#!/usr/bin/env python

# Copyright (c) 2011 Stanford University

#

# Permission to use, copy, modify, and distribute this software for any

# purpose with or without fee is hereby granted, provided that the above

# copyright notice and this permission notice appear in all copies.

#

# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR(S) DISCLAIM ALL WARRANTIES

# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL AUTHORS BE LIABLE FOR

# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

"""Generates data for a recovery performance graph.

Measures recovery time as a function of partition size for a

single recovery Master and 3 different object sizes.

"""

from __future__ import division, print_function

from common import *

import config

import recovery

import subprocess

dat = open('%s/recovery/objectsize_scale.data' % top_path, 'w', 1)

numBackups = len(config.hosts)

for objectSize in [128, 256, 1024]:

print('# objectSize:', objectSize, file=dat)

print('# Data sourced by %d backups' % objectSize, file=dat)

for partitionSize in range(1, 1050, 100):

args = {}

args['num_servers'] = numBackups

args['backups_per_server'] = 1

args['num_partitions'] = 1

args['object_size'] = objectSize

args['replicas'] = 3

args['master_ram'] = 8000

numObjectsPerMb = 2**20 / (objectSize + 38)

args['num_objects'] = int(numObjectsPerMb * partitionSize)

print('Running with %d backups' % numBackups)

print('Running with objects of size %d for a %d MB partition' %

(objectSize, partitionSize))

r = recovery.insist(**args)

print('->', r['ns'] / 1e6, 'ms', '(run %s)' % r['run'])

print(partitionSize, r['ns'] / 1e6, file=dat)

print(file=dat)

print(file=dat)