← Extractions

UringMachine — High Performance Concurrency for Ruby Using io_uring (Sharon Rosner, wroclove.rb 2026)

Sharon Rosner presents UringMachine, a Ruby concurrency library that drives fibers with Linux io_uring. He walks through fiber-based concurrency, the io_uring submission/completion model, and how UringMachine combines them with a run queue, multi-shot operations, provided buffers, SSL integration, and a Ruby fiber scheduler — positioning it as a spiritual successor to EventMachine.

Model

claude-opus-4-7

Ingestion

cd54bfe0

Input tokens

193,424

fresh: 67,348
cached: 82,683
cache write: 43,393

Output tokens

12,618

Duration

175.2s

Roundtrips

Tool calls

Cost

$0.00

Nodes/edges extracted

23 / 57

Read set (nodes/edges)

104 / 2

Nodes (23)

create Multi-shot Operations concept

kind (empty) → concept

name (empty) → Multi-shot Operations

slug (empty) → multi-shot-operations

attrs (empty) → {"category" => "pattern"}

description (empty) → io_uring variants of normal operations — accept, timeout, read, receive — where one SQE yields a continuous stream of...

short_description (empty) → io_uring pattern: submit once, receive many completions.

update Sharon Rosner person

attrs (empty) → {"domain" => "Industrial process control"}

description Ruby developer focused on high-performance concurrency with io_uring. → Ruby developer focused on high-performance concurrency with io_uring. Works in industrial process control, maintainin...

short_description Creator of Polyphony and UringMachine. → Creator of Polyphony and UringMachine; Ruby concurrency developer.

update UringMachine — High Performance Concurrency for Ruby Using io_uring talk

attrs {"type" => "talk"} → {"date" => "2026-04-17", "type" => "talk"}

description Talk on io_uring concurrency in Ruby. → Sharon Rosner's wroclove.rb 2026 talk introducing UringMachine, his Ruby gem that combines fibers with Linux io_uring...

create UringMachine project

kind (empty) → project

name (empty) → UringMachine

slug (empty) → uringmachine

attrs (empty) → {"status" => "active", "license" => "open-source", "language" => "Ruby"}

description (empty) → Ruby concurrency library developed by Sharon Rosner for roughly a year prior to wroclove.rb 2026. A UringMachine inst...

short_description (empty) → Ruby library for fiber-based concurrency driven by Linux io_uring.

create io_uring concept

kind (empty) → concept

name (empty) → io_uring

slug (empty) → io_uring

attrs (empty) → {"category" => "architecture", "platform" => "Linux"}

description (empty) → Linux-specific kernel interface for asynchronous IO, not available on other operating systems. Provides a comprehensi...

short_description (empty) → Linux asynchronous I/O interface based on submission and completion ring buffers.

create Fiber concept

kind (empty) → concept

name (empty) → Fiber

slug (empty) → fiber

attrs (empty) → {"category" => "architecture"}

description (empty) → A fiber is a context of execution that can be suspended and resumed. Each Ruby thread starts with a main/default fibe...

short_description (empty) → Ruby execution context that can be suspended and resumed, used for cooperative concurrency.

create Run Queue concept

kind (empty) → concept

name (empty) → Run Queue

slug (empty) → run-queue

attrs (empty) → {"category" => "pattern"}

description (empty) → Abstraction that holds fibers ready to run. Replaces hardwired fiber-to-fiber transfers: a fiber_switch method adds t...

short_description (empty) → Queue holding ready-to-run fibers, mediating cooperative scheduling.

create Fiber Scheduler concept

kind (empty) → concept

name (empty) → Fiber Scheduler

slug (empty) → fiber-scheduler

attrs (empty) → {"category" => "architecture", "introduced_in" => "Ruby 3.0"}

description (empty) → Interface introduced in Ruby 3.0 by Samuel Williams. Provides hooks inside the Ruby IO implementation so that, in the...

short_description (empty) → Ruby hook interface letting fibers transparently defer blocking IO.

create Provided Buffers concept

kind (empty) → concept

name (empty) → Provided Buffers

slug (empty) → provided-buffers

attrs (empty) → {"category" => "architecture"}

description (empty) → io_uring mechanism where the application sets up an additional circular buffer (a buffer ring) of preallocated read b...

short_description (empty) → io_uring feature letting the kernel pull read buffers from an application-supplied buffer ring.

create Samuel Williams person

kind (empty) → person

name (empty) → Samuel Williams

slug (empty) → samuel-williams

description (empty) → Ruby core contributor responsible for much of the fiber work in Ruby over the last few years, including the Fiber Sch...

short_description (empty) → Ruby contributor behind modern fiber work, the async gems, and the Falcon web server.

