@pgaultier.bsky.social
The production bug that made me care about undefined behavior. New blog article fresh out of the oven.
gaultier.github.io/blog/the_pro...
#cpp #bug
gaultier.github.io/blog/the_pro...
#cpp #bug
The production bug that made me care about undefined behavior
gaultier.github.io
December 27, 2025 at 6:28 PM
The production bug that made me care about undefined behavior. New blog article fresh out of the oven.
gaultier.github.io/blog/the_pro...
#cpp #bug
gaultier.github.io/blog/the_pro...
#cpp #bug
New blog article!
Detecting goroutine leaks with DTrace: gaultier.github.io/blog/detecti...
#golang #dtrace
Detecting goroutine leaks with DTrace: gaultier.github.io/blog/detecti...
#golang #dtrace
Detecting goroutine leaks with DTrace
gaultier.github.io
December 22, 2025 at 6:38 PM
New blog article!
Detecting goroutine leaks with DTrace: gaultier.github.io/blog/detecti...
#golang #dtrace
Detecting goroutine leaks with DTrace: gaultier.github.io/blog/detecti...
#golang #dtrace
Rant: if you are designing a programming language from the ground up and the only solution you have for data races is “use the runtime race detector”, then you have not spent enough time in the trenches suffering from data corruption and rare, incoherent errors due to data races.
December 16, 2025 at 10:26 AM
Rant: if you are designing a programming language from the ground up and the only solution you have for data races is “use the runtime race detector”, then you have not spent enough time in the trenches suffering from data corruption and rare, incoherent errors due to data races.
Reposted
New post: a defense of lock poisoning in Rust.
Followup to recent discussion: decided to write about lock poisoning, looking at the arguments on each side, and informed by our experience at @oxide.computer dealing with the parallel problem of unexpected async cancellations
Please give it a read!
Followup to recent discussion: decided to write about lock poisoning, looking at the arguments on each side, and informed by our experience at @oxide.computer dealing with the parallel problem of unexpected async cancellations
Please give it a read!
In defense of lock poisoning in Rust · sunshowers
It's worth retaining one of multithreaded Rust's most valuable features.
sunshowers.io
December 2, 2025 at 7:37 PM
New post: a defense of lock poisoning in Rust.
Followup to recent discussion: decided to write about lock poisoning, looking at the arguments on each side, and informed by our experience at @oxide.computer dealing with the parallel problem of unexpected async cancellations
Please give it a read!
Followup to recent discussion: decided to write about lock poisoning, looking at the arguments on each side, and informed by our experience at @oxide.computer dealing with the parallel problem of unexpected async cancellations
Please give it a read!
A million ways to die from a data race in Go. New blog post. Well it’s not quite a million, but still.
gaultier.github.io/blog/a_milli...
#golang
gaultier.github.io/blog/a_milli...
#golang
A million ways to die from a data race in Go
gaultier.github.io
November 21, 2025 at 7:13 PM
A million ways to die from a data race in Go. New blog post. Well it’s not quite a million, but still.
gaultier.github.io/blog/a_milli...
#golang
gaultier.github.io/blog/a_milli...
#golang
After many years of writing Go professionally and tracking very varied data races, I am slowly becoming convinced that if you care about data races, you should not use goroutines. At all.
#golang
#golang
November 20, 2025 at 3:45 PM
After many years of writing Go professionally and tracking very varied data races, I am slowly becoming convinced that if you care about data races, you should not use goroutines. At all.
#golang
#golang
“Hell is other people”.
Sartres clearly did not have to support 4 different SQL databases in the same codebase at scale.
Lucky bastard.
Sartres clearly did not have to support 4 different SQL databases in the same codebase at scale.
Lucky bastard.
October 16, 2025 at 4:11 PM
“Hell is other people”.
Sartres clearly did not have to support 4 different SQL databases in the same codebase at scale.
Lucky bastard.
Sartres clearly did not have to support 4 different SQL databases in the same codebase at scale.
Lucky bastard.
And another blog article, once again about Go and DTrace:
gaultier.github.io/blog/go_dtra...
#dtrace #golang
gaultier.github.io/blog/go_dtra...
