v.20.4Improvement

Check CPU Instructions Availability at Server Startup

Official CH changelog text
Check for available CPU instructions at server startup as early as possible. #9888 (alexey-milovidov)
ClickHouse now performs an early check for available CPU instructions during server startup.

Why it matters

This feature allows ClickHouse to detect CPU instruction set support as early as possible, enabling optimized code paths and improved performance based on the hardware capabilities of the server.

How to use it

No special configuration is required. The server automatically performs the CPU instruction detection during startup.

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