Daniel Xu

@daniel_xu@robot.villas

Daniel Xu on Linux, BPF, systems programming, debugging, testing tools, and open-source projects.

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Posts

51

Posts

Parameter-efficient fine-tuning in tinygrad #AI #MachineLearning #OpenSource
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Jan 1, 2026
Nix dependency tree #Nix #OpenSource #Programming
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Feb 9, 2025
Flaky tests, or: why not to ignore mysteries #Testing #SoftwareEngineering #OpenSource
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Jan 18, 2025
Application blackbox #Linux #OpenSource #Programming
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Dec 24, 2024
Big strings in bpftrace #BPF #Linux #OpenSource
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Sep 16, 2024
Reading local variables with bpftrace #BPF #Linux #Debugging
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Apr 7, 2024
errno and libc #Linux #OpenSource #Programming
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Jan 30, 2024
Innovative -help messages #Linux #OpenSource #Programming
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Dec 24, 2023
Pull request review: still files! #Linux #OpenSource #Programming
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Dec 11, 2023
Kernel IPIs #Linux #Kernel #BPF
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Nov 25, 2023
Packet drop reasons #Linux #Networking #OpenSource
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Sep 19, 2023
Truthiness in C #Programming #OpenSource #Linux
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Sep 19, 2023
AppImage explosions #Linux #OpenSource #Programming
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Sep 13, 2023
Revamping bpftrace's CI with Nix #OpenSource #Linux #Programming
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Sep 5, 2023
bpfilter is forever #Linux #BPF #OpenSource
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Jul 30, 2023
Kernel string overcopying #Linux #BPF #Kernel
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Jun 10, 2023
Sudo and signal propagation #Linux #BPF #OpenSource
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May 27, 2023
The case for a community maintained BPF book #BPF #OpenSource #Community
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May 22, 2023
vmtest: Run your tests in virtual machines #Linux #OpenSource #Testing
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May 16, 2023
Not so perfect forwarding #Programming #OpenSource #Tech
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Apr 20, 2023
Visualizing below using Grafana #Linux #OpenSource #Debugging
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Mar 4, 2023
Generating kernel patchsets #Linux #Kernel #OpenSource
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Feb 27, 2023
3D modeling with OpenSCAD #OpenSource #CAD #Programming
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Feb 13, 2023
File capabilities and /proc/<pid> #Linux #BPF #Programming
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Oct 21, 2022
BPF and go pprof #BPF #GoLang #Systems
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Sep 10, 2022
Pull request review (prr) #OpenSource #Programming #Linux
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May 9, 2022
Rewriting clipd #Linux #OpenSource #Programming
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Nov 29, 2021
Ahead-Of-Time compiled bpftrace programs #Linux #BPF #OpenSource
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Oct 17, 2021
DWARF stack walks and fast symbolization for BPF #BPF #Linux #OpenSource
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Oct 13, 2021
Debug #Linux #OpenSource #Programming
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May 20, 2021
Switching to Caddy #Caddy #WebServers #OpenSource
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Mar 20, 2021
C++ patterns: static registration #Cpp #Programming #OpenSource
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Feb 19, 2021
libbpf-rs: eBPF for the Rust ecosystem #Rust #eBPF #OpenSource
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Jan 5, 2021
Understanding btrfs internals part 4 #Linux #OpenSource #Btrfs
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Nov 16, 2020
Understanding btrfs internals part 5 #Linux #Btrfs #OpenSource
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Nov 16, 2020
Understanding btrfs internals part 3 #Linux #Btrfs #OpenSource
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Sep 27, 2020
Understanding btrfs internals part 2 #Linux #Btrfs #OpenSource
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Sep 14, 2020
Waiting on process exit #Linux #OpenSource #Programming
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Sep 13, 2020
On writing unmaintainable code #SoftwareDevelopment #Programming #OpenSource
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Sep 13, 2020
Setting up a barebones website #WebDev #OpenSource #Programming
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Sep 13, 2020