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pageserver: Introduce config to enable/disable eviction task (#12496)

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## Problem
We lost capability to explicitly disable the global eviction task (for
testing).

## Summary of changes
Add an `enabled` flag to `DiskUsageEvictionTaskConfig` to indicate
whether we should run the eviction job or not.
This commit is contained in:
Trung Dinh
2025-07-08 14:14:04 -07:00
committed by GitHub
parent 09ff22a4d4
commit 4dee2bfd82
5 changed files with 103 additions and 32 deletions
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18
test_runner/performance/pageserver/pagebench/test_pageserver_max_throughput_getpage_at_latest_lsn.py
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@@ -71,7 +71,13 @@ def test_pageserver_characterize_latencies_with_1_client_and_throughput_with_man
n_clients: int,
):
setup_and_run_pagebench_benchmark(
neon_env_builder, zenbenchmark, pg_bin, n_tenants, pgbench_scale, duration, n_clients
neon_env_builder,
zenbenchmark,
pg_bin,
n_tenants,
pgbench_scale,
duration,
n_clients,
)
@@ -86,7 +92,8 @@ def setup_and_run_pagebench_benchmark(
):
def record(metric, **kwargs):
zenbenchmark.record(
metric_name=f"pageserver_max_throughput_getpage_at_latest_lsn.{metric}", **kwargs
metric_name=f"pageserver_max_throughput_getpage_at_latest_lsn.{metric}",
**kwargs,
)
params: dict[str, tuple[Any, dict[str, Any]]] = {}
@@ -104,7 +111,7 @@ def setup_and_run_pagebench_benchmark(
# configure cache sizes like in prod
page_cache_size = 16384
max_file_descriptors = 500000
neon_env_builder.pageserver_config_override = f"page_cache_size={page_cache_size}; max_file_descriptors={max_file_descriptors}; disk_usage_based_eviction={{max_usage_pct=99, min_avail_bytes=0, period = '999y'}}"
neon_env_builder.pageserver_config_override = f"page_cache_size={page_cache_size}; max_file_descriptors={max_file_descriptors}; disk_usage_based_eviction={{enabled = false}}"
tracing_config = PageserverTracingConfig(
sampling_ratio=(0, 1000),
@@ -120,7 +127,10 @@ def setup_and_run_pagebench_benchmark(
page_cache_size * 8192,
{"unit": "byte"},
),
"pageserver_config_override.max_file_descriptors": (max_file_descriptors, {"unit": ""}),
"pageserver_config_override.max_file_descriptors": (
max_file_descriptors,
{"unit": ""},
),
"pageserver_config_override.sampling_ratio": (ratio, {"unit": ""}),
}
)