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simplebench/bench-backup: add target-cache argument

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Allow benchmark with different kinds of target cache.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-01-28 13:28:17 +03:00
parent af2ac8514f
commit 684d18efd1
2 changed files with 33 additions and 10 deletions
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23
scripts/simplebench/bench-backup.py
View File

@ -65,13 +65,26 @@ def bench(args):
test_cases.append({'id': t, 'source': source, 'target': nbd_drv})
continue
if args.target_cache == 'both':
target_caches = ['direct', 'cached']
else:
target_caches = [args.target_cache]
for c in target_caches:
o_direct = c == 'direct'
fname = dirs[dst] + '/test-target'
if args.compressed:
fname += '.qcow2'
target = drv_file(fname)
target = drv_file(fname, o_direct=o_direct)
if args.compressed:
target = drv_qcow2(target)
test_cases.append({'id': t, 'source': source, 'target': target})
test_id = t
if args.target_cache == 'both':
test_id += f'({c})'
test_cases.append({'id': test_id, 'source': source,
'target': target})
binaries = [] # list of (<label>, <path>, [<options>])
for i, q in enumerate(args.env):
@ -186,5 +199,11 @@ Tests, in form source-dir-label:target-dir-label''',
Use compressed backup. It automatically means
automatically creating qcow2 target with
lazy_refcounts for each test run''', action='store_true')
p.add_argument('--target-cache', help='''\
Setup cache for target nodes. Options:
direct: default, use O_DIRECT and aio=native
cached: use system cache (Qemu default) and aio=threads (Qemu default)
both: generate two test cases for each src:dst pair''',
default='direct', choices=('direct', 'cached', 'both'))
bench(p.parse_args())

10
scripts/simplebench/bench_block_job.py
View File

@ -115,9 +115,13 @@ def bench_block_copy(qemu_binary, cmd, cmd_options, source, target):
'-blockdev', json.dumps(target)])
def drv_file(filename):
return {'driver': 'file', 'filename': filename,
'cache': {'direct': True}, 'aio': 'native'}
def drv_file(filename, o_direct=True):
node = {'driver': 'file', 'filename': filename}
if o_direct:
node['cache'] = {'direct': True}
node['aio'] = 'native'
return node
def drv_nbd(host, port):