rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-05-28 02:20:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

storcon: change default stripe size to 16 MB (#11168)

Browse Source 
## Problem

The current stripe size of 256 MB is a bit large, and can cause load
imbalances across shards. A stripe size of 16 MB appears more reasonable
to avoid hotspots, although we don't see evidence of this in benchmarks.

Resolves https://github.com/neondatabase/cloud/issues/25634.
Touches https://github.com/neondatabase/cloud/issues/21870.

## Summary of changes

* Change the default stripe size to 16 MB.
* Remove `ShardParameters::DEFAULT_STRIPE_SIZE`, and only use
`pageserver_api::shard::DEFAULT_STRIPE_SIZE`.
* Update a bunch of tests that assumed a certain stripe size.
This commit is contained in:
Erik Grinaker
2025-04-09 10:41:38 +02:00
committed by GitHub
parent cf62017a5b
commit a6ff8ec3d4
9 changed files with 98 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
test_runner/regress/test_storage_controller.py
View File

@@ -677,7 +677,7 @@ def test_storage_controller_compute_hook(
env.storage_controller.tenant_shard_split(env.initial_tenant, shard_count=2)
expect = {
"tenant_id": str(env.initial_tenant),
"stripe_size": 32768,
"stripe_size": 2048,
"shards": [
{"node_id": int(env.pageservers[1].id), "shard_number": 0},
{"node_id": int(env.pageservers[1].id), "shard_number": 1},