mirror of
https://github.com/neondatabase/neon.git
synced 2025-12-23 06:09:59 +00:00
5bd8e2363a
This will help to keep us from using deprecated Python features going forward. Signed-off-by: Tristan Partin <tristan@neon.tech>
84 lines
3.2 KiB
Python
84 lines
3.2 KiB
Python
from __future__ import annotations
|
|
|
|
from contextlib import closing
|
|
|
|
from fixtures.benchmark_fixture import MetricReport
|
|
from fixtures.common_types import Lsn
|
|
from fixtures.compare_fixtures import NeonCompare, PgCompare
|
|
from fixtures.log_helper import log
|
|
from fixtures.pg_version import PgVersion
|
|
|
|
|
|
#
|
|
# Run bulk INSERT test.
|
|
#
|
|
# Collects metrics:
|
|
#
|
|
# 1. Time to INSERT 5 million rows
|
|
# 2. Disk writes
|
|
# 3. Disk space used
|
|
# 4. Peak memory usage
|
|
#
|
|
def test_bulk_insert(neon_with_baseline: PgCompare):
|
|
env = neon_with_baseline
|
|
|
|
start_lsn = Lsn(env.pg.safe_psql("SELECT pg_current_wal_lsn()")[0][0])
|
|
|
|
with closing(env.pg.connect()) as conn:
|
|
with conn.cursor() as cur:
|
|
cur.execute("create table huge (i int, j int);")
|
|
|
|
# Run INSERT, recording the time and I/O it takes
|
|
with env.record_pageserver_writes("pageserver_writes"):
|
|
with env.record_duration("insert"):
|
|
cur.execute("insert into huge values (generate_series(1, 20000000), 0);")
|
|
env.flush(compact=False, gc=False)
|
|
|
|
env.report_peak_memory_use()
|
|
env.report_size()
|
|
|
|
# Report amount of wal written. Useful for comparing vanilla wal format vs
|
|
# neon wal format, measuring neon write amplification, etc.
|
|
end_lsn = Lsn(env.pg.safe_psql("SELECT pg_current_wal_lsn()")[0][0])
|
|
wal_written_bytes = end_lsn - start_lsn
|
|
wal_written_mb = round(wal_written_bytes / (1024 * 1024))
|
|
env.zenbenchmark.record("wal_written", wal_written_mb, "MB", MetricReport.TEST_PARAM)
|
|
|
|
# When testing neon, also check how long it takes the pageserver to reingest the
|
|
# wal from safekeepers. If this number is close to total runtime, then the pageserver
|
|
# is the bottleneck.
|
|
if isinstance(env, NeonCompare):
|
|
measure_recovery_time(env)
|
|
|
|
with env.record_duration("compaction"):
|
|
env.compact()
|
|
|
|
|
|
def measure_recovery_time(env: NeonCompare):
|
|
client = env.env.pageserver.http_client()
|
|
pg_version = PgVersion(client.timeline_detail(env.tenant, env.timeline)["pg_version"])
|
|
|
|
# Delete the Tenant in the pageserver: this will drop local and remote layers, such that
|
|
# when we "create" the Tenant again, we will replay the WAL from the beginning.
|
|
#
|
|
# This is a "weird" thing to do, and can confuse the storage controller as we're re-using
|
|
# the same tenant ID for a tenant that is logically different from the pageserver's point
|
|
# of view, but the same as far as the safekeeper/WAL is concerned. To work around that,
|
|
# we will explicitly create the tenant in the same generation that it was previously
|
|
# attached in.
|
|
attach_status = env.env.storage_controller.inspect(tenant_shard_id=env.tenant)
|
|
assert attach_status is not None
|
|
(attach_gen, _) = attach_status
|
|
|
|
client.tenant_delete(env.tenant)
|
|
env.env.pageserver.tenant_create(tenant_id=env.tenant, generation=attach_gen)
|
|
|
|
# Measure recovery time
|
|
with env.record_duration("wal_recovery"):
|
|
log.info("Entering recovery...")
|
|
client.timeline_create(pg_version, env.tenant, env.timeline)
|
|
|
|
# Flush, which will also wait for lsn to catch up
|
|
env.flush(compact=False, gc=False)
|
|
log.info("Finished recovery.")
|