[Qemu-block] [PATCH v3 00/21] Extended I/O accounting

[Alberto Garcia]

Here's a new version of the extended I/O accounting patches.

This one is rebased on top of the current master, has a few minor
documentation fixes and drops the 'supports_stats' field completely.

Regards,

Berto

v3:
- Rebased on top of the current master and on Max's BlockBackend
  series v7
- patch 4: minor documentation fixes
- patch 5: s/miliseconds/nanoseconds/
- patch 6: dropped, there's no "supports_stats" anymore
- patch 7 (now 6): explain why block_acct_invalid() does not update
          total_time_ns[]
- patch 12 (now 11): don't initialize BlockAcctCookie to { 0 }, it's
           not needed

v2: https://lists.gnu.org/archive/html/qemu-block/2015-10/msg00161.html
- First complete implementation of the new statistics

v1: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg03321.html
- Initial series containing only the timed average infrastructure.

Alberto Garcia (21):
  xen_disk: Account for flush operations
  ide: Account for write operations correctly
  block: define 'clock_type' for the accounting code
  util: Infrastructure for computing recent averages
  block: Add idle_time_ns to BlockDeviceStats
  block: Add statistics for failed and invalid I/O operations
  block: Allow configuring whether to account failed and invalid ops
  block: Compute minimum, maximum and average I/O latencies
  block: Add average I/O queue depth to BlockDeviceTimedStats
  block: New option to define the intervals for collecting I/O
    statistics
  qemu-io: Account for failed, invalid and flush operations
  block: Use QEMU_CLOCK_VIRTUAL for the accounting code in qtest mode
  iotests: Add test for the block device statistics
  nvme: Account for failed and invalid operations
  virtio-blk: Account for failed and invalid operations
  xen_disk: Account for failed and invalid operations
  atapi: Account for failed and invalid operations
  ide: Account for failed and invalid operations
  macio: Account for failed operations
  scsi-disk: Account for failed operations
  block: Update copyright of the accounting code

 block/accounting.c           | 123 ++++++++++++++-
 block/block-backend.c        |   1 +
 block/qapi.c                 |  51 +++++++
 blockdev.c                   |  53 +++++++
 hmp.c                        |   4 +-
 hw/block/nvme.c              |  11 +-
 hw/block/virtio-blk.c        |   4 +-
 hw/block/xen_disk.c          |  27 +++-
 hw/ide/atapi.c               |  31 ++--
 hw/ide/core.c                |  12 +-
 hw/ide/macio.c               |  12 +-
 hw/scsi/scsi-disk.c          |  46 ++++--
 include/block/accounting.h   |  28 ++++
 include/qemu/timed-average.h |  64 ++++++++
 qapi/block-core.json         | 103 ++++++++++++-
 qemu-io-cmds.c               |   9 ++
 qmp-commands.hx              |  80 +++++++++-
 tests/Makefile               |   4 +
 tests/qemu-iotests/136       | 349 +++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/136.out   |   5 +
 tests/qemu-iotests/group     |   1 +
 tests/test-timed-average.c   |  90 +++++++++++
 util/Makefile.objs           |   1 +
 util/timed-average.c         | 227 ++++++++++++++++++++++++++++
 24 files changed, 1288 insertions(+), 48 deletions(-)
 create mode 100644 include/qemu/timed-average.h
 create mode 100644 tests/qemu-iotests/136
 create mode 100644 tests/qemu-iotests/136.out
 create mode 100644 tests/test-timed-average.c
 create mode 100644 util/timed-average.c

-- 
2.6.1