Making my debug build run 100x faster so that it is finally usable
(gaultier.github.io)
SIMD and dedicated silicon to the rescue.
SIMD and dedicated silicon to the rescue.
I helped fix sleep-wake hangs on Linux with AMD GPUs
(gitlab.io)
I dual-boot my desktop between Windows and Linux. Over the past few years, Linux would often crash when I tried to sleep my computer with high RAM usage. Upon waking it would show a black screen with moving cursor, or enter a "vegetative" state with no image on-screen, only responding to magic SysRq or a hard reset. I traced this behavior to an amdgpu driver power/memory management bug, which took over a year to brainstorm and implement solutions for.
I dual-boot my desktop between Windows and Linux. Over the past few years, Linux would often crash when I tried to sleep my computer with high RAM usage. Upon waking it would show a black screen with moving cursor, or enter a "vegetative" state with no image on-screen, only responding to magic SysRq or a hard reset. I traced this behavior to an amdgpu driver power/memory management bug, which took over a year to brainstorm and implement solutions for.
Exposing concurrency bugs with a custom scheduler
(lwn.net)
Jake Hillion gave a presentation at FOSDEM about using sched_ext, the BPF scheduling framework that was introduced in kernel version 6.12, to help find elusive concurrency problems.
Jake Hillion gave a presentation at FOSDEM about using sched_ext, the BPF scheduling framework that was introduced in kernel version 6.12, to help find elusive concurrency problems.
Do You Use a Debugger?
(sandordargo.com)
You might laugh at this question because your answer is of course, who wouldn’t! Especially in the world of C++. Equally, you might laugh at this question, because your answer is obviously no! You write clean code that reads like well-written prose and the behaviour of your code is clearly documented in automated tests.
You might laugh at this question because your answer is of course, who wouldn’t! Especially in the world of C++. Equally, you might laugh at this question, because your answer is obviously no! You write clean code that reads like well-written prose and the behaviour of your code is clearly documented in automated tests.
Show HN: Letting LLMs Run a Debugger
(github.com/mohsen1)
LLM Debugger is a VSCode extension that demonstrates the use of large language models (LLMs) for active debugging of programs.
LLM Debugger is a VSCode extension that demonstrates the use of large language models (LLMs) for active debugging of programs.
Auto-Rewind for Daily Test (Apache NuttX RTOS)
(lupyuen.org)
If the Daily Test fails for Apache NuttX RTOS … Can we Auto-Rewind and discover the Breaking Commit? Let’s try this (pic above)
If the Daily Test fails for Apache NuttX RTOS … Can we Auto-Rewind and discover the Breaking Commit? Let’s try this (pic above)
Funtrace: C++ function call tracer for x86/Linux
(github.com/yosefk)
A function call tracer is a kind of profiler showing a timeline of function call and return events. Here's an example trace captured by funtrace from Krita:
A function call tracer is a kind of profiler showing a timeline of function call and return events. Here's an example trace captured by funtrace from Krita:
Memory profilers, call graphs, exception reports, and telemetry
(nuanced.dev)
To meaningfully solve problems, developers aggregate context from several disparate sources that live both within and outside code. This context is often scattered across a daunting array of tools that developers navigate daily: from the AWS Console's labyrinth of services to Kubernetes' multi-layered configs, Datadog's dense metric displays to distributed traces spanning dozens of services. Each tool demands its own expertise, creating constant context-switching that interrupts flow and drains productivity [1].
To meaningfully solve problems, developers aggregate context from several disparate sources that live both within and outside code. This context is often scattered across a daunting array of tools that developers navigate daily: from the AWS Console's labyrinth of services to Kubernetes' multi-layered configs, Datadog's dense metric displays to distributed traces spanning dozens of services. Each tool demands its own expertise, creating constant context-switching that interrupts flow and drains productivity [1].
Profiling in production with function call traces
(yosefk.com)
A timeline showing function call and return events is a great way to debug performance problems, especially in production. In particular, it's often much more effective than traditional sampling profilers, for reasons we’ll discuss. However, the adoption of function tracing in the industry remains uneven because of a chicken-and-egg problem.
A timeline showing function call and return events is a great way to debug performance problems, especially in production. In particular, it's often much more effective than traditional sampling profilers, for reasons we’ll discuss. However, the adoption of function tracing in the industry remains uneven because of a chicken-and-egg problem.
Httptap: View HTTP/HTTPS requests made by any Linux program
(github.com/monasticacademy)
View the HTTP and HTTPS requests made by any linux program by running httptap -- <command>. For example, the following runs curl on "monasticacademy.org", which results in an HTTP status of 308 (Redirect):
View the HTTP and HTTPS requests made by any linux program by running httptap -- <command>. For example, the following runs curl on "monasticacademy.org", which results in an HTTP status of 308 (Redirect):
How to monitor and debug Terraform (Terragrunt/OpenTofu) using OpenTelemetry
(dash0.com)
This blog post provides a comprehensive guide on monitoring and debugging Terragrunt, Terraform/OpenTofu using OpenTelemetry.
This blog post provides a comprehensive guide on monitoring and debugging Terragrunt, Terraform/OpenTofu using OpenTelemetry.
Ruby Source Parsing
(alchemists.io)
One powerful tool in your debugging arsenal is the ability to quickly obtain an object’s source location and/or the original source code itself.
