Messages in this thread | | | Date | Sun, 04 Sep 2011 09:53:05 +0800 | From | Wu Fengguang <> | Subject | [PATCH 00/18] IO-less dirty throttling v11 |
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Hi,
Finally, the complete IO-less balance_dirty_pages(). NFS is observed to perform better or worse depending on the memory size. Otherwise the added patches can address all known regressions.
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback.git dirty-throttling-v11 (to be updated; currently it contains a pre-release v11)
Changes since v10:
- complete the renames - add protections for IO queue underrun - pause time reduction - bdi reserve area - bdi underrun flag - more accurate task dirty accounting for - sub-page writes - FS re-dirties - short lived tasks
Changes since v9:
- a lot of renames and comment/changelog rework, again - seperate out the dirty_ratelimit update policy (as patch 04) - add think time compensation - add 3 trace events
Changes since v8:
- a lot of renames and comment/changelog rework - use 3rd order polynomial as the global control line (Peter) - stabilize dirty_ratelimit by decreasing update step size on small errors - limit per-CPU dirtied pages to avoid dirty pages run away on 1k+ tasks (Peter)
Thanks a lot to Peter, Vivek, Andrea and Jan for the careful reviews!
shortlog:
Wu Fengguang (18): writeback: account per-bdi accumulated dirtied pages writeback: dirty position control writeback: dirty rate control writeback: stabilize bdi->dirty_ratelimit writeback: per task dirty rate limit writeback: IO-less balance_dirty_pages() writeback: dirty ratelimit - think time compensation writeback: trace dirty_ratelimit writeback: trace balance_dirty_pages writeback: dirty position control - bdi reserve area block: add bdi flag to indicate risk of io queue underrun writeback: balanced_rate cannot exceed write bandwidth writeback: limit max dirty pause time writeback: control dirty pause time writeback: charge leaked page dirties to active tasks writeback: fix dirtied pages accounting on sub-page writes writeback: fix dirtied pages accounting on redirty btrfs: fix dirtied pages accounting on sub-page writes
diffstat:
block/blk-core.c | 7 fs/btrfs/file.c | 3 fs/fs-writeback.c | 2 include/linux/backing-dev.h | 26 include/linux/blkdev.h | 12 include/linux/sched.h | 8 include/linux/writeback.h | 5 include/trace/events/writeback.h | 151 ++++- kernel/exit.c | 2 kernel/fork.c | 4 mm/backing-dev.c | 3 mm/page-writeback.c | 768 +++++++++++++++++++++++------ 12 files changed, 816 insertions(+), 175 deletions(-)
Thanks, Fengguang
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