wip

test_runner/fixtures/pageserver/utils.py

@@ -54,23 +54,15 @@ def wait_for_upload(
     tenant: TenantId | TenantShardId,
     timeline: TimelineId,
     lsn: Lsn,
+    timeout=20,
 ):
-    """waits for local timeline upload up to specified lsn"""
+    """Waits for local timeline upload up to specified LSN"""
 
-    current_lsn = Lsn(0)
-    for i in range(20):
-        current_lsn = remote_consistent_lsn(pageserver_http, tenant, timeline)
-        if current_lsn >= lsn:
-            log.info("wait finished")
-            return
-        lr_lsn = last_record_lsn(pageserver_http, tenant, timeline)
-        log.info(
-            f"waiting for remote_consistent_lsn to reach {lsn}, now {current_lsn}, last_record_lsn={lr_lsn}, iteration {i + 1}"
-        )
-        time.sleep(1)
-    raise Exception(
-        f"timed out while waiting for {tenant}/{timeline} remote_consistent_lsn to reach {lsn}, was {current_lsn}"
-    )
+    def is_uploaded():
+        remote_lsn = remote_consistent_lsn(pageserver_http, tenant, timeline)
+        assert remote_lsn >= lsn, f"remote_consistent_lsn at {remote_lsn}"
+
+    wait_until(is_uploaded, name=f"upload to {lsn}", timeout=timeout)
 
 
 def _tenant_in_expected_state(tenant_info: dict[str, Any], expected_state: str):

