git: kernel - Fix fragmentation and object list scan bug in swap
commit f5f6d24720b2a6d59adc2d6af68754ed3382ff20
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Tue Nov 29 20:46:03 2011 -0800
kernel - Fix fragmentation and object list scan bug in swapcache
* When swapcache reaches maxswappct (typically 75% of swap) it reduces
swap use before allowing it to continue to build again, with some
hysteresis.
* The cleanup phase which reduces swap use was seriously fragmenting swap
space by cleaning up too small a portion of each VM object.
* Increase the amount cleaned up before moving onto the next VM object.
* Fix bugs in the vm_object_list traversal which could result in a bad
object being accessed followed by a panic.
Summary of changes:
sys/vm/vm_swapcache.c | 127 +++++++++++++++++++++++++++++++++---------------
1 files changed, 87 insertions(+), 40 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f5f6d24720b2a6d59adc2d6af68754ed3382ff20
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