ClickHouse/docker/test/performance-comparison/perf.py
2020-07-03 10:09:20 +03:00

261 lines
11 KiB
Python
Executable File

#!/usr/bin/python3
import os
import sys
import itertools
import clickhouse_driver
import xml.etree.ElementTree as et
import argparse
import pprint
import re
import string
import time
import traceback
def tsv_escape(s):
return s.replace('\\', '\\\\').replace('\t', '\\t').replace('\n', '\\n').replace('\r','')
parser = argparse.ArgumentParser(description='Run performance test.')
# Explicitly decode files as UTF-8 because sometimes we have Russian characters in queries, and LANG=C is set.
parser.add_argument('file', metavar='FILE', type=argparse.FileType('r', encoding='utf-8'), nargs=1, help='test description file')
parser.add_argument('--host', nargs='*', default=['localhost'], help="Server hostname(s). Corresponds to '--port' options.")
parser.add_argument('--port', nargs='*', default=[9000], help="Server port(s). Corresponds to '--host' options.")
parser.add_argument('--runs', type=int, default=int(os.environ.get('CHPC_RUNS', 13)), help='Number of query runs per server. Defaults to CHPC_RUNS environment variable.')
parser.add_argument('--long', action='store_true', help='Do not skip the tests tagged as long.')
parser.add_argument('--print-queries', action='store_true', help='Print test queries and exit.')
parser.add_argument('--print-settings', action='store_true', help='Print test settings and exit.')
args = parser.parse_args()
test_name = os.path.splitext(os.path.basename(args.file[0].name))[0]
tree = et.parse(args.file[0])
root = tree.getroot()
# Process query parameters
subst_elems = root.findall('substitutions/substitution')
available_parameters = {} # { 'table': ['hits_10m', 'hits_100m'], ... }
for e in subst_elems:
available_parameters[e.find('name').text] = [v.text for v in e.findall('values/value')]
# Takes parallel lists of templates, substitutes them with all combos of
# parameters. The set of parameters is determined based on the first list.
# Note: keep the order of queries -- sometimes we have DROP IF EXISTS
# followed by CREATE in create queries section, so the order matters.
def substitute_parameters(query_templates, other_templates = []):
query_results = []
other_results = [[]] * (len(other_templates))
for i, q in enumerate(query_templates):
keys = set(n for _, n, _, _ in string.Formatter().parse(q) if n)
values = [available_parameters[k] for k in keys]
combos = itertools.product(*values)
for c in combos:
with_keys = dict(zip(keys, c))
query_results.append(q.format(**with_keys))
for j, t in enumerate(other_templates):
other_results[j].append(t[i].format(**with_keys))
if len(other_templates):
return query_results, other_results
else:
return query_results
# Build a list of test queries, substituting parameters to query templates,
# and reporting the queries marked as short.
test_queries = []
for e in root.findall('query'):
new_queries = []
if 'short' in e.attrib:
new_queries, [is_short] = substitute_parameters([e.text], [[e.attrib['short']]])
for i, s in enumerate(is_short):
# Don't print this if we only need to print the queries.
if eval(s) and not args.print_queries:
print(f'short\t{i + len(test_queries)}')
else:
new_queries = substitute_parameters([e.text])
test_queries += new_queries
# If we're only asked to print the queries, do that and exit
if args.print_queries:
for q in test_queries:
print(q)
exit(0)
# If we're only asked to print the settings, do that and exit. These are settings
# for clickhouse-benchmark, so we print them as command line arguments, e.g.
# '--max_memory_usage=10000000'.
if args.print_settings:
for s in root.findall('settings/*'):
print(f'--{s.tag}={s.text}')
exit(0)
# Skip long tests
if not args.long:
for tag in root.findall('.//tag'):
if tag.text == 'long':
print('skipped\tTest is tagged as long.')
sys.exit(0)
# Check main metric to detect infinite tests. We shouldn't have such tests anymore,
# but we did in the past, and it is convenient to be able to process old tests.
main_metric_element = root.find('main_metric/*')
if main_metric_element is not None and main_metric_element.tag != 'min_time':
raise Exception('Only the min_time main metric is supported. This test uses \'{}\''.format(main_metric_element.tag))
# Another way to detect infinite tests. They should have an appropriate main_metric
# but sometimes they don't.
infinite_sign = root.find('.//average_speed_not_changing_for_ms')
if infinite_sign is not None:
raise Exception('Looks like the test is infinite (sign 1)')
# Print report threshold for the test if it is set.
if 'max_ignored_relative_change' in root.attrib:
print(f'report-threshold\t{root.attrib["max_ignored_relative_change"]}')
# Open connections
servers = [{'host': host, 'port': port} for (host, port) in zip(args.host, args.port)]
connections = [clickhouse_driver.Client(**server) for server in servers]
for s in servers:
print('server\t{}\t{}'.format(s['host'], s['port']))
# Run drop queries, ignoring errors. Do this before all other activity, because
# clickhouse_driver disconnects on error (this is not configurable), and the new
# connection loses the changes in settings.
drop_query_templates = [q.text for q in root.findall('drop_query')]
drop_queries = substitute_parameters(drop_query_templates)
for conn_index, c in enumerate(connections):
for q in drop_queries:
try:
c.execute(q)
print(f'drop\t{conn_index}\t{c.last_query.elapsed}\t{tsv_escape(q)}')
except:
