RSS Parrot

Finding hot allocation sites with bpftrace

https://www.mgaudet.ca/technical/2025/5/28/finding-hot-allocation-sites-with-bpftrace

Published: May 28, 2025 20:58

So, last time I said I was hooked, and that I wrote an allocation profiler. That’s true! And it was comparatively easy. Starting from the baseline of SpiderMonkey which sleeps before exit from the last blog post, the profiler looks like this: BEGIN { …

Exploring a language runtime with bpftrace

https://www.mgaudet.ca/technical/2025/5/28/exploring-a-language-runtime-with-bpftrace

Published: May 28, 2025 16:42

So I have been having quite a bit of fun learning about eBPF. It’s been on my todo list for like two or three years, but I’ve finally made the time to actually start to figure it out, and have already found some neat stuff, and had to do some fun hacking. …

A Performance Investigation Challenge

https://www.mgaudet.ca/technical/2025/5/9/a-performance-investigation-challenge

Published: May 9, 2025 20:24

I really liked matklad’s Performance Visualization challenge (partially because it didn’t take me long to find the line with samply, which made me feel good). Here’s a skills gap or research question perhaps: How do you identify an impactful but diffuse…

Learning about C++ Direction Setting

https://www.mgaudet.ca/technical/2025/5/9/learning-about-c-direction-setting

Published: May 9, 2025 16:03

Another blog post written wearing only my hat, rather than any Mozilla or TC39 Delegate related hats Last year while considering some JavaScript standards evolution, I wanted to look into how C++ handles some of the challenges. I dug through some…

Upgrade issue with jujutsu

https://www.mgaudet.ca/technical/2025/4/17/upgrade-issue-with-jujutsu

Published: April 17, 2025 20:46

Trying to update jujutsu I had a heck of a time. A previously working command stopped working. Running in a different directory, updating rust neither worked. The issue is this commit in the jujutsu repo. The symptom is: …

32 Bit Build of SpiderMonkey -- First in a while

https://www.mgaudet.ca/technical/2025/4/14/32-bit-build-of-spidermonkey-first-in-a-while

Published: April 14, 2025 21:03

Some quick notes on doing a recent 32 bit build of SpiderMonkey Mozconfig: ac_add_options --target=i686-pc-linux ac_add_options --enable-application=js ac_add_options --disable-optimize ac_add_options --enable-debug…

User Defined Primitives: A Sketch

https://www.mgaudet.ca/technical/2025/2/24/user-defined-primitives-a-sketch

Published: February 24, 2025 16:39

The following is written in my Personal capacity, and does not represent the views of the SpiderMonkey team, Mozilla, TC39 or any other broader group than just what’s between my ears. I wear no hats here. I want to propose a little thought experiment for…

Making Teleporting Smarter

https://www.mgaudet.ca/technical/2025/2/20/making-teleporting-smarter

Published: February 20, 2025 23:08

(This is a republish of an article posted at SpiderMonkey.dev for my own archiving purposes) Recently I got to land a patch which touches a cool optimization, that I had to really grok. As a result, I wrote a huge commit…

5 Years of Compiler Jobs

https://www.mgaudet.ca/technical/2024/12/19/5-years-of-compiler-jobs

Published: December 19, 2024 16:37

Turns out I missed the 5 year anniversary of my CompilerJobs page by a little more than a week. From the initial commit, myself and many helpful contributors have Made 308 Commits Listed 196(!!) companies; not including companies who have come and gone…

Dump the commit contents into the editor when editing a Jujutsu commit

https://www.mgaudet.ca/technical/2024/11/12/dump-the-commit-contents-into-the-editor-when-editing-a-jujutsu-commit

Published: November 12, 2024 22:22

I’m so happy with this config that I need to share it even though I’ve only been using this for a few hours. Put this in ~/.config/jj/config.toml. [templates] draft_commit_description = ''' concat( description, surround( …

A Case for Feminism in Programming Lanugage Design

https://www.mgaudet.ca/technical/2024/10/29/a-case-for-feminism-in-programming-lanugage-design

Published: October 30, 2024 03:00

I wish I had read this paper by Felienne Hermans and Ari Schlesinger before going to SPLASH. Felienne’s blog post is worth reading as an introduction, and here’s the stream of her presentation, which I highly recomend -- she's an excellent compelling…

SPLASH 2024: Impressions and Feelings

https://www.mgaudet.ca/technical/2024/10/28/splash-2024-impressions-and-feelings

Published: October 28, 2024 16:25

I thought it would be useful to sit down and write up some of my thoughts on SPLASH 2024 while they are still fresh. Due to happy nuptials (& a pressing desire to get home), I was only able to attend Splash for 2.5 days; Wednesday, Thursday and Friday…