mirror of
https://github.com/neondatabase/neon.git
synced 2026-01-07 13:32:57 +00:00
c660926a06
Move it to a common function. In the passing, remove the obsolete check to exclude the 'wal' directory. The 'wal' directory is no more.
56 lines
2.1 KiB
Python
56 lines
2.1 KiB
Python
import os
|
|
from contextlib import closing
|
|
from fixtures.zenith_fixtures import PostgresFactory, ZenithPageserver
|
|
|
|
pytest_plugins = ("fixtures.zenith_fixtures", "fixtures.benchmark_fixture")
|
|
|
|
#
|
|
# Run a very short pgbench test.
|
|
#
|
|
# Collects three metrics:
|
|
#
|
|
# 1. Time to initialize the pgbench database (pgbench -s5 -i)
|
|
# 2. Time to run 5000 pgbench transactions
|
|
# 3. Disk space used
|
|
#
|
|
def test_pgbench(postgres: PostgresFactory, pageserver: ZenithPageserver, pg_bin, zenith_cli, zenbenchmark, repo_dir: str):
|
|
# Create a branch for us
|
|
zenith_cli.run(["branch", "test_pgbench_perf", "empty"])
|
|
|
|
pg = postgres.create_start('test_pgbench_perf')
|
|
print("postgres is running on 'test_pgbench_perf' branch")
|
|
|
|
# Open a connection directly to the page server that we'll use to force
|
|
# flushing the layers to disk
|
|
psconn = pageserver.connect();
|
|
pscur = psconn.cursor()
|
|
|
|
# Get the timeline ID of our branch. We need it for the 'do_gc' command
|
|
with closing(pg.connect()) as conn:
|
|
with conn.cursor() as cur:
|
|
cur.execute("SHOW zenith.zenith_timeline")
|
|
timeline = cur.fetchone()[0]
|
|
|
|
connstr = pg.connstr()
|
|
|
|
# Initialize pgbench database, recording the time and I/O it takes
|
|
with zenbenchmark.record_pageserver_writes(pageserver, 'pageserver_writes'):
|
|
with zenbenchmark.record_duration('init'):
|
|
pg_bin.run_capture(['pgbench', '-s5', '-i', connstr])
|
|
|
|
# Flush the layers from memory to disk. This is included in the reported
|
|
# time and I/O
|
|
pscur.execute(f"do_gc {pageserver.initial_tenant} {timeline} 0")
|
|
|
|
# Run pgbench for 5000 transactions
|
|
with zenbenchmark.record_duration('5000_xacts'):
|
|
pg_bin.run_capture(['pgbench', '-c1', '-t5000', connstr])
|
|
|
|
# Flush the layers to disk again. This is *not' included in the reported time,
|
|
# though.
|
|
pscur.execute(f"do_gc {pageserver.initial_tenant} {timeline} 0")
|
|
|
|
# Report disk space used by the repository
|
|
timeline_size = zenbenchmark.get_timeline_size(repo_dir, pageserver.initial_tenant, timeline)
|
|
zenbenchmark.record('size', timeline_size / (1024*1024), 'MB')
|