nocache
glommio
nocache | glommio | |
---|---|---|
4 | 29 | |
539 | 2,851 | |
- | 1.5% | |
4.3 | 7.6 | |
about 2 years ago | 10 days ago | |
C | Rust | |
BSD 2-clause "Simplified" License | GNU General Public License v3.0 or later |
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nocache
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How to disable "Fake" file transfers?
I have considered other techniques like using https://github.com/Feh/nocache etc but never felt the pain so bad that I could make the effort. You can give that a shot though
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Rsync slow transferspeed on larger files
use nocache rsync ... to avoid RAM buffering. nocache is available in Linux Mint repos, and at https://github.com/Feh/nocache
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Linux Kernel: The multi-generational LRU
nocache¹. It is LD_PRELOAD based so will only function within the normal limitations of that. It also comes with a couple of tools for examining and modifying the file cache, which makes it useful to judge its value in your environment.
One of my biggest use cases for it is with soxi, which I use solely for playlist manipulation. I don't alias my source tree search tools, because invariably I'm going to want all that stuff in the cache anyway for builds and such.
¹ https://github.com/Feh/nocache
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Is it better to use cat, dd, pv or another procedure to copy a CD/DVD?
Also check https://github.com/Feh/nocache
glommio
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I want to share my latest hobby project, dbeel: A distributed thread-per-core nosql db written in rust
I used glommio as the async executor (instead of something like tokio), and it is wonderful. For people wondering whether it's "good enough" or to use C++ and seastar (as I have thought about a lot before starting this project), take the leap of faith, it's fast - both in terms of run time and to code.
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The State of Async Rust
My understanding is you always need a runtime, somethings needs to drive the async flow. But there are others on the market, just not without the.. market domination... of tokio.
https://github.com/smol-rs/smol looks promising simply for being minimal
https://github.com/bytedance/monoio looks potentially easier to work with than tokio
https://github.com/DataDog/glommio is built around linux io_uring and seems somewhat promising for performance reasons.
I haven't played with any of these yet, because Tokio is unfortunately the path of least resistance. And a bit viral in how it's infected tings.
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Learning Async Rust with Too Many Web Servers
I think you missed one which is based on io_uring [1].
In my benchmarks with a slightly tweaked version it was 2x faster than Nginx and and 30x faster than Python's SimpleHttpServer.
[1] https://github.com/DataDog/glommio/blob/master/examples/hype...
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How much reason is there to be multi-threaded in the k8s environment
b) It's proven now e.g Seastar, Glommio that the fastest way to run a multi-threaded application is to have one instance with one thread pinned per CPU core. Then to have fibers/lightweight threads on top handling all of the asynchronous code. Your approach of lots of instances is the slowest so there will be a ton of unnecessary thread context-switching.
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Why does Actix-web's handler not require Send?
I assume Tokio itself, see e.g monoio or glommio, but also Seastar for C++.
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How does async Rust work
https://github.com/DataDog/glommio Rust thread per core library.
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Use io_uring for network I/O
> Few of us have really figured out io_uring. But that doesn't mean it is slower.
seastar.io is a high level framework that I believe has "figured out" io_uring, with additional caveats the framework imposes (which is honestly freeing).
Additionally the rust equivalent: https://github.com/DataDog/glommio
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Is async runtime (Tokio) overhead significant for a "real-time" video stream server?
This use case is perfect for https://github.com/DataDog/glommio which is a thread-per-core runtime that is appropriate for latency sensitive code.
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Blessed.rs – An unofficial guide to the Rust ecosystem
It's worth mentioning: Under "Async Executors", for "io_uring" there is only "Glommio"
I recently found out that ByteDance has a competitor library which supposedly has better performance:
https://github.com/bytedance/monoio
https://github.com/DataDog/glommio/issues/554
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Building a High-Performance DB Buffer Pool in Zig W\ Io_uring New Fixed-Buffers
FYI, Datadog has a Rust library for scheduling things to run thread-per-core with io_uring
It'd be really useful for DB use cases:
https://github.com/DataDog/glommio