How Solaris ZFS Cache Management Differs From UFS and VxFS File Systems
Last updated on JANUARY 02, 2018
Applies to:Solaris Operating System - Version 10 3/05 and later
ZFS manages its cache differently to other filesystems such as: UFS and VxFS. ZFS' use of kernel memory as a cache results in higher kernel memory allocation as compared to UFS and VxFS filesystems. Monitoring a system with tools such as vmstat would report less free memory with ZFS and may lead to unnecessary support calls.
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