5 # Basic performance testing using fio's sg ioengine
8 # sgunmap-perf.py char-device block-device fio-executable
11 # t/sgunmap-perf.py /dev/sg1 /dev/sdb ./fio
18 from __future__ import absolute_import
19 from __future__ import print_function
24 from six.moves import range
28 parser = argparse.ArgumentParser()
29 parser.add_argument('cdev',
30 help='character device target (e.g., /dev/sg0)')
31 parser.add_argument('bdev',
32 help='block device target (e.g., /dev/sda)')
33 parser.add_argument('fioc',
34 help='path to candidate fio executable (e.g., ./fio)')
35 parser.add_argument('fior',
36 help='path to reference fio executable (e.g., ./fio)')
37 args = parser.parse_args()
42 def fulldevice(fio, dev, ioengine='psync', rw='trim', bs='1M'):
43 parameters = ["--name=test",
44 "--output-format=json",
45 "--random_generator=lfsr",
46 "--bs={0}".format(bs),
47 "--rw={0}".format(rw),
48 "--ioengine={0}".format(ioengine),
49 "--filename={0}".format(dev)]
51 output = subprocess.check_output([fio] + parameters)
52 jsondata = json.loads(output)
53 jobdata = jsondata['jobs'][0]
57 def runtest(fio, dev, rw, qd, batch, bs='512', runtime='30s'):
58 parameters = ["--name=test",
59 "--random_generator=tausworthe64",
61 "--runtime={0}".format(runtime),
62 "--output-format=json",
64 "--blocksize={0}".format(bs),
65 "--rw={0}".format(rw),
66 "--filename={0}".format(dev),
67 "--iodepth={0}".format(qd),
68 "--iodepth_batch={0}".format(batch)]
70 output = subprocess.check_output([fio] + parameters)
71 jsondata = json.loads(output)
72 jobdata = jsondata['jobs'][0]
78 def runtests(fio, dev, qd, batch, rw, bs='512', trials=5):
80 for x in range(trials):
81 jd = runtest(fio, dev, rw, qd, batch, bs=bs)
82 total = jd['read']['iops'] + jd['write']['iops'] + jd['trim']['iops']
85 return iops, (sum(iops) / trials)
87 if __name__ == '__main__':
90 print("Trimming full device {0}".format(args.cdev))
91 fulldevice(args.fior, args.cdev, ioengine='sg')
93 print("Running rand read tests on {0}"
94 " with fio candidate build {1}".format(args.cdev, args.fioc))
95 randread, rrmean = runtests(args.fioc, args.cdev, 16, 1, 'randread',
97 print("IOPS mean {0}, trials {1}".format(rrmean, randread))
99 print("Running rand read tests on {0}"
100 " with fio reference build {1}".format(args.cdev, args.fior))
101 randread, rrmean = runtests(args.fior, args.cdev, 16, 1, 'randread',
103 print("IOPS mean {0}, trials {1}".format(rrmean, randread))
105 print("Running rand write tests on {0}"
106 " with fio candidate build {1}".format(args.cdev, args.fioc))
107 randwrite, rwmean = runtests(args.fioc, args.cdev, 16, 1, 'randwrite',
109 print("IOPS mean {0}, trials {1}".format(rwmean, randwrite))
111 print("Running rand write tests on {0}"
112 " with fio reference build {1}".format(args.cdev, args.fior))
113 randwrite, rwmean = runtests(args.fior, args.cdev, 16, 1, 'randwrite',
115 print("IOPS mean {0}, trials {1}".format(rwmean, randwrite))