Deno 2.8 ships this week. Our biggest minor release ever.
Node.js compatibility: 42% → 75%+ this year. 500+ Node compat commits since 2.7.
TypeScript 6.0.3, `import defer` support, several new subcommands, catalog workspaces, CPU flamegraphs, and many more.
Node.js compatibility: 42% → 75%+ this year. 500+ Node compat commits since 2.7.
TypeScript 6.0.3, `import defer` support, several new subcommands, catalog workspaces, CPU flamegraphs, and many more.
May 19, 2026 at 2:07 AM
Deno 2.8 ships this week. Our biggest minor release ever.
Node.js compatibility: 42% → 75%+ this year. 500+ Node compat commits since 2.7.
TypeScript 6.0.3, `import defer` support, several new subcommands, catalog workspaces, CPU flamegraphs, and many more.
Node.js compatibility: 42% → 75%+ this year. 500+ Node compat commits since 2.7.
TypeScript 6.0.3, `import defer` support, several new subcommands, catalog workspaces, CPU flamegraphs, and many more.
New post: Adding Loop and Row Counters to SQL Plan Execution FlameGraphs
tanelpoder.com/posts/sql-pl...
tanelpoder.com/posts/sql-pl...
January 4, 2025 at 12:04 PM
New post: Adding Loop and Row Counters to SQL Plan Execution FlameGraphs
tanelpoder.com/posts/sql-pl...
tanelpoder.com/posts/sql-pl...
i would like to enable flamegraphs in my bsky app please
November 14, 2024 at 1:47 AM
i would like to enable flamegraphs in my bsky app please
Inspecting flamegraphs is a pain - dealing with SVG files, opening a browser… ugh.
Not anymore!
🔎 flamelens — An interactive flamegraph viewer for the terminal.
🦀 Written in Rust & built with @ratatui.rs
⭐ GitHub: github.com/YS-L/flamelens
#rustlang #ratatui #tui #flamegraph #profiling
Not anymore!
🔎 flamelens — An interactive flamegraph viewer for the terminal.
🦀 Written in Rust & built with @ratatui.rs
⭐ GitHub: github.com/YS-L/flamelens
#rustlang #ratatui #tui #flamegraph #profiling
February 17, 2025 at 9:39 AM
Inspecting flamegraphs is a pain - dealing with SVG files, opening a browser… ugh.
Not anymore!
🔎 flamelens — An interactive flamegraph viewer for the terminal.
🦀 Written in Rust & built with @ratatui.rs
⭐ GitHub: github.com/YS-L/flamelens
#rustlang #ratatui #tui #flamegraph #profiling
Not anymore!
🔎 flamelens — An interactive flamegraph viewer for the terminal.
🦀 Written in Rust & built with @ratatui.rs
⭐ GitHub: github.com/YS-L/flamelens
#rustlang #ratatui #tui #flamegraph #profiling
It is truly wonderful that Instruments now has flamegraphs. For years, you had to use a collection of scripts and hacks.
June 16, 2025 at 7:44 AM
It is truly wonderful that Instruments now has flamegraphs. For years, you had to use a collection of scripts and hacks.
I want flamegraphs for my microbenchmarks. Spent the day fighting with Criterion and flamegraph-rs. It's working, but the bulk of the flame graph is showing test harness stuff.
What's the best way to get flamegraphs for the only the actual microbenchmark executions?
#rust #rustlang
What's the best way to get flamegraphs for the only the actual microbenchmark executions?
#rust #rustlang
December 13, 2024 at 12:54 AM
This is cool. A #golang playground with flamegraphs built in playground.flamegraph.com/playground
Pyroscope Slack Bot
Upload, analyze, and share performance profiles online
playground.flamegraph.com
November 12, 2024 at 2:13 PM
This is cool. A #golang playground with flamegraphs built in playground.flamegraph.com/playground
my actual models were dogshit but staring at flamegraphs and trying to make everything run faster was a lot of fun
August 13, 2026 at 9:33 AM
my actual models were dogshit but staring at flamegraphs and trying to make everything run faster was a lot of fun
it surprises me every time how the brain adapts. a few days ago i was feeling completely lost in these Android traces and flamegraphs. now i’m pretty comfortable. i remember the shape of some of them, they’re like places i visited. i can spot when a pattern’s different, have plans on what to do next
November 22, 2024 at 1:52 AM
it surprises me every time how the brain adapts. a few days ago i was feeling completely lost in these Android traces and flamegraphs. now i’m pretty comfortable. i remember the shape of some of them, they’re like places i visited. i can spot when a pattern’s different, have plans on what to do next
I still really really want a const, lifetime-erased type_id... I'm thinking of doing another attempt in facet — we need to be able to match on type id in const etc., it's just too important. `Shape::eq` should not show up in flamegraphs
May 2, 2025 at 7:24 PM
I still really really want a const, lifetime-erased type_id... I'm thinking of doing another attempt in facet — we need to be able to match on type id in const etc., it's just too important. `Shape::eq` should not show up in flamegraphs
Samply can now generate flamegraphs on Windows! Anybody got any good resources on reading and using flamegraphs?