One powerful tool in your debugging arsenal is the ability to quickly obtain an object’s source location and/or the original source code itself.
Practicing graphical debugging using visualizations of the Hilbert curve
(akkartik.name)
“..you don't understand things, you just get used to them.” — John von Neumann
“..you don't understand things, you just get used to them.” — John von Neumann
List Any Linux Tracepoint with Their Arguments, Datatypes and Related Structs
(tanelpoder.com)
This should be something useful for Linux kernel explorers and eBPF nerds!
This should be something useful for Linux kernel explorers and eBPF nerds!
Show HN: Uscope, a new Linux debugger written from scratch
(github.com/jcalabro)
uscope (pronounced "microscope") is a native code graphical debugger and introspection toolchain for Linux.
uscope (pronounced "microscope") is a native code graphical debugger and introspection toolchain for Linux.
Ask HN: What was the most annoying bug you ever debugged?
(ycombinator.com)
Ask HN: What was the most annoying bug you ever debugged?
Ask HN: What was the most annoying bug you ever debugged?
Beyond file trees: why AI coding assistants need smarter context
(nuanced.dev)
When debugging code, experienced developers don't start by reading every file in the repository. They trace execution paths, follow function calls, and leverage their understanding of the system architecture. Yet many AI coding tools today work like developers who haven't learned these navigation skills—they rely on basic file listings and attempt to cram as much code as possible into their limited context windows.
When debugging code, experienced developers don't start by reading every file in the repository. They trace execution paths, follow function calls, and leverage their understanding of the system architecture. Yet many AI coding tools today work like developers who haven't learned these navigation skills—they rely on basic file listings and attempt to cram as much code as possible into their limited context windows.
Tmux-inspect: debug objects in tmux popups with jless
(github.com/raine)
A Node.js library for inspecting objects during development using tmux popups and jless.
A Node.js library for inspecting objects during development using tmux popups and jless.
When AI promises speed but delivers debugging hell
(nsavage.substack.com)
I am launching a new app today: Codescribble. Codescribble is a basic shared text editor. Two or more people can open the same file and work on it at the same time, like a basic Google Doc. This focuses on quickly getting you and collaborators on the same document quickly.
I am launching a new app today: Codescribble. Codescribble is a basic shared text editor. Two or more people can open the same file and work on it at the same time, like a basic Google Doc. This focuses on quickly getting you and collaborators on the same document quickly.
Ask HN: How to automate collecting HAR file while user is browsing
(ycombinator.com)
We are facing an intermittent issue in our web application where for some users for some reasons http requests are ending in error ( 400s ) esp. during token refresh with authentication server.
We are facing an intermittent issue in our web application where for some users for some reasons http requests are ending in error ( 400s ) esp. during token refresh with authentication server.
How to Inspect React Server Component Activity with Next.js and OpenTelemetry
(dash0.com)
As web developers, we've become accustomed to the incredible power of browser dev tools. Need to understand why a component isn't rendering correctly? Pop open the inspector! Want to trace a network request? The Network tab is your best friend. Debugging, profiling, and understanding frontend code has never been easier. Until now.
As web developers, we've become accustomed to the incredible power of browser dev tools. Need to understand why a component isn't rendering correctly? Pop open the inspector! Want to trace a network request? The Network tab is your best friend. Debugging, profiling, and understanding frontend code has never been easier. Until now.
The Hunt for Error -22
(tweedegolf.nl)
This article is a linear retrospective of how we searched for and eventually fixed a hard-to-find bug in our embedded software. If you're only interested in the outcome, then make sure to read the last three sections.
This article is a linear retrospective of how we searched for and eventually fixed a hard-to-find bug in our embedded software. If you're only interested in the outcome, then make sure to read the last three sections.
System Informer
(systeminformer.com)
A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.
A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.
The Hunt for Error -22
(tweedegolf.nl)
This article is a linear retrospective of how we searched for and eventually fixed a hard-to-find bug in our embedded software. If you're only interested in the outcome, then make sure to read the last three sections.
This article is a linear retrospective of how we searched for and eventually fixed a hard-to-find bug in our embedded software. If you're only interested in the outcome, then make sure to read the last three sections.
Debugging C++ is a UI nightmare
(core-explorer.github.io)
If you are a maintainer or developer of a debugger, don’t be offended, I’m not talking about you or your product.
If you are a maintainer or developer of a debugger, don’t be offended, I’m not talking about you or your product.
Creating wrappers for Windows exe files using Homebrew and Wine
(flaky.build)
I recently noticed that my 2013 Ford Transit mk7 van doesn’t have great observability to debug what went wrong and it just shows ENGINE MALFUNCTION text in the small screen instead of actually providing helpful error messages.
I recently noticed that my 2013 Ford Transit mk7 van doesn’t have great observability to debug what went wrong and it just shows ENGINE MALFUNCTION text in the small screen instead of actually providing helpful error messages.
Psss: Process Star Alignment
(brendangregg.com)
Process star signs can be identified by the psss program found here. example output:
Process star signs can be identified by the psss program found here. example output:
Show HN: Enable Claude to interactively debug your code
(github.com/jasonjmcghee)
This is an MCP Server and VS Code extension which enables claude to interactively debug and evaluate expressions.
This is an MCP Server and VS Code extension which enables claude to interactively debug and evaluate expressions.