[Qemu-commits] [qemu/qemu] 1b7306: scripts/simplebench: compare write request perform...

[Peter Maydell]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: 1b7306f5dd7a80f4797c1644d539409031663782
      
https://github.com/qemu/qemu/commit/1b7306f5dd7a80f4797c1644d539409031663782
  Author: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
  Date:   2020-09-18 (Fri, 18 Sep 2020)

  Changed paths:
    A scripts/simplebench/bench_write_req.py

  Log Message:
  -----------
  scripts/simplebench: compare write request performance

The script 'bench_write_req.py' allows comparing performances of write
request for two qemu-img binary files.
An example with (qemu-img binary 1) and without (qemu-img binary 2) the
applied patch "qcow2: skip writing zero buffers to empty COW areas"
(git commit ID: c8bb23cbdbe32f5) has the following results:

SSD:
----------------  -------------------  -------------------
                  <qemu-img binary 1>  <qemu-img binary 2>
<cluster front>   0.10 +- 0.00         8.16 +- 0.65
<cluster middle>  0.10 +- 0.00         7.37 +- 1.10
<cross cluster>   7.40 +- 1.08         21.97 +- 4.19
<cluster 64K>     2.14 +- 0.94         8.48 +- 1.66
----------------  -------------------  -------------------
HDD:
----------------  -------------------  -------------------
                  <qemu-img binary 1>  <qemu-img binary 2>
<cluster front>   2.30 +- 0.01         6.19 +- 0.06
<cluster middle>  2.20 +- 0.09         6.20 +- 0.06
<cross cluster>   8.32 +- 0.16         8.26 +- 0.14
<cluster 64K>     8.20 +- 0.05         6.26 +- 0.10
----------------  -------------------  -------------------

Suggested-by: Denis V. Lunev <den@openvz.org>
Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1594741846-475697-1-git-send-email-andrey.shinkevich@virtuozzo.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>


  Commit: 14f9cec7132bc60f9839048b0a0f8ef7ae9ed64c
      
https://github.com/qemu/qemu/commit/14f9cec7132bc60f9839048b0a0f8ef7ae9ed64c
  Author: Alexey Kirillov <lekiravi@yandex-team.ru>
  Date:   2020-09-18 (Fri, 18 Sep 2020)

  Changed paths:
    M scripts/analyze-migration.py

  Log Message:
  -----------
  analyze-migration.py: fix read_migration_debug_json() return type

Since we use result of read_migration_debug_json() as JSON formatted string,
we must provide proper type. Before Python 3.6 json.loads() method
support only str typed input.

Signed-off-by: Alexey Kirillov <lekiravi@yandex-team.ru>
Message-Id: <20200715152135.20287-1-lekiravi@yandex-team.ru>
[ehabkost: added comment explaining why decode() is needed}
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>


  Commit: 5536c19d911aba652ac7454ef4ac65912b198c21
      
https://github.com/qemu/qemu/commit/5536c19d911aba652ac7454ef4ac65912b198c21
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   2020-09-21 (Mon, 21 Sep 2020)

  Changed paths:
    M scripts/analyze-migration.py
    A scripts/simplebench/bench_write_req.py

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' 
into staging

Python queue, 2020-09-18

Alexey Kirillov (1):
      analyze-migration.py: fix read_migration_debug_json() return type

Andrey Shinkevich (1):
      scripts/simplebench: compare write request performance

# gpg: Signature made Fri 18 Sep 2020 19:02:00 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
  analyze-migration.py: fix read_migration_debug_json() return type
  scripts/simplebench: compare write request performance

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>


Compare: https://github.com/qemu/qemu/compare/053a4177817d...5536c19d911a