Jamie Brandon jamii

Tinkering with systems. Writing at scattered-thoughts.net.

Currently working on storage and queries at TigerBeetle. Previously on incrementally maintained sql views at Materialize, in-database machine learning at RelationalAI, declarative languages for UI at LogicBlox and end-user programming and query languages at Eve, interspersed with myriad consulting gigs and regular bouts of independent research.

In Vancouver, BC. Say hi if you're in town.

Created 19 commits in 1 repository

tigerbeetledb/tigerbeetle 19 commits

Created a pull request in tigerbeetledb/tigerbeetle that received 2 comments
Mar 9

Expand tracing

New traces: Trace start/end for every grid read_iop and write_iop. Trace start/end for every io flush and callback. Plot depth of every FIFO. Plot…

+481 −396 • 2 comments

Opened 3 other pull requests in 1 repository

tigerbeetledb/tigerbeetle 3 open

Increase the grid cache size in production to 16gb Mar 11

Use the c implementation of blake3 Mar 11

Trace number of io completions queued in sqe and number actually submitted to the kernel Mar 10

Reviewed 2 pull requests in 1 repository

tigerbeetledb/tigerbeetle 2 pull requests

forest_fuzz crash testing Mar 7

Benchmark: use -Dconfig=production over development Mar 1

Created an issue in tigerbeetledb/tigerbeetle that received 8 comments
Mar 8

Compaction reads seem to entirely miss the grid cache.

Here's a sample trace zoomed in on a single compact. We see 17 hits and 9008 misses. Compare to prefetching, with 18260 hits and 9 misses. Possib…

8 comments

Opened 4 other issues in 2 repositories

tigerbeetledb/tigerbeetle 3 open

Prefetch becomes a bottleneck as database size grows Mar 9

Gap after checkpoint Mar 9

Sorting table_mutable starves IO Mar 8

wolfpld/tracy 1 closed

Configuring plots from TracyC.h Mar 8

46 contributions in private repositories Mar 1 – Mar 5

Jamie Brandon jamii

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1,226 contributions in the last year

Activity overview

Contribution activity

March 2023

Created a pull request in tigerbeetledb/tigerbeetle that received 2 comments

Expand tracing

Created an issue in tigerbeetledb/tigerbeetle that received 8 comments

Compaction reads seem to entirely miss the grid cache.