MongoDB Best Practices: Security, Data Modeling, & Schema Design
Percona
APRIL 17, 2023
The swap issue is explained in the excellent article by Jeremy Cole at the Swap Insanity and NUMA Architecture. Make sure the drives are mounted with noatime and also if the drives are behind a RAID controller with appropriate battery-backed cache. There is an issue with this, which causes the OS to swap even with memory available.
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