On May 8, 2011, at 7:56 AM, Edward Ned Harvey wrote: >> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >> boun...@opensolaris.org] On Behalf Of Edward Ned Harvey >> >> That could certainly start to explain why my >> arc size arcstats:c never grew to any size I thought seemed reasonable... > > > Also now that I'm looking closer at arcstats, it seems arcstats:size might > be the appropriate measure, not arcstats:c
size is the current size. c is the target size. c_min and c_max are the target min and max, respectively. The source is well commented and describes the ARC algorithms and kstats in detail. http://src.illumos.org/source/xref/illumos-gate/usr/src/uts/common/fs/zfs/arc.c What is not known is how well the algorithms work for the various use cases we encounter. That will be an ongoing project for a long time. -- richard
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