[PATCH 00/11] vinyl: prepare for transaction throttling

[Vladimir Davydov]

This patch set contains preparatory patches necessary for implementing
transaction throttling. It does some refactoring, introduces basic
throttling based on dump bandwidth, and splits the rate limit in soft
and hard, which is necessary for compaction based throttling. The only
thing left is invent such a throttling policy that guarantees that
compaction always keeps up with dumps.

https://github.com/tarantool/tarantool/issues/1862
https://github.com/tarantool/tarantool/tree/dv/gh-1862-vy-throttling

Vladimir Davydov (11):
  vinyl: merge vy_quota_release and vy_quota_update_dump_bandwidth
  vinyl: refactor quota use/unuse methods
  vinyl: do not try to trigger dump if it is already in progress
  vinyl: don't start quota timer until local recovery is complete
  vinyl: add helper to start scheduler and enable quota on startup
  vinyl: zap vy_env::memory, read_threads, and write_threads
  vinyl: do not account zero dump bandwidth
  vinyl: set quota timer period to 100 ms
  vinyl: implement basic transaction throttling
  vinyl: implement quota wait queue without fiber_cond
  vinyl: split quota consumption rate limit into soft and hard

 src/box/vinyl.c              |  79 +++++-----
 src/box/vy_quota.c           | 340 +++++++++++++++++++++++++++++++++----------
 src/box/vy_quota.h           | 146 +++++++++++++++----
 src/box/vy_run.c             |  12 +-
 src/box/vy_run.h             |  17 ++-
 test/unit/vy_point_lookup.c  |   2 +-
 test/vinyl/suite.ini         |   2 +-
 test/vinyl/throttle.result   | 102 +++++++++++++
 test/vinyl/throttle.test.lua |  54 +++++++
 9 files changed, 601 insertions(+), 153 deletions(-)
 create mode 100644 test/vinyl/throttle.result
 create mode 100644 test/vinyl/throttle.test.lua

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2.11.0