#dtrace #golang
See all network traffic in a Go program, even when encrypted and compressed
gaultier.github.io
September 26, 2025 at 9:29 AM
And another blog article, once again about Go and DTrace:
gaultier.github.io/blog/go_dtra...
#dtrace #golang
gaultier.github.io/blog/go_dtra...
#dtrace #golang
I just wrote another Go + DTrace blog article!
This time: Are my SQL files read at build time or run time?
gaultier.github.io/blog/are_my_...
#golang #dtrace
This time: Are my SQL files read at build time or run time?
gaultier.github.io/blog/are_my_...
#golang #dtrace
Are my SQL files read at build time or run time?
gaultier.github.io
September 17, 2025 at 10:24 AM
I just wrote another Go + DTrace blog article!
This time: Are my SQL files read at build time or run time?
gaultier.github.io/blog/are_my_...
#golang #dtrace
This time: Are my SQL files read at build time or run time?
gaultier.github.io/blog/are_my_...
#golang #dtrace
Go, SQL, and DTrace: a marriage made in heaven?
New blog post!
gaultier.github.io/blog/observe...
#golang #dtrace #sql
New blog post!
gaultier.github.io/blog/observe...
#golang #dtrace #sql
Observe live SQL queries in Go with DTrace
gaultier.github.io
September 11, 2025 at 11:53 AM
Go, SQL, and DTrace: a marriage made in heaven?
New blog post!
gaultier.github.io/blog/observe...
#golang #dtrace #sql
New blog post!
gaultier.github.io/blog/observe...
#golang #dtrace #sql
The good thing about spending your Friday afternoon pulling your hair troubleshooting a bug, is that it makes for a nice blog article afterwards…
gaultier.github.io/blog/subtle_...
#bug #golang
gaultier.github.io/blog/subtle_...
#bug #golang
A subtle bug with Go's errgroup
gaultier.github.io
August 9, 2025 at 9:30 AM
The good thing about spending your Friday afternoon pulling your hair troubleshooting a bug, is that it makes for a nice blog article afterwards…
gaultier.github.io/blog/subtle_...
#bug #golang
gaultier.github.io/blog/subtle_...
#bug #golang
Reposted
I joined the Go team just after exploiting a carry bug in a Go assembly core, and I've been looking for ways to prevent the next one ever since.
This year's attempt is very promising: mutation testing swapping e.g. ADC → ADD, CMOV → MOV, etc. to provide test coverage for constant time assembly.
This year's attempt is very promising: mutation testing swapping e.g. ADC → ADD, CMOV → MOV, etc. to provide test coverage for constant time assembly.
Go Assembly Mutation Testing
Test coverage of delicate Go cryptographic assembly through a new mutation testing framework.
words.filippo.io
July 31, 2025 at 5:10 PM
I joined the Go team just after exploiting a carry bug in a Go assembly core, and I've been looking for ways to prevent the next one ever since.
This year's attempt is very promising: mutation testing swapping e.g. ADC → ADD, CMOV → MOV, etc. to provide test coverage for constant time assembly.
This year's attempt is very promising: mutation testing swapping e.g. ADC → ADD, CMOV → MOV, etc. to provide test coverage for constant time assembly.
Me: wow, my new work got me the new M4 MacBook Pro with 48 GB of RAM, every build is going to be instant!
npm run build: Worker terminated due to reaching memory limit: JS heap out of memory.
Tim Apple giveth, JavaScript taketh away
npm run build: Worker terminated due to reaching memory limit: JS heap out of memory.
Tim Apple giveth, JavaScript taketh away
July 31, 2025 at 1:20 PM
Me: wow, my new work got me the new M4 MacBook Pro with 48 GB of RAM, every build is going to be instant!
npm run build: Worker terminated due to reaching memory limit: JS heap out of memory.
Tim Apple giveth, JavaScript taketh away
npm run build: Worker terminated due to reaching memory limit: JS heap out of memory.
Tim Apple giveth, JavaScript taketh away
Reposted
i hope to become the #1 RSS influencer
November 10, 2024 at 7:27 PM
i hope to become the #1 RSS influencer
Reposted
Modern webdev is so much. I'm installing so many packages and gems and I'm completely unsure of what is doing how and where.
