Another Look At The Performance Impact To IBM's POWER9 L1d Flushing Change

Written by Michael Larabel in Software on 4 December 2020 at 10:00 AM EST. Page 3 of 4. 5 Comments.

This change did have a significant impact on the MariaDB and PostgreSQL database server performance. This was a much larger impact than what was seen on the smaller 4-core POWER9 system while also having different storage, etc.

Similarly, Redis was also seeing lower performance on the mitigated kernel.

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