Blog: Finding Out How Well Your Filesystem Cache is Working

MCA Tips Feed. If you are not getting the performance you expect from your ZFS filesystem, I/O may be the culprit. To help, ZFS provides the Adaptive Replacement Cache, or ARC. But do you know how well the ARC is working? You will if you analyze it with DTrace probes. Brendan Gregg describes how.

Direct link: http://dtrace.org/blogs/brendan/2012/01/09/activity-of-the-zfs-arc/