[PATCH for-5.0 v2 0/3] benchmark util

[Vladimir Sementsov-Ogievskiy]

Hi all!

Here is simple benchmarking utility, to generate performance
comparison tables, like the following:

----------  -------------  -------------  -------------
            backup-1       backup-2       mirror
ssd -> ssd  0.43 +- 0.00   4.48 +- 0.06   4.38 +- 0.02
ssd -> hdd  10.60 +- 0.08  10.69 +- 0.18  10.57 +- 0.05
ssd -> nbd  33.81 +- 0.37  10.67 +- 0.17  10.07 +- 0.07
----------  -------------  -------------  -------------

This is a v2, as v1 was inside
 "[RFC 00/24] backup performance: block_status + async"

I'll use this benchmark in other series, hope someone
will like it.

Vladimir Sementsov-Ogievskiy (3):
  python: add simplebench.py
  python: add qemu/bench_block_job.py
  python: add example usage of simplebench

 python/bench-example.py        |  80 +++++++++++++++++++++
 python/qemu/bench_block_job.py | 115 +++++++++++++++++++++++++++++
 python/simplebench.py          | 128 +++++++++++++++++++++++++++++++++
 3 files changed, 323 insertions(+)
 create mode 100644 python/bench-example.py
 create mode 100755 python/qemu/bench_block_job.py
 create mode 100644 python/simplebench.py

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2.18.0