~/lightning

Lightning Talk: A Fast, Concurrent Data Loader for Time-Series Data

Lightningat CppCon 2023 · on Monday, 2023-10-02· [databases]
links:none on file
slides:none on file

A concrete design that reads ~20,000 files (10 GB) by timestamp and aggregates heterogeneous streams uses three levels: data loader, node loader, and data reader with a loading thread per reader feeding a lockless q sized to bound memory; conditional variables coordinate consumption so frames are freed when used. Measured results drop load time from 87% of runtime to ~1.5%, delivering a 60x speedup and a 10x program speedup that enables CI runs and concurrent simulations.

AI-written summary · about

  1. 0:00Introduction
  2. 1:11What is a data loader
  3. 2:22The design
  4. 3:52Results
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