Hi,
The core algorithms for IO-less balance_dirty_pages().
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback.git dirty-throttling-v10
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 and Andrea for the careful reviews!
shortlog:
Wu Fengguang (10):
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 balance_dirty_pages
writeback: trace dirty_ratelimit
trace task_io (RFC)
diffstat:
fs/fs-writeback.c | 2 +-
include/linux/backing-dev.h | 8 +
include/linux/sched.h | 8 +
include/linux/writeback.h | 1 +
include/trace/events/writeback.h | 181 +++++++++--
kernel/fork.c | 4 +
mm/backing-dev.c | 3 +
mm/page-writeback.c | 664 +++++++++++++++++++++++++++++---------
8 files changed, 693 insertions(+), 178 deletions(-)
Thanks,
Fengguang
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