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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: WT12.0.0, 8.3.0-rc0
Affects Version/s: None
Component/s: Cache and Eviction, Statistics
Labels:
None

Assigned Teams:

Storage Engines, Storage Engines - Transactions
Sprint:
SE Transactions - 2025-10-24
Story Points:
5

We need to investigate why the update cache fill ratio threshold is being hit even when eviction is actively working. This causes application threads to be pulled into eviction, leading to increased latency based on our observations in WT-15538.

To diagnose this, we want to split the existing "maximum page size seen at eviction" statistic into three separate metrics:

- clean max page size at eviction
- dirty max page size at eviction
- update max page size at eviction

is related to

WT-15432 Coverity analysis defect 176691: Invalid type in argument to printf format specifier

Closed

WT-15697 Change all python layered tests to use a configurable PALI

Closed

WT-15538 Investigate slow eviction behavior when updates ratio is high

Open

WT-15589 Verify each read we do is behind the page materialisation frontier

Open

WT-15718 Favour internal SQLite3 library during build

Closed

WT-15734 Consider removing the layered manager thread

Closed

WT-15758 Retry forever on read failures in disagg block manager

Closed

related to

WT-15560 Assertion fail - test/format with precise checkpoint

Closed

WT-15678 Memory leak in __wti_block_disagg_write_internal

Closed

WT-15246 Re-enable prepared testing that depends on new delta data format

Closed

WT-15522 Configure the error log from cmake & determine the default value

Closed

WT-15720 Handle stepdowns in test/format by restarting WT before stepping down

Closed

WT-15629 (disagg.mode=leader) Test/format key OOO (internal page delta)

Closed

WT-15682 Increase the read timestamp lag to avoid conflict with prepare timestamp

Closed

(2 is related to, 7 related to)

Assignee:: Alana Huang
Reporter:: Alana Huang
Votes:: 0 Vote for this issue
Watchers:: 1 Start watching this issue

Created:: Oct 10 2025 02:21:06 AM UTC
Updated:: