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                  dirty_limit=False, x_vcpu_dirty_limit_period=500,
  35                  vcpu_dirty_limit=1):
  36
  37         self._name = name
  38
  39         # General migration tunables
  40         self._downtime = downtime  # milliseconds
  41         self._bandwidth = bandwidth # MiB per second
  42         self._max_iters = max_iters
  43         self._max_time = max_time # seconds
  44
  45
  46         # Strategies for ensuring completion
  47         self._pause = pause
  48         self._pause_iters = pause_iters
  49
  50         self._post_copy = post_copy
  51         self._post_copy_iters = post_copy_iters
  52
  53         self._auto_converge = auto_converge
  54         self._auto_converge_step = auto_converge_step # percentage CPU time
  55
  56         self._compression_mt = compression_mt
  57         self._compression_mt_threads = compression_mt_threads
  58
  59         self._compression_xbzrle = compression_xbzrle
  60         self._compression_xbzrle_cache = compression_xbzrle_cache # percentage of guest RAM
  61
  62         self._multifd = multifd
  63         self._multifd_channels = multifd_channels
  64
  65         self._dirty_limit = dirty_limit
  66         self._x_vcpu_dirty_limit_period = x_vcpu_dirty_limit_period
  67         self._vcpu_dirty_limit = vcpu_dirty_limit
  68
  69     def serialize(self):
  70         return {
  71             "name": self._name,
  72             "downtime": self._downtime,
  73             "bandwidth": self._bandwidth,
  74             "max_iters": self._max_iters,
  75             "max_time": self._max_time,
  76             "pause": self._pause,
  77             "pause_iters": self._pause_iters,
  78             "post_copy": self._post_copy,
  79             "post_copy_iters": self._post_copy_iters,
  80             "auto_converge": self._auto_converge,
  81             "auto_converge_step": self._auto_converge_step,
  82             "compression_mt": self._compression_mt,
  83             "compression_mt_threads": self._compression_mt_threads,
  84             "compression_xbzrle": self._compression_xbzrle,
  85             "compression_xbzrle_cache": self._compression_xbzrle_cache,
  86             "multifd": self._multifd,
  87             "multifd_channels": self._multifd_channels,
  88             "dirty_limit": self._dirty_limit,
  89             "x_vcpu_dirty_limit_period": self._x_vcpu_dirty_limit_period,
  90             "vcpu_dirty_limit": self._vcpu_dirty_limit,
  91         }
  92
  93     @classmethod
  94     def deserialize(cls, data):
  95         return cls(
  96             data["name"],
  97             data["downtime"],
  98             data["bandwidth"],
  99             data["max_iters"],
 100             data["max_time"],
 101             data["pause"],
 102             data["pause_iters"],
 103             data["post_copy"],
 104             data["post_copy_iters"],
 105             data["auto_converge"],
 106             data["auto_converge_step"],
 107             data["compression_mt"],
 108             data["compression_mt_threads"],
 109             data["compression_xbzrle"],
 110             data["compression_xbzrle_cache"],
 111             data["multifd"],
 112             data["multifd_channels"])