dev but ... they do it by effectively running a GC at the block level
As soon as you use atomic counters in a multi-threaded system you can wave goodbye to your scalability too!
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Understanding Mesh Allocator
The linked talk video mentioned they're playing with it in jemalloc and tcmalloc.
I found this https://github.com/jemalloc/jemalloc/issues/1440 but couldn't find tcmalloc doing similar.
These guys are aware of mesh and compare against it: https://abelay.github.io/6828seminar/papers/maas:llama.pdf
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Dec 2024
Stats
Basic jemalloc repo stats
42
9,602
8.7
5 days ago
jemalloc/jemalloc is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of jemalloc is C.
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