create Falcon tool

kind (empty) → tool

name (empty) → Falcon

slug (empty) → falcon

attrs (empty) → {"category" => "service"}

description (empty) → Ruby web server authored by Samuel Williams on top of his async gem family. Referenced at wroclove.rb 2026 in Sharon ...

short_description (empty) → Fiber-based Ruby web server built on the async ecosystem.

update EventMachine tool

attrs {"category" => "library"} → {"status" => "unmaintained", "category" => "library"}

description Classic Ruby event-driven networking library. David Halasz considered it for the remote-console proxy but discarded i... → Classic Ruby event-driven networking/reactor library, popular in Ruby's early days when the community was looking to ...

create Polyphony project

kind (empty) → project

name (empty) → Polyphony

slug (empty) → polyphony

attrs (empty) → {"status" => "superseded", "license" => "open-source"}

description (empty) → Earlier Ruby concurrency gem authored by Sharon Rosner that attempted to bring io_uring to Ruby. Very high-level with...

short_description (empty) → Sharon Rosner's earlier high-level Ruby fiber+io_uring concurrency gem.

create Syntropy project

kind (empty) → project

name (empty) → Syntropy

slug (empty) → syntropy

attrs (empty) → {"status" => "active", "license" => "open-source"}

description (empty) → Sharon Rosner's own Ruby web framework for personal use (transcribed 'Cynthropy'/'Cropy'). Runs on top of a custom-ma...

short_description (empty) → Sharon Rosner's personal Ruby web framework.

create The Mythical IO-Bound Rails App resource

kind (empty) → resource

name (empty) → The Mythical IO-Bound Rails App

slug (empty) → the-mythical-io-bound-rails-app

attrs (empty) → {"type" => "article"}

description (empty) → Article by Jean Boussier that Sharon Rosner recommends to the audience. Argues in detail that mature Rails applicatio...

short_description (empty) → Jean Boussier article arguing real Rails apps are CPU-heavy, not IO-bound.

create Jean Boussier person

kind (empty) → person

name (empty) → Jean Boussier

slug (empty) → jean-boussier

description (empty) → Ruby performance engineer, author of the 'Mythical IO-Bound Rails App' article arguing that real-world Rails applicat...

short_description (empty) → Ruby performance engineer; author of 'The Mythical IO-Bound Rails App'.

create Multi-shot Accept Backlog Concern question

kind (empty) → question

name (empty) → Multi-shot Accept Backlog Concern

slug (empty) → multi-shot-accept-backlog-concern

attrs (empty) → {"answer_summary" => "Sharon suggested listen() backlog but admitted it needs to be investigated."}

description (empty) → Audience member asked whether multi-shot accept on a listening socket risks committing to too many in-flight TCP conn...

short_description (empty) → Does multi-shot accept risk accepting too many in-flight TCP connections?

create Do You Use Falcon With Your Framework? question

kind (empty) → question

name (empty) → Do You Use Falcon With Your Framework?

slug (empty) → do-you-use-falcon-with-your-framework

attrs (empty) → {"answer_summary" => "No — Syntropy runs on Sharon's own custom Rack web server, not Falcon."}

description (empty) → Audience asked whether Sharon uses Falcon everywhere with his framework and other projects. Sharon answered no — Synt...

short_description (empty) → Does Sharon use Falcon as the web server for his framework?

create Business Motivation for UringMachine question

kind (empty) → question

name (empty) → Business Motivation for UringMachine

slug (empty) → business-motivation-for-uringmachine

attrs (empty) → {"answer_summary" => "Long-running EventMachine-based industrial process-control apps needed a maintained replacement...

description (empty) → Audience asked what original business needs pushed Sharon to build UringMachine and what example would tell someone t...

short_description (empty) → What business need drove building UringMachine?

create io_uring Beats Threads More as Concurrency Grows takeaway

kind (empty) → takeaway

name (empty) → io_uring Beats Threads More as Concurrency Grows

slug (empty) → io_uring-beats-threads-more-as-concurrency-grows

attrs (empty) → {"type" => "insight"}

description (empty) → In a synthetic benchmark of 50 Unix pipes with paired reader/writer fibers or threads, UringMachine (both fiber-sched...

short_description (empty) → UringMachine's advantage over threads widens as concurrency level increases.

create Real Rails Apps Are Not IO-Bound takeaway

kind (empty) → takeaway

name (empty) → Real Rails Apps Are Not IO-Bound

slug (empty) → real-rails-apps-are-not-io-bound

attrs (empty) → {"type" => "warning"}

description (empty) → Pure fiber/io_uring benchmarks reflect synthetic IO-only scenarios. Real applications — especially mature Rails apps ...