test_runner/performance/test_ingest_insert_bulk.py

@@ -0,0 +1,137 @@
+from __future__ import annotations
+
+import random
+from concurrent.futures import ThreadPoolExecutor
+
+import pytest
+from fixtures.benchmark_fixture import MetricReport, NeonBenchmarker
+from fixtures.common_types import Lsn
+from fixtures.log_helper import log
+from fixtures.neon_fixtures import (
+    NeonEnvBuilder,
+    wait_for_last_flush_lsn,
+)
+from fixtures.pageserver.utils import (
+    wait_for_last_record_lsn,
+    wait_for_upload,
+    wait_for_upload_queue_empty,
+)
+from fixtures.remote_storage import s3_storage
+
+
+@pytest.mark.timeout(900)
+@pytest.mark.parametrize("size", [8, 64, 1024, 8192])
+@pytest.mark.parametrize("s3", [True, False], ids=["s3", "local"])
+@pytest.mark.parametrize("backpressure", [True, False], ids=["backpressure", "nobackpressure"])
+@pytest.mark.parametrize("fsync", [True, False], ids=["fsync", "nofsync"])
+def test_ingest_insert_bulk(
+    request: pytest.FixtureRequest,
+    neon_env_builder: NeonEnvBuilder,
+    zenbenchmark: NeonBenchmarker,
+    fsync: bool,
+    backpressure: bool,
+    s3: bool,
+    size: int,
+):
+    """
+    Benchmarks ingestion of 8 GB of sequential insert WAL with concurrent inserts.
+    """
+
+    CONCURRENCY = 1  # 1 is optimal without fsync or backpressure
+    VOLUME = 2 * 1024**3
+    rows = VOLUME // (size + 64)  # +64 roughly accounts for per-row WAL overhead
+
+    neon_env_builder.safekeepers_enable_fsync = fsync
+
+    if s3:
+        neon_env_builder.enable_pageserver_remote_storage(s3_storage())
+        neon_env_builder.enable_safekeeper_remote_storage(s3_storage())
+
+    env = neon_env_builder.init_start()
+
+    endpoint = env.endpoints.create_start(
+        "main",
+        config_lines=[
+            f"fsync = {fsync}",
+            "max_replication_apply_lag = 0",
+            f"max_replication_flush_lag = {'10GB' if backpressure else '0'}",
+            # NB: neon_local defaults to 15MB, which is too slow -- production uses 500MB.
+            f"max_replication_write_lag = {'500MB' if backpressure else '0'}",
+        ],
+    )
+    endpoint.safe_psql("create extension neon")
+
+    # Wait for the timeline to be propagated to the pageserver.
+    wait_for_last_flush_lsn(env, endpoint, env.initial_tenant, env.initial_timeline)
+
+    # Ingest rows.
+    log.info("Ingesting data")
+    start_lsn = Lsn(endpoint.safe_psql("select pg_current_wal_lsn()")[0][0])
+
+    def insert_rows(endpoint, table, count, value):
+        with endpoint.connect().cursor() as cur:
+            cur.execute("set statement_timeout = 0")
+            cur.execute(f"create table {table} (id int, data bytea)")
+            cur.execute(f"insert into {table} values (generate_series(1, {count}), %s)", (value,))
+
+    with zenbenchmark.record_duration("upload"):
+        with zenbenchmark.record_duration("ingest"):
+            with ThreadPoolExecutor(max_workers=CONCURRENCY) as pool:
+                for i in range(CONCURRENCY):
+                    # Write a random value for all rows. This is sufficient to prevent compression,
+                    # e.g. in TOAST. Randomly generating every row is too slow.
+                    value = random.randbytes(size)
+                    worker_rows = rows / CONCURRENCY
+                    pool.submit(insert_rows, endpoint, f"table{i}", worker_rows, value)
+
+        end_lsn = Lsn(endpoint.safe_psql("select pg_current_wal_lsn()")[0][0])
+
+        # Wait for pageserver to ingest the WAL.
+        client = env.pageserver.http_client()
+        wait_for_last_record_lsn(client, env.initial_tenant, env.initial_timeline, end_lsn)
+
+        # Wait for pageserver S3 upload. Checkpoint to flush the last in-memory layer.
+        client.timeline_checkpoint(
+            env.initial_tenant,
+            env.initial_timeline,
+            compact=False,
+            wait_until_flushed=False,
+        )
+        wait_for_upload(client, env.initial_tenant, env.initial_timeline, end_lsn, timeout=600)
+
+    # Empty out upload queue for next benchmark.
+    wait_for_upload_queue_empty(client, env.initial_tenant, env.initial_timeline)
+
+    backpressure_time = endpoint.safe_psql("select backpressure_throttling_time()")[0][0]
+
+    # Now that all data is ingested, delete and recreate the tenant in the pageserver. This will
+    # reingest all the WAL directly from the safekeeper. This gives us a baseline of how fast the
+    # pageserver can ingest this WAL in isolation.
+    status = env.storage_controller.inspect(tenant_shard_id=env.initial_tenant)
+    assert status is not None
+
+    endpoint.stop()  # avoid spurious getpage errors
+    client.tenant_delete(env.initial_tenant)
+    env.pageserver.tenant_create(tenant_id=env.initial_tenant, generation=status[0])
+
+    with zenbenchmark.record_duration("recover"):
+        log.info("Recovering WAL into pageserver")
+        client.timeline_create(env.pg_version, env.initial_tenant, env.initial_timeline)
+        wait_for_last_record_lsn(client, env.initial_tenant, env.initial_timeline, end_lsn)
+
+    # Emit metrics.
+    wal_written_mb = round((end_lsn - start_lsn) / (1024 * 1024))
+    zenbenchmark.record("wal_written", wal_written_mb, "MB", MetricReport.TEST_PARAM)
+    zenbenchmark.record("row_count", rows, "rows", MetricReport.TEST_PARAM)
+    zenbenchmark.record("concurrency", CONCURRENCY, "clients", MetricReport.TEST_PARAM)
+    zenbenchmark.record(
+        "backpressure_time", backpressure_time // 1000, "ms", MetricReport.LOWER_IS_BETTER
+    )
+
+    props = {p["name"]: p["value"] for _, p in request.node.user_properties}
+    for name in ("ingest", "recover"):
+        throughput = int(wal_written_mb / props[name])
+        zenbenchmark.record(f"{name}_throughput", throughput, "MB/s", MetricReport.HIGHER_IS_BETTER)
+
+    # Pageserver shutdown will likely get stuck on the upload queue, just shut it down immediately.
+    env.stop(immediate=True)