One day I'll have to get used to this stuff. It's very different from Systems Engineering.
One day I'll have to get used to this stuff. It's very different from Systems Engineering.
July 28, 2025 at 5:31 PM
Modern webdev is so much. I'm installing so many packages and gems and I'm completely unsure of what is doing how and where.
One day I'll have to get used to this stuff. It's very different from Systems Engineering.
One day I'll have to get used to this stuff. It's very different from Systems Engineering.
Today I wanted to dtrace a nodejs application at work but then I discovered that nodejs removed dtrace support some time ago (static probes). Bummer.
Still can do a lot just dtrace-ing system calls… but still, unfortunate.
Reminds me of the talk “platform as a reflection of values…
Still can do a lot just dtrace-ing system calls… but still, unfortunate.
Reminds me of the talk “platform as a reflection of values…
July 25, 2025 at 5:04 PM
Today I wanted to dtrace a nodejs application at work but then I discovered that nodejs removed dtrace support some time ago (static probes). Bummer.
Still can do a lot just dtrace-ing system calls… but still, unfortunate.
Reminds me of the talk “platform as a reflection of values…
Still can do a lot just dtrace-ing system calls… but still, unfortunate.
Reminds me of the talk “platform as a reflection of values…
Reposted
... Well. I got a paper number, despite thinking I'd just hold onto it. No wording but I think it's about as complete as it can be.
thephd.dev/_vendor/futu...
thephd.dev/_vendor/futu...
N3657: Functions with Data - Closures in C (A Comprehensive Proposal Overviewing Blocks, Nested Functions, and Lambdas)
thephd.dev
July 23, 2025 at 10:47 PM
... Well. I got a paper number, despite thinking I'd just hold onto it. No wording but I think it's about as complete as it can be.
thephd.dev/_vendor/futu...
thephd.dev/_vendor/futu...
Me, after 10 years of coercing various crazy C & C++ build systems and mixed language codebases to work everywhere even on old unsupported BSDs: Unlimited power! I can do anything !
Me after 2 weeks of having to work with npm and the JavaScript world: I’m in danger.
Me after 2 weeks of having to work with npm and the JavaScript world: I’m in danger.
July 24, 2025 at 10:27 AM
Me, after 10 years of coercing various crazy C & C++ build systems and mixed language codebases to work everywhere even on old unsupported BSDs: Unlimited power! I can do anything !
Me after 2 weeks of having to work with npm and the JavaScript world: I’m in danger.
Me after 2 weeks of having to work with npm and the JavaScript world: I’m in danger.
Ever wondered if it’s possible to use DTrace on a Go program? Turns out it’s super easy, barely an inconvenience!
gaultier.github.io/blog/an_opti...
#golang #dtrace #optimization #debugging
gaultier.github.io/blog/an_opti...
#golang #dtrace #optimization #debugging
An optimization and debugging story with Go and DTrace
gaultier.github.io
July 3, 2025 at 9:39 AM
Ever wondered if it’s possible to use DTrace on a Go program? Turns out it’s super easy, barely an inconvenience!
gaultier.github.io/blog/an_opti...
#golang #dtrace #optimization #debugging
gaultier.github.io/blog/an_opti...
#golang #dtrace #optimization #debugging
Reposted
Spent the last ~month trying to figure out why compiling my website took so long. Decided to turn it into a blog post :)
sharnoff.io/blog/why-rus...
sharnoff.io/blog/why-rus...
"Why is the Rust compiler so slow?"
sharnoff.io
June 26, 2025 at 8:58 AM
Spent the last ~month trying to figure out why compiling my website took so long. Decided to turn it into a blog post :)
sharnoff.io/blog/why-rus...
sharnoff.io/blog/why-rus...
What should your mutexes be named?
gaultier.github.io/blog/what_sh...
#programming #golang #structural-search #awk
gaultier.github.io/blog/what_sh...
#programming #golang #structural-search #awk
What should your mutexes be named?
gaultier.github.io
June 10, 2025 at 6:30 AM
What should your mutexes be named?
gaultier.github.io/blog/what_sh...
#programming #golang #structural-search #awk
gaultier.github.io/blog/what_sh...
#programming #golang #structural-search #awk