git: VFS accounting: add in-memory storage counters
commit 95bf5f78c7cc3efd179978b5b65d2dcd1506d018
Author: Francois Tigeot <ftigeot@wolfpond.org>
Date: Sat Aug 13 11:34:39 2011 +0200
VFS accounting: add in-memory storage counters
* Use a red-black tree of small arrays to store uid and gid accounting
information.
User and group ids often come in small groups of consecutive numbers;
small arrays have a high probability of having more than one element
used at the same time, reducing pointer chasing in the binary tree.
* Also use a global per mount-point counter
* Only enable data collection for volumes which have been properly
initialized
* Protect the counters by a per mount-point spinlock
Summary of changes:
sys/kern/vfs_default.c | 14 ------
sys/kern/vfs_init.c | 3 -
sys/kern/vfs_quota.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++-
sys/sys/mount.h | 35 ++++++++++++++-
sys/sys/vfs_quota.h | 7 +--
5 files changed, 147 insertions(+), 26 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/95bf5f78c7cc3efd179978b5b65d2dcd1506d018
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DragonFly BSD source repository