[Qemu-devel] [PATCH V4 0/5] Continuous Leaky Bucket Throttling

["Benoît Canet" <benoit@irqsave.net>]

This patchset implement continous leaky bucket throttling.

It use two requests queue to enable to do silly unbalanced throttling like
block_set_io_throttle 0 0 0 0 6000 1

It use two timer to get the timer callbacks and the throttle.c code simple

It add unit tests.

It fail with the following error message at exit and I don't know why yet.
qemu-system-x86_64: block.c:1489: bdrv_drain_all: Assertion
`((&bs->tracked_requests)->lh_first == ((void *)0))' failed.

The throttling core is pretty solid and the surrouding of the patchset needs
polish. (new options ...)

since previous version:
    wrap qemu-option.hx declararation [Eric]
    continuus -> continuous [Fam]
    unit test [Paolo]

Benoît Canet (5):
  throttle: Add a new throttling API implementing continuous leaky
    bucket.
  throttle: Add units tests
  block: Enable the new throttling code in the block layer.
  block: Add support for throttling burst max in QMP and the command
    line.
  block: Add iops_sector_count to do the iops accounting for a given io
    size.

 block.c                   |  351 ++++++++++----------------------
 block/qapi.c              |   50 +++--
 blockdev.c                |  207 ++++++++++++++-----
 hmp.c                     |   36 +++-
 include/block/block.h     |    1 -
 include/block/block_int.h |   32 +--
 include/qemu/throttle.h   |  105 ++++++++++
 qapi-schema.json          |   40 +++-
 qemu-options.hx           |    4 +-
 qmp-commands.hx           |   34 +++-
 tests/Makefile            |    2 +
 tests/test-throttle.c     |  494 +++++++++++++++++++++++++++++++++++++++++++++
 util/Makefile.objs        |    1 +
 util/throttle.c           |  391 +++++++++++++++++++++++++++++++++++
 14 files changed, 1405 insertions(+), 343 deletions(-)
 create mode 100644 include/qemu/throttle.h
 create mode 100644 tests/test-throttle.c
 create mode 100644 util/throttle.c

-- 
1.7.10.4