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Peter Bendel f51ed4a2c4 "disable" disk eviction in pagebench periodic benchmark (#12487) 
## Problem

https://github.com/neondatabase/neon/pull/12464 introduced new defaults
for pageserver disk based eviction which activated disk based eviction
for pagebench periodic pagebench.
This caused the testcase to fail.

## Summary of changes

Override the new defaults during testcase execution.

## Test run

https://github.com/neondatabase/neon/actions/runs/16120217757/job/45483869734

Test run was successful, so merging this now
2025-07-08 09:38:06 +00:00
..
interactive
Make Postgres 17 the default version (#11619)
2025-04-16 23:23:37 +00:00
pagebench
"disable" disk eviction in pagebench periodic benchmark (#12487)
2025-07-08 09:38:06 +00:00
__init__.py
Enable all pyupgrade checks in ruff
2024-10-08 14:32:26 -05:00
README.md
Make Postgres 17 the default version (#11619)
2025-04-16 23:23:37 +00:00
test_page_service_batching.py
benchmarking: extend test_page_service_batching.py to cover concurrent IO + batching under random reads (#10466)
2025-05-15 17:48:13 +00:00
util.py
tests/performance: reconcile until idle before benchmark (#11435)
2025-04-09 16:32:19 +00:00

README.md

How to reproduce benchmark results / run these benchmarks interactively.

  1. Get an EC2 instance with Instance Store. Use the same instance type as used for the benchmark run.
  2. Mount the Instance Store => neon.git/scripts/ps_ec2_setup_instance_store
  3. Use a pytest command line (see other READMEs further up in the pytest hierarchy).

For tests that take a long time to set up / consume a lot of storage space, we use the test suite's repo_dir snapshotting functionality (from_repo_dir). It supports mounting snapshots using overlayfs, which improves iteration time.

Here's a full command line.

RUST_BACKTRACE=1 NEON_ENV_BUILDER_USE_OVERLAYFS_FOR_SNAPSHOTS=1 DEFAULT_PG_VERSION=17 BUILD_TYPE=release \
    ./scripts/pytest test_runner/performance/pageserver/pagebench/test_pageserver_max_throughput_getpage_at_latest_lsn.py