tests/migration/guestperf/scenario.py

   1 #
   2 # Migration test scenario parameter description
   3 #
   4 # Copyright (c) 2016 Red Hat, Inc.
   5 #
   6 # This library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10 #
  11 # This library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20
  21 class Scenario(object):
  22
  23     def __init__(self, name,
  24                  downtime=500,
  25                  bandwidth=125000, # 1000 gig-e, effectively unlimited
  26                  max_iters=30,
  27                  max_time=300,
  28                  pause=False, pause_iters=5,
  29                  post_copy=False, post_copy_iters=5,
  30                  auto_converge=False, auto_converge_step=10,
  31                  compression_mt=False, compression_mt_threads=1,
  32                  compression_xbzrle=False, compression_xbzrle_cache=10,
  33                  multifd=False, multifd_channels=2):
  34
  35         self._name = name
  36
  37         # General migration tunables
  38         self._downtime = downtime  # milliseconds
  39         self._bandwidth = bandwidth # MiB per second
  40         self._max_iters = max_iters
  41         self._max_time = max_time # seconds
  42
  43
  44         # Strategies for ensuring completion
  45         self._pause = pause
  46         self._pause_iters = pause_iters
  47
  48         self._post_copy = post_copy
  49         self._post_copy_iters = post_copy_iters
  50
  51         self._auto_converge = auto_converge
  52         self._auto_converge_step = auto_converge_step # percentage CPU time
  53
  54         self._compression_mt = compression_mt
  55         self._compression_mt_threads = compression_mt_threads
  56
  57         self._compression_xbzrle = compression_xbzrle
  58         self._compression_xbzrle_cache = compression_xbzrle_cache # percentage of guest RAM
  59
  60         self._multifd = multifd
  61         self._multifd_channels = multifd_channels
  62
  63     def serialize(self):
  64         return {
  65             "name": self._name,
  66             "downtime": self._downtime,
  67             "bandwidth": self._bandwidth,
  68             "max_iters": self._max_iters,
  69             "max_time": self._max_time,
  70             "pause": self._pause,
  71             "pause_iters": self._pause_iters,
  72             "post_copy": self._post_copy,
  73             "post_copy_iters": self._post_copy_iters,
  74             "auto_converge": self._auto_converge,
  75             "auto_converge_step": self._auto_converge_step,
  76             "compression_mt": self._compression_mt,
  77             "compression_mt_threads": self._compression_mt_threads,
  78             "compression_xbzrle": self._compression_xbzrle,
  79             "compression_xbzrle_cache": self._compression_xbzrle_cache,
  80             "multifd": self._multifd,
  81             "multifd_channels": self._multifd_channels,
  82         }
  83
  84     @classmethod
  85     def deserialize(cls, data):
  86         return cls(
  87             data["name"],
  88             data["downtime"],
  89             data["bandwidth"],
  90             data["max_iters"],
  91             data["max_time"],
  92             data["pause"],
  93             data["pause_iters"],
  94             data["post_copy"],
  95             data["post_copy_iters"],
  96             data["auto_converge"],
  97             data["auto_converge_step"],
  98             data["compression_mt"],
  99             data["compression_mt_threads"],
 100             data["compression_xbzrle"],
 101             data["compression_xbzrle_cache"],
 102             data["multifd"],
 103             data["multifd_channels"])