DragonFly-2.3.1.327.g39d8f master sys/vfs/hammer hammer.h hammer
commit 39d8fd636004057de2f4039d0c527e8a5194fb08
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Sat Jun 20 16:53:21 2009 -0700
HAMER VFS - Cache additional b-tree nodes in directory.
* Cache inode record cursors in the directory at dip->cache[2] to reduce
cpu overhead when iterating a directory.
* Cache file object record cursors in the file's governing directory at
dip->cache[3] after reading the last data record in a file, to reduce
cpu overhead when chain-reading files.
* Also add vfs.hammer.stats_btree_root_iterations, a counter which
is incremented whenever a B-Tree search is initiated from the root
node.
Summary of changes:
sys/vfs/hammer/hammer.h | 6 +++-
sys/vfs/hammer/hammer_cursor.c | 3 ++
sys/vfs/hammer/hammer_inode.c | 65 +++++++++++++++++++++++++++++++++++++--
sys/vfs/hammer/hammer_vfsops.c | 3 ++
sys/vfs/hammer/hammer_vnops.c | 20 ++++++++++++
5 files changed, 92 insertions(+), 5 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/39d8fd636004057de2f4039d0c527e8a5194fb08
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