February 8, 2025 at 4:29 PM
Samply can now generate flamegraphs on Windows! Anybody got any good resources on reading and using flamegraphs?
heh well I expect the replacements to have their own flamegraphs
April 28, 2026 at 9:34 PM
heh well I expect the replacements to have their own flamegraphs
As a general rule, if you release a free profiling tool for Node.js, I _will_ open a bunch of feature requests 😅.
github.com/platformatic...
cc @nodeland.dev @stephenbelanger.com
github.com/platformatic...
cc @nodeland.dev @stephenbelanger.com
platformatic/flame
Utility to generate flamegraphs. Contribute to platformatic/flame development by creating an account on GitHub.
github.com
September 5, 2025 at 1:57 AM
As a general rule, if you release a free profiling tool for Node.js, I _will_ open a bunch of feature requests 😅.
github.com/platformatic...
cc @nodeland.dev @stephenbelanger.com
github.com/platformatic...
cc @nodeland.dev @stephenbelanger.com
Brendan Gregg gave us flamegraphs! Like prometheus giving man flame, we can now measure this!
Alas, vibes are realm of man, measurements the tools of gods.
Alas, vibes are realm of man, measurements the tools of gods.
February 7, 2025 at 4:54 PM
Brendan Gregg gave us flamegraphs! Like prometheus giving man flame, we can now measure this!
Alas, vibes are realm of man, measurements the tools of gods.
Alas, vibes are realm of man, measurements the tools of gods.
Pyinstrument v5.0 - flamegraphs for Python!
https://www.reddit.com/r/Python/comments/1g1az6i/pyinstrument_v50_flamegraphs_for_python/
https://www.reddit.com/r/Python/comments/1g1az6i/pyinstrument_v50_flamegraphs_for_python/
October 18, 2024 at 12:15 PM
Pyinstrument v5.0 - flamegraphs for Python!
https://www.reddit.com/r/Python/comments/1g1az6i/pyinstrument_v50_flamegraphs_for_python/
https://www.reddit.com/r/Python/comments/1g1az6i/pyinstrument_v50_flamegraphs_for_python/
Controle de fluxo por excessão é o ralo que deixa a performance vazar.
Meus flamegraphs denunciam eles na hora.
Meus flamegraphs denunciam eles na hora.
October 30, 2025 at 6:49 PM
Controle de fluxo por excessão é o ralo que deixa a performance vazar.
Meus flamegraphs denunciam eles na hora.
Meus flamegraphs denunciam eles na hora.
Last month on writethat.blog ...
* SQL Plan Execution FlameGraphs with Loop and Row Counts by @tanelpoder.com
* An Explosion of Rransitive Dependencies by @eatonphil.bsky.social
- Comparing 13 Rust Crates for Extracting Text from HTML by @emschwartz.me
* SQL Plan Execution FlameGraphs with Loop and Row Counts by @tanelpoder.com
* An Explosion of Rransitive Dependencies by @eatonphil.bsky.social
- Comparing 13 Rust Crates for Extracting Text from HTML by @emschwartz.me
February 4, 2025 at 1:54 PM
Last month on writethat.blog ...
* SQL Plan Execution FlameGraphs with Loop and Row Counts by @tanelpoder.com
* An Explosion of Rransitive Dependencies by @eatonphil.bsky.social
- Comparing 13 Rust Crates for Extracting Text from HTML by @emschwartz.me
* SQL Plan Execution FlameGraphs with Loop and Row Counts by @tanelpoder.com
* An Explosion of Rransitive Dependencies by @eatonphil.bsky.social
- Comparing 13 Rust Crates for Extracting Text from HTML by @emschwartz.me
Will be speaking at Brighton Ruby tomorrow!
