Tomáš Vondra
where else to find them
what they talk about
where they keep going back
- POSETTE: An Event for Postgres3 editions2024–2026
- PostgreSQL Conference Europe3 editions2023–2025
all 4 in the filters
on a stage with
never shared a talk
who talks about the same things
- Lætitia Avrot18 talks
- Dmitrii Dolgov6 talks
- Ibrar Ahmed12 talks
- Matt Yonkovit17 talks
- Bruce Momjian52 talks
- Samay Sharma5 talks
| title | conference | date |
|---|---|---|
| random_page_cost in Postgres - why the default is 4.0 and should you lower it? | POSETTE: An Event for Postgres 2026 | 2026-06-16 |
Recreates the original 2000s experiment: large uniform tables, forcing index vs sequential scans, and measuring per-page timings with direct I/O and EXPLAIN… | ||
| Fast-path locking improvements in PG18 | PostgreSQL Conference Europe 2025 | 2025-10-21 |
PG18 expands fast-path locking capacity (default 16 → 64 entries, tunable via max_locks_per_transaction) and implements a small set-associative small buffers… | ||
| Performance Archaeology - 20 years of improvements | POSETTE: An Event for Postgres 2025 | 2025-06-10 |
Benchmarks run pgbench (Postgres 18 client) and TPC-H on two machines (44‑core/88‑thread for OLTP, SSD small server for OLAP) comparing releases from 8.0→18.0… | ||
| Fast-path locking improvements in PG18 | PGConf.dev 2025 | 2025-05-13 |
Postgres 18 expands fast‑path locking from a fixed 16‑oid per‑backend buffer to any number of 16‑way set‑associative chunks (size tied to… | ||
| Performance Archaeology | PostgreSQL Conference Europe 2024 | 2024-10-22 |
Benchmarks reconstruct PostgreSQL performance from 8.0 through the current development tip (PostgreSQL 18) using PGBench from PostgreSQL 18, TPCH, and… | ||
| Where do the performance cliffs come from? | POSETTE: An Event for Postgres 2024 | 2024-06-11 |
Explains why Postgres produces abrupt slowdowns with concrete numbers: a hard-coded hash-table threshold at 9 values makes removing one IN element double… | ||
| Postgres vs. Linux filesystems | PostgreSQL Conference Europe 2023 | 2023-12-12 |
Benchmarks run on 6.3 kernels with pgbench and pg_dump against NVMe and SATA SSDs on a two‑socket 32‑core box, scale factors 100/500/2000 (IO‑bound at the… | ||
| BRIN improvements and new opclasses | PGCon 2023 | 2023-05-30 |
BRIN indexes chunk the heap into ~1MB ranges and store compact summaries so a 3.5GB table yields a BRIN under 1MB versus a B-tree ~50–65MB; on 10M-row tests… | ||
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