aboutsummaryrefslogtreecommitdiff
path: root/scripts/simplebench
diff options
context:
space:
mode:
authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>2020-02-28 10:19:12 +0300
committerEduardo Habkost <ehabkost@redhat.com>2020-03-17 21:09:26 -0400
commit3e36da64b8c7520658926e65cdd499baa42f523a (patch)
tree4e957074f8936754adf6141dfad5da158de9078c /scripts/simplebench
parent7cc8e0a545cb096a136bc13a3344ca51260956ef (diff)
downloadqemu-3e36da64b8c7520658926e65cdd499baa42f523a.zip
qemu-3e36da64b8c7520658926e65cdd499baa42f523a.tar.gz
qemu-3e36da64b8c7520658926e65cdd499baa42f523a.tar.bz2
scripts/simplebench: add qemu/bench_block_job.py
Add block-job benchmarking helper functions. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <20200228071914.11746-3-vsementsov@virtuozzo.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'scripts/simplebench')
-rwxr-xr-xscripts/simplebench/bench_block_job.py119
1 files changed, 119 insertions, 0 deletions
diff --git a/scripts/simplebench/bench_block_job.py b/scripts/simplebench/bench_block_job.py
new file mode 100755
index 0000000..9808d69
--- /dev/null
+++ b/scripts/simplebench/bench_block_job.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python
+#
+# Benchmark block jobs
+#
+# Copyright (c) 2019 Virtuozzo International GmbH.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+import sys
+import os
+import socket
+import json
+
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
+from qemu.machine import QEMUMachine
+from qemu.qmp import QMPConnectError
+
+
+def bench_block_job(cmd, cmd_args, qemu_args):
+ """Benchmark block-job
+
+ cmd -- qmp command to run block-job (like blockdev-backup)
+ cmd_args -- dict of qmp command arguments
+ qemu_args -- list of Qemu command line arguments, including path to Qemu
+ binary
+
+ Returns {'seconds': int} on success and {'error': str} on failure, dict may
+ contain addional 'vm-log' field. Return value is compatible with
+ simplebench lib.
+ """
+
+ vm = QEMUMachine(qemu_args[0], args=qemu_args[1:])
+
+ try:
+ vm.launch()
+ except OSError as e:
+ return {'error': 'popen failed: ' + str(e)}
+ except (QMPConnectError, socket.timeout):
+ return {'error': 'qemu failed: ' + str(vm.get_log())}
+
+ try:
+ res = vm.qmp(cmd, **cmd_args)
+ if res != {'return': {}}:
+ vm.shutdown()
+ return {'error': '"{}" command failed: {}'.format(cmd, str(res))}
+
+ e = vm.event_wait('JOB_STATUS_CHANGE')
+ assert e['data']['status'] == 'created'
+ start_ms = e['timestamp']['seconds'] * 1000000 + \
+ e['timestamp']['microseconds']
+
+ e = vm.events_wait((('BLOCK_JOB_READY', None),
+ ('BLOCK_JOB_COMPLETED', None),
+ ('BLOCK_JOB_FAILED', None)), timeout=True)
+ if e['event'] not in ('BLOCK_JOB_READY', 'BLOCK_JOB_COMPLETED'):
+ vm.shutdown()
+ return {'error': 'block-job failed: ' + str(e),
+ 'vm-log': vm.get_log()}
+ end_ms = e['timestamp']['seconds'] * 1000000 + \
+ e['timestamp']['microseconds']
+ finally:
+ vm.shutdown()
+
+ return {'seconds': (end_ms - start_ms) / 1000000.0}
+
+
+# Bench backup or mirror
+def bench_block_copy(qemu_binary, cmd, source, target):
+ """Helper to run bench_block_job() for mirror or backup"""
+ assert cmd in ('blockdev-backup', 'blockdev-mirror')
+
+ source['node-name'] = 'source'
+ target['node-name'] = 'target'
+
+ return bench_block_job(cmd,
+ {'job-id': 'job0', 'device': 'source',
+ 'target': 'target', 'sync': 'full'},
+ [qemu_binary,
+ '-blockdev', json.dumps(source),
+ '-blockdev', json.dumps(target)])
+
+
+def drv_file(filename):
+ return {'driver': 'file', 'filename': filename,
+ 'cache': {'direct': True}, 'aio': 'native'}
+
+
+def drv_nbd(host, port):
+ return {'driver': 'nbd',
+ 'server': {'type': 'inet', 'host': host, 'port': port}}
+
+
+if __name__ == '__main__':
+ import sys
+
+ if len(sys.argv) < 4:
+ print('USAGE: {} <qmp block-job command name> '
+ '<json string of arguments for the command> '
+ '<qemu binary path and arguments>'.format(sys.argv[0]))
+ exit(1)
+
+ res = bench_block_job(sys.argv[1], json.loads(sys.argv[2]), sys.argv[3:])
+ if 'seconds' in res:
+ print('{:.2f}'.format(res['seconds']))
+ else:
+ print(res)