Join me as I teach you about flamegraphs and how GitHub does performance work!
brightonruby.com
#brightonruby #brightonruby2026
Join me as I teach you about flamegraphs and how GitHub does performance work!
brightonruby.com
#brightonruby #brightonruby2026
Brighton Ruby Conference
brightonruby.com
June 24, 2026 at 12:59 PM
Will be speaking at Brighton Ruby tomorrow!
Join me as I teach you about flamegraphs and how GitHub does performance work!
brightonruby.com
#brightonruby #brightonruby2026
Join me as I teach you about flamegraphs and how GitHub does performance work!
brightonruby.com
#brightonruby #brightonruby2026
How we made a Ruby method 200x faster · Campsite
Hat tip to profiling and flamegraphs
www.campsite.com
December 9, 2024 at 12:16 AM
Enhancing Go performance: Profiling applications with flamegraphs
#golang
blog.alexoglou.com/posts/profi...
#golang
blog.alexoglou.com/posts/profi...
December 11, 2024 at 3:04 AM
Enhancing Go performance: Profiling applications with flamegraphs
#golang
blog.alexoglou.com/posts/profi...
#golang
blog.alexoglou.com/posts/profi...
flamelens - Flamegraph viewer in the terminal
Nice, no need for a browser, viewing flamegraphs within an SSH/terminal session.
Nice, no need for a browser, viewing flamegraphs within an SSH/terminal session.
GitHub - YS-L/flamelens: Flamegraph viewer in the terminal
Flamegraph viewer in the terminal. Contribute to YS-L/flamelens development by creating an account on GitHub.
github.com
April 13, 2025 at 12:56 PM
flamelens - Flamegraph viewer in the terminal
Nice, no need for a browser, viewing flamegraphs within an SSH/terminal session.
Nice, no need for a browser, viewing flamegraphs within an SSH/terminal session.
There’s something with redheads and flamegraphs, I’m just not there yet.
May 1, 2024 at 1:30 AM
There’s something with redheads and flamegraphs, I’m just not there yet.
Deno v2.7.6 is out with 78 changes - 7 features, 12 perf improvements, and 59 fixes
github.com/denoland/den...
- deno eval now auto-detects CJS vs ESM
- --cpu-prof-flamegraph generates interactive SVG flamegraphs
- 28+ Node.js compat fixes (child_process, crypto, tty, worker_threads)
- and more
github.com/denoland/den...
- deno eval now auto-detects CJS vs ESM
- --cpu-prof-flamegraph generates interactive SVG flamegraphs
- 28+ Node.js compat fixes (child_process, crypto, tty, worker_threads)
- and more
Release v2.7.6 · denoland/deno
2.7.6 / 2026.03.18
feat(core): add cloneable resource registry for structured clone (#32672)
feat(core): update v8 to 146.8.0 with foreground task ownership (#32771)
feat(eval): auto-detect CJS vs...
github.com
March 18, 2026 at 12:29 PM
Deno v2.7.6 is out with 78 changes - 7 features, 12 perf improvements, and 59 fixes
github.com/denoland/den...
- deno eval now auto-detects CJS vs ESM
- --cpu-prof-flamegraph generates interactive SVG flamegraphs
- 28+ Node.js compat fixes (child_process, crypto, tty, worker_threads)
- and more
github.com/denoland/den...
- deno eval now auto-detects CJS vs ESM
- --cpu-prof-flamegraph generates interactive SVG flamegraphs
- 28+ Node.js compat fixes (child_process, crypto, tty, worker_threads)
- and more
damn if only there was a bad bitch around with a particular special interest who could tell me how to read flamegraphs
August 6, 2023 at 5:22 PM
damn if only there was a bad bitch around with a particular special interest who could tell me how to read flamegraphs
Easily became my favourite profiler over this time.
There is a lot of good stuff in there beyond traditional flamegraphs, but one of the first things that got me hooked in is "microarchitecture usage" stats - easy way to find functions that would benefit most from SIMD and the like.
There is a lot of good stuff in there beyond traditional flamegraphs, but one of the first things that got me hooked in is "microarchitecture usage" stats - easy way to find functions that would benefit most from SIMD and the like.
October 31, 2025 at 6:14 PM
Easily became my favourite profiler over this time.
There is a lot of good stuff in there beyond traditional flamegraphs, but one of the first things that got me hooked in is "microarchitecture usage" stats - easy way to find functions that would benefit most from SIMD and the like.
There is a lot of good stuff in there beyond traditional flamegraphs, but one of the first things that got me hooked in is "microarchitecture usage" stats - easy way to find functions that would benefit most from SIMD and the like.