mirror_zfs/module
Tim Chase 5074bfe8ad Allocate zfs_znode_cache on the Linux slab
The Linux slab, in general, performs better than the SPl slab in cases
where a lot of objects are allocated and fragmentation is likely present.

This patch fixes pathologically bad behavior in cases where the ARC is
filled with mostly metadata and a user program needs to allocate and
dirty enough memory which would require an insignificant amount of the
ARC to be reclaimed.

If zfs_znode_cache is on the SPL slab, the system may spin for a very
long time trying to reclaim sufficient memory.  If it is on the Linux
slab, the behavior has been observed to be much more predictible; the
memory is reclaimed more efficiently.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #3283
2015-04-14 12:19:22 -07:00
..
avl Retire spl_module_init()/spl_module_fini() 2015-02-24 11:37:44 -08:00
nvpair Retire spl_module_init()/spl_module_fini() 2015-02-24 11:37:44 -08:00
unicode Retire spl_module_init()/spl_module_fini() 2015-02-24 11:37:44 -08:00
zcommon Change ASSERT(!"...") to cmn_err(CE_PANIC, ...) 2015-03-03 13:22:21 -08:00
zfs Allocate zfs_znode_cache on the Linux slab 2015-04-14 12:19:22 -07:00
zpios Retire spl_module_init()/spl_module_fini() 2015-02-24 11:37:44 -08:00
.gitignore gitignore: anchor entries at their respective directory 2013-04-02 10:50:17 -07:00
Makefile.in Fix modules installation directory 2014-10-28 09:46:14 -07:00