git: kernel - Performance improvements during heavy memory/IO us
commit 3038a8caa1068d2a58b982b5033ccd015d6c8a07
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Thu Nov 10 16:32:10 2011 -0800
kernel - Performance improvements during heavy memory/IO use
* Remove the vm.vm_load logic, it was breaking things worse and fixing
things not so much.
* Fix a bug in the pageout algorithm that was causing the PQ_ACTIVE queue
to drain excessively, messing up the LRU/activity algorithm.
* Rip out hammer_limit_running_io and instead just call waitrunningbufspace().
* Change the waitrunningbufspace() logic to add a bit of hyseresis and to
fairly block everyone doing write I/O, otherwise some threads may be
blocked while other threads are allowed to proceed while the buf_daemon
is trying to flush stuff out.
Summary of changes:
sys/kern/kern_clock.c | 5 ---
sys/kern/vfs_bio.c | 33 +++++++--------------
sys/sys/thread.h | 2 +-
sys/vfs/hammer/hammer.h | 3 +-
sys/vfs/hammer/hammer_flusher.c | 4 +-
sys/vfs/hammer/hammer_io.c | 10 +------
sys/vfs/hammer/hammer_vfsops.c | 17 -----------
sys/vm/vm_extern.h | 1 -
sys/vm/vm_fault.c | 59 ---------------------------------------
sys/vm/vm_pageout.c | 53 +++++++++++-----------------------
sys/vm/vm_pageout.h | 3 --
11 files changed, 33 insertions(+), 157 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/3038a8caa1068d2a58b982b5033ccd015d6c8a07
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DragonFly BSD source repository