voldemort_client/load_voldy.py at master · jpellerin/voldemort_client · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
#!/usr/bin/env python

import voldemort_client as voldemort

from optparse import OptionParser
from threading import Thread
from Queue import Queue

import os
import shutil
import time
import random
import sha
import tempfile
import cPickle as pickle


def main():
    rq = Queue()
    options, junk = opts()
    workers = []
    host = options.host
    port = int(options.port)
    clients = int(options.clients)
    minsize = int(options.min_value)
    maxsize = int(options.max_value)
    sleep = int(options.sleep)
    verbose = options.verbose
    log = options.log

    for i in range(0, clients):
        t = Thread(target=run, args=(rq, host, port,
                                     sleep, minsize, maxsize))
        workers.append(t)
    for w in workers:
        w.setDaemon(True)
        w.start()

    stats = {'collisions': 0,
             'get': [],
             'put': []}
    while True:
        alive = False
        for w in workers:
            if w.isAlive():
                alive = True
                break
        if not alive:
            break

        r = rq.get()
        stats['collisions'] += r['collisions']
        stats['get'].extend(r['get'])
        stats['put'].extend(r['put'])
        g = stats['get'][:]
        g.sort()
        p = stats['put'][:]
        p.sort()
        gets = len(g)
        puts = len(p)
        if verbose:
            print "gets: %d puts: %d collisions: %d" \
                  % (gets, puts, stats['collisions'])
            print "get avg: %f0.3ms median: %f0.3ms 99.9: %f0.3ms" % (
                (sum(g) / float(gets)) * 1000,
                (g[gets/2]) * 1000,
                (g[int(gets * .999)-1]) * 1000)
            print "put avg: %f0.3ms median: %f0.3ms 99.9: %f0.3ms" % (
                (sum(p) / float(puts)) * 1000,
                (p[puts/2]) * 1000,
                (p[int(puts * .999)-1]) * 1000)
        if log:
            (fd, lf) = tempfile.mkstemp()
            fh = os.fdopen(fd, 'w')
            pickle.dump(stats, file=fh)
            fh.close()
            shutil.move(lf, log)


def run(rq, host, port, sleep, minsize, maxsize):
    vt = voldemort.Voldemort("tcp://%s:%s" % (host, port))
    client = vt.get_store('test')
    k = key()
    while True:
        s = {'collisions': 0,
             'get': [],
             'put': []}
        st = time.time()
        try:
            value, version = client.get(k)
        except voldemort.InconsistentDataError:
            s['collisions'] += 1
        taken = time.time() - st
        s['get'].append(taken)
        nval = rval(minsize, maxsize)
        st = time.time()
        try:
            client.put(k, nval, version)
        except (voldemort.InconsistentDataError,
                voldemort.ObsoleteVersionError):
            s['collisions'] += 1
        taken = time.time() - st
        s['put'].append(taken)
        rq.put(s)
        time.sleep(random.uniform(0, sleep))


def opts():
    parser = OptionParser()

    # FIXME num requests / time to run

    parser.add_option('--host', dest='host', default='localhost',
                      action='store', help='Connect to host')
    parser.add_option('-p', '--port', dest='port', default=6666,
                      action='store', help='Connect to port')
    parser.add_option('-s', '--sleep', dest='sleep', default='2',
                      action='store', help='Time to sleep between requests '
                      '(seconds)')
    parser.add_option('-c', '--concurrency', '--clients', default='1',
                      dest='clients', action='store',
                      help='Number of concurrent clients')
    parser.add_option('-m', '--min-value-size', default='1024',
                      dest='min_value', action='store',
                      help='Min length of each value')
    parser.add_option('-x', '--max-value-size', default='4096',
                      dest='max_value', action='store',
                      help='Max length of each value')
    parser.add_option('-l', '--log', default='load_stats.log',
                      dest='log', action='store',
                      help='Periodically log load stats to this file')
    parser.add_option('--verbose', default=False,
                      dest='verbose', action='store_true',
                      help='Print stats to stdout')

    return parser.parse_args()


def key():
    return sha.new(
        ''.join(random.sample('0123456789abcdefghijklmnop', 10))).hexdigest()


def rval(min, max):
    ch = random.choice
    size = random.randrange(min, max)
    b = []
    for i in range(0, size):
        b.append(ch("abcdefghijklmnopqrstuvwxyz0123456789"))
    return ''.join(b)


if __name__ == '__main__':
    main()