pass
# Apply settings.
# If there are errors, report them and continue -- maybe a new test uses a setting
# that is not in master, but the queries can still run. If we have multiple
# settings and one of them throws an exception, all previous settings for this
# connection will be reset, because the driver reconnects on error (not
# configurable). So the end result is uncertain, but hopefully we'll be able to
# run at least some queries.
settings = root.findall('settings/*')
for conn_index, c in enumerate(connections):
for s in settings:
try:
q = f"set {s.tag} = '{s.text}'"
c.execute(q)
print(f'set\t{conn_index}\t{c.last_query.elapsed}\t{tsv_escape(q)}')
except:
print(traceback.format_exc(), file=sys.stderr)
# Check tables that should exist. If they don't exist, just skip this test.
tables = [e.text for e in root.findall('preconditions/table_exists')]
for t in tables:
for c in connections:
try:
res = c.execute("select 1 from {} limit 1".format(t))
except:
exception_message = traceback.format_exception_only(*sys.exc_info()[:2])[-1]
skipped_message = ' '.join(exception_message.split('\n')[:2])
print(f'skipped\t{tsv_escape(skipped_message)}')
sys.exit(0)
# Run create queries
create_query_templates = [q.text for q in root.findall('create_query')]
create_queries = substitute_parameters(create_query_templates)
# Disallow temporary tables, because the clickhouse_driver reconnects on errors,
# and temporary tables are destroyed. We want to be able to continue after some
# errors.
for q in create_queries:
if re.search('create temporary table', q, flags=re.IGNORECASE):
print(f"Temporary tables are not allowed in performance tests: '{q}'",
file = sys.stderr)
sys.exit(1)
for conn_index, c in enumerate(connections):
for q in create_queries:
c.execute(q)
print(f'create\t{conn_index}\t{c.last_query.elapsed}\t{tsv_escape(q)}')
# Run fill queries
fill_query_templates = [q.text for q in root.findall('fill_query')]
fill_queries = substitute_parameters(fill_query_templates)
for conn_index, c in enumerate(connections):
for q in fill_queries:
c.execute(q)
print(f'fill\t{conn_index}\t{c.last_query.elapsed}\t{tsv_escape(q)}')
# Run test queries.
for query_index, q in enumerate(test_queries):
query_prefix = f'{test_name}.query{query_index}'
# We have some crazy long queries (about 100kB), so trim them to a sane
# length. This means we can't use query text as an identifier and have to
# use the test name + the test-wide query index.
query_display_name = q
if len(query_display_name) > 1000:
query_display_name = f'{query_display_name[:1000]}...({query_index})'
print(f'display-name\t{query_index}\t{tsv_escape(query_display_name)}')
# Prewarm: run once on both servers. Helps to bring the data into memory,
# precompile the queries, etc.
# A query might not run on the old server if it uses a function added in the
# new one. We want to run them on the new server only, so that the PR author
# can ensure that the test works properly. Remember the errors we had on
# each server.
query_error_on_connection = [None] * len(connections);
for conn_index, c in enumerate(connections):
try:
prewarm_id = f'{query_prefix}.prewarm0'
res = c.execute(q, query_id = prewarm_id)
print(f'prewarm\t{query_index}\t{prewarm_id}\t{conn_index}\t{c.last_query.elapsed}')
except KeyboardInterrupt:
raise
except:
# FIXME the driver reconnects on error and we lose settings, so this
# might lead to further errors or unexpected behavior.
query_error_on_connection[conn_index] = traceback.format_exc();
continue
# If prewarm fails for the query on both servers -- report the error, skip
# the query and continue testing the next query.
if query_error_on_connection.count(None) == 0:
print(query_error_on_connection[0], file = sys.stderr)
continue
# If prewarm fails on one of the servers, run the query on the rest of them.
# Useful for queries that use new functions added in the new server version.
if query_error_on_connection.count(None) < len(query_error_on_connection):
no_error = [i for i, e in enumerate(query_error_on_connection) if not e]
print(f'partial\t{query_index}\t{no_error}')
# Now, perform measured runs.
# Track the time spent by the client to process this query, so that we can
# notice the queries that take long to process on the client side, e.g. by
# sending excessive data.
start_seconds = time.perf_counter()
server_seconds = 0
for run in range(0, args.runs):
run_id = f'{query_prefix}.run{run}'
for conn_index, c in enumerate(connections):
if query_error_on_connection[conn_index]:
continue
res = c.execute(q, query_id = run_id)
print(f'query\t{query_index}\t{run_id}\t{conn_index}\t{c.last_query.elapsed}')
server_seconds += c.last_query.elapsed
client_seconds = time.perf_counter() - start_seconds
print(f'client-time\t{query_index}\t{client_seconds}\t{server_seconds}')
# Run drop queries
drop_queries = substitute_parameters(drop_query_templates)
for conn_index, c in enumerate(connections):
for q in drop_queries:
c.execute(q)
print(f'drop\t{conn_index}\t{c.last_query.elapsed}\t{tsv_escape(q)}')