K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2014-10-07T16:08:21.468360Z
K 7
svn:log
V 476
l2arc_write_buffers: reduce headroom value

FreeBSD has ARC_BUFC_NUMMETADATALISTS metadata lists and ARC_BUFC_NUMDATALISTS
data lists (currently both are 16) while illumos has just a single list
of each kind.

headroom determines how much data is scanned on a single list
during each run of the l2arc feed thread.
Because FreeBSD has more lists we proportionally decrease the limit.

Reviewed by:	Brendan Gregg (earlier version)
MFC after:	2 weeks
Sponsored by:	HybridCluster

END