short_description (empty) → Mature Rails apps do heavy CPU work, limiting pure-IO concurrency gains.

create UringMachine as EventMachine Replacement takeaway

kind (empty) → takeaway

name (empty) → UringMachine as EventMachine Replacement

slug (empty) → uringmachine-as-eventmachine-replacement

attrs (empty) → {"type" => "recommendation"}

description (empty) → EventMachine has been unmaintained for years and is a real risk for long-running Ruby applications built on it. Uring...

short_description (empty) → UringMachine exists to replace long-abandoned EventMachine.

create Provided Buffers Enable Automatic Buffer Management takeaway

kind (empty) → takeaway

name (empty) → Provided Buffers Enable Automatic Buffer Management

slug (empty) → provided-buffers-enable-automatic-buffer-management

attrs (empty) → {"type" => "insight"}

description (empty) → Using io_uring provided buffers (with incremental consumption on recent kernels), UringMachine allocates a pool of bu...

short_description (empty) → Share one buffer pool across all reads instead of allocating per-operation buffers.

Edges (57)

update Sharon Rosner → authored → UringMachine — High Performance Concurrency for Ruby Using io_uring

context (empty) → Sharon delivered this talk at wroclove.rb 2026.

update UringMachine — High Performance Concurrency for Ruby Using io_uring → presented_at → wroclove.rb 2026

context (empty) → Talk delivered at wroclove.rb 2026 on 2026-04-17.

create Sharon Rosner → attended → wroclove.rb 2026

context (empty) → Speaker at wroclove.rb 2026.

relation (empty) → attended

source_node_id (empty) → 309b86ce-8d1a-44c2-a8c7-e7320b708358

target_node_id (empty) → c1bfbda9-9fbb-4d7f-8e12-1a7a81621ba9

create Sharon Rosner → works_on → UringMachine

attrs (empty) → {"role" => "author"}

context (empty) → Sharon has been developing UringMachine for about a year.

relation (empty) → works_on

source_node_id (empty) → 309b86ce-8d1a-44c2-a8c7-e7320b708358

target_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

create Sharon Rosner → works_on → Polyphony

attrs (empty) → {"role" => "author"}

context (empty) → Authored Polyphony, his earlier high-level io_uring concurrency gem.

relation (empty) → works_on

source_node_id (empty) → 309b86ce-8d1a-44c2-a8c7-e7320b708358

target_node_id (empty) → 98108655-6020-4553-806f-d3eb68235028

create Sharon Rosner → works_on → Syntropy

attrs (empty) → {"role" => "author"}

context (empty) → Syntropy is Sharon's personal Ruby web framework running on his own custom Rack server.

relation (empty) → works_on

source_node_id (empty) → 309b86ce-8d1a-44c2-a8c7-e7320b708358

target_node_id (empty) → 5b625079-a73a-4972-a788-0bad385b8f39

create UringMachine → uses → io_uring

context (empty) → UringMachine is built on Linux io_uring.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → 7cde01e9-d570-4845-b195-ea91f7cfc50b

create UringMachine → uses → Fiber

context (empty) → UringMachine drives concurrency using Ruby fibers.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → 860795aa-c3c8-4d76-8965-67ebbad2f2b8

create UringMachine → uses → Run Queue

context (empty) → A UringMachine instance is an io_uring instance plus a run queue for fibers.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → ac6e5d4b-1d49-4147-9501-29f007214326

create UringMachine → uses → Provided Buffers

context (empty) → UringMachine builds automatic buffer management on io_uring provided buffers.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → ecc16767-cf48-470b-a339-07d1ba9f523e

create UringMachine → uses → Multi-shot Operations

context (empty) → UringMachine exposes multi-shot accept/timeout/read/receive as iterator-style APIs.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → c9552225-8634-4ae9-83b2-8539feeaca02

create UringMachine → uses → Fiber Scheduler

context (empty) → UringMachine includes a Ruby Fiber Scheduler implementation for ecosystem compatibility.

relation (empty) → uses

source_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

target_node_id (empty) → 033ec84f-689b-4b77-a25a-af0ac6cb3254

create Syntropy → uses → UringMachine

context (empty) → Syntropy runs on a custom Rack server on top of UringMachine.

relation (empty) → uses

source_node_id (empty) → 5b625079-a73a-4972-a788-0bad385b8f39

target_node_id (empty) → abf47973-bbfa-4870-aa75-88606dad00f6

create UringMachine — High Performance Concurrency for Ruby Using io_uring → about → UringMachine

context (empty) → The talk introduces and explains UringMachine.

relation (empty) → about