@clflushopt
@clflushopt.bsky.social
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recovering mathematician -- database hacker
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hello
about 1 year ago
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@clflushopt
DuckDB
2 months ago
Big Data on the Move: Can a Framework Laptop 13 ultrabook run terabyte-sized workloads with DuckDB?
@szarnyasg.org
ran the experiments and shared his finding in our latest blog post:
duckdb.org/2025/09/08/d...
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Big Data on the Move: DuckDB on the Framework Laptop 13
We put DuckDB through its paces on a 12-core ultrabook with 128 GB RAM, running TPC-H queries up to SF10,000.
https://duckdb.org/2025/09/08/duckdb-on-the-framework-laptop-13
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As someone who has exclusively used Rust, Go and C++ for the past 8+ years I find the JVM stack (lots of Java & Scala) a breadth of fresh air from a tooling and productivity perspective.
4 months ago
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Julia Evans
6 months ago
I think I have finally managed to articulate this very fundamental but slightly counterintuitive fact about how shell redirection works
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Stopped once I hit the 18 seconds total runtime, code is available here
github.com/clflushopt/s...
might take this for another tour, still lots of tricks to pull (custom hashtable for the joins, morsel driven parallelism...)
add a skeleton here at some point
6 months ago
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My work on SIGMOD 2025 (unregistered) continues my implementation now runs in 24 seconds instead of 11 minutes on my hardware (Ryzen 9 9950x), next goal is sub 10s. I will write a blog post about this, since I was led down some dangerous paths hint
blog.llvm.org/2011/05/what...
#SIGMOD2025
7 months ago
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I am not having fun trying to reverse engineer and implement the TUM's db group paper on hash tables for join processing
db.in.tum.de/~birler/pape...
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https://db.in.tum.de/~birler/papers/hashtable.pdf
7 months ago
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Andrew Lamb
7 months ago
@apachedatafusion.bsky.social
supports a fully extensible range of user defined window functions as well as scalar, aggregate and table functions. Aditya Singh Rathore's new blog has more:
datafusion.apache.org/blog/2025/04...
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User defined Window Functions in DataFusion - Apache DataFusion Blog
https://datafusion.apache.org/blog/2025/04/19/user-defined-window-functions/
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Bryan Cantrill
8 months ago
A great question -- and one that I used as a foundation for an entire talk
speakerdeck.com/bcantrill/th...
add a skeleton here at some point
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seven rasmussen
12 months ago
can I code fast? no. but can I code well? also no. but does my code work? alas, no
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hello
about 1 year ago
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