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bench: lower attach concurrency

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it has been observed that we get transaction serialization issues
otherwise.

evidence: https://neon-github-public-dev.s3.amazonaws.com/reports/main/10402057346/index.html#suites/c62b105f3a4f00dd6be4ad88810e0e02/7c03011d9dbd5ec4/
This commit is contained in:
Joonas Koivunen
2024-08-15 12:24:38 +00:00
parent 485d76ac62
commit b6a2c39a26
1 changed files with 1 additions and 1 deletions
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2
test_runner/fixtures/pageserver/many_tenants.py
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@@ -65,7 +65,7 @@ def single_timeline(
override_storage_controller_generation=True,
)
with concurrent.futures.ThreadPoolExecutor(max_workers=22) as executor:
with concurrent.futures.ThreadPoolExecutor(max_workers=1) as executor:
executor.map(attach, tenants)
# Benchmarks will start the pageserver explicitly themselves