jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1#!/usr/bin/env python3
2#
3# Benchmark example
4#
5# Copyright (c) 2019 Virtuozzo International GmbH.
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program. If not, see <http://www.gnu.org/licenses/>.
19#
20
21import simplebench
22from bench_block_job import bench_block_copy, drv_file, drv_nbd
23
24
25def bench_func(env, case):
26 """ Handle one "cell" of benchmarking table. """
27 return bench_block_copy(env['qemu_binary'], env['cmd'],
28 case['source'], case['target'])
29
30
31# You may set the following five variables to correct values, to turn this
32# example to real benchmark.
33ssd_source = '/path-to-raw-source-image-at-ssd'
34ssd_target = '/path-to-raw-target-image-at-ssd'
35hdd_target = '/path-to-raw-source-image-at-hdd'
36nbd_ip = 'nbd-ip-addr'
37nbd_port = 'nbd-port-number'
38
39# Test-cases are "rows" in benchmark resulting table, 'id' is a caption for
40# the row, other fields are handled by bench_func.
41test_cases = [
42 {
43 'id': 'ssd -> ssd',
44 'source': drv_file(ssd_source),
45 'target': drv_file(ssd_target)
46 },
47 {
48 'id': 'ssd -> hdd',
49 'source': drv_file(ssd_source),
50 'target': drv_file(hdd_target)
51 },
52 {
53 'id': 'ssd -> nbd',
54 'source': drv_file(ssd_source),
55 'target': drv_nbd(nbd_ip, nbd_port)
56 },
57]
58
59# Test-envs are "columns" in benchmark resulting table, 'id is a caption for
60# the column, other fields are handled by bench_func.
61test_envs = [
62 {
63 'id': 'backup-1',
64 'cmd': 'blockdev-backup',
65 'qemu_binary': '/path-to-qemu-binary-1'
66 },
67 {
68 'id': 'backup-2',
69 'cmd': 'blockdev-backup',
70 'qemu_binary': '/path-to-qemu-binary-2'
71 },
72 {
73 'id': 'mirror',
74 'cmd': 'blockdev-mirror',
75 'qemu_binary': '/path-to-qemu-binary-1'
76 }
77]
78
79result = simplebench.bench(bench_func, test_envs, test_cases, count=3)
80print(simplebench.ascii(result))