https://blog.cui.to/en/post/tag/performance/ Samuel N Cui’s personal blog: technology, projects and life. en-US https://blog.cui.to/en/post/zfs-on-linux-%E6%8F%90%E5%8D%87%E8%AF%BB%E5%8F%96%E6%80%A7%E8%83%BD/ https://blog.cui.to/en/post/zfs-on-linux-%E6%8F%90%E5%8D%87%E8%AF%BB%E5%8F%96%E6%80%A7%E8%83%BD/ Tue, 13 Sep 2022 14:14:08 +0800 Examines unexpectedly low drive utilization during reads from an eight-disk RAIDZ2 pool and describes improving throughput by adjusting ZFS’s zfetch_max_distance prefetch parameter. https://blog.cui.to/en/post/fix-overheating-of-sst-ds380b/ https://blog.cui.to/en/post/fix-overheating-of-sst-ds380b/ Wed, 14 Mar 2018 14:56:50 +0800 Describes two ABS-sheet airflow modifications to a DS380B NAS case: first cooling the drive cage, then addressing a CPU airflow dead zone. The post records the layout changes and the resulting drive and CPU temperatures.