Performance on Yongjie Xuehttps://www.yongjiexue.io/en/tags/performance/Recent content in Performance on Yongjie XueHugoen-USThu, 11 Jun 2026 00:00:00 +0000The Cognitive Price Revolution: AI's Impact on the Economy and the Futurehttps://www.yongjiexue.io/en/ai/mind-price/Thu, 11 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/mind-price/AI’s economic significance is not merely that it has become smarter, but that the price of average cognition is collapsing. A productivity explosion is almost certain; whether it becomes broad prosperity depends on whether distribution catches up.Scaling Postgres to the next level at OpenAIhttps://www.yongjiexue.io/en/db/openai-pg/Mon, 19 May 2025 00:00:00 +0000https://www.yongjiexue.io/en/db/openai-pg/At PGConf.Dev 2025, Bohan Zhang from OpenAI shared a session titled Scaling Postgres to the next level at OpenAI, giving us a peek into the database usage of a top-tier unicorn.Optimize Bio Cores First, CPU Cores Secondhttps://www.yongjiexue.io/en/db/bio-core-cpu-core/Sat, 07 Sep 2024 00:00:00 +0000https://www.yongjiexue.io/en/db/bio-core-cpu-core/Programmers are expensive, scarce biological computing cores, the anchor point of software costs — please prioritize optimizing biological cores before optimizing CPU cores.PostgreSQL's Impressive Scalabilityhttps://www.yongjiexue.io/en/pg/pg-scalability/Sat, 13 Jan 2024 00:00:00 +0000https://www.yongjiexue.io/en/pg/pg-scalability/This article describes how Cloudflare scaled to support 55 million requests per second using 15 PostgreSQL clusters, and PostgreSQL’s scalability performance.PostgreSQL Macro Query Optimization with pg_stat_statementshttps://www.yongjiexue.io/en/pg/pgss/Thu, 26 Oct 2023 00:00:00 +0000https://www.yongjiexue.io/en/pg/pgss/Query optimization is one of the core responsibilities of DBAs. This article introduces how to use metrics provided by pg_stat_statements for macro-level PostgreSQL query optimization.How Powerful is PostgreSQL Really?https://www.yongjiexue.io/en/pg/pg-performence/Mon, 22 Aug 2022 00:00:00 +0000https://www.yongjiexue.io/en/pg/pg-performence/Let performance data speak: Why PostgreSQL is the world’s most advanced open-source relational database, aka the world’s most successful database. MySQL vs PostgreSQL performance showdown and distributed database reality check.A Methodology for Diagnosing PostgreSQL Slow Querieshttps://www.yongjiexue.io/en/pg/slow-query/Tue, 23 Feb 2021 00:00:00 +0000https://www.yongjiexue.io/en/pg/slow-query/Slow queries are the sworn enemy of OLTP databases. Here’s how to identify, analyze, and fix them using metrics (Pigsty dashboards), pg_stat_statements, and logs.Testing Disk Performance with FIOhttps://www.yongjiexue.io/en/pg/fio/Tue, 06 Feb 2018 00:00:00 +0000https://www.yongjiexue.io/en/pg/fio/FIO is a convenient tool for testing disk I/O performanceUsing sysbench to Test PostgreSQL Performancehttps://www.yongjiexue.io/en/pg/sysbench/Tue, 06 Feb 2018 00:00:00 +0000https://www.yongjiexue.io/en/pg/sysbench/Although PostgreSQL provides pgbench, sometimes you need sysbench to outperform MySQL.