Brian Behlendorf 0936c3449f Add spl_kmem_cache_expire module option ... Cache aging was implemented because it was part of the default Solaris kmem_cache behavior. The idea is that per-cpu objects which haven't been accessed in several seconds should be returned to the cache. On the other hand Linux slabs never move objects back to the slabs unless there is memory pressure on the system. This behavior is now configurable through the 'spl_kmem_cache_expire' module option. The value is a bit mask with the following meaning. 0x1 - Solaris style cache aging eviction is enabled. 0x2 - Linux style low memory eviction is enabled. Both methods may be safely enabled simultaneously, but by default both are disabled. It has never been clear if the kmem cache aging (which has been around from day one) actually does any good. It has however been the source of numerous bugs so I wouldn't mind retiring it entirely. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes zfsonlinux/zfs#1227 Closes #210		2013-01-28 09:34:12 -08:00
..
spl	Add spl_kmem_cache_expire module option	2013-01-28 09:34:12 -08:00
splat	Add spl_kmem_cache_expire module option	2013-01-28 09:34:12 -08:00
.gitignore	Remove Makefile from non-toplevel .gitignore files	2012-08-23 12:49:04 -07:00
Makefile.in	Add script for builtin module building.	2012-07-26 15:13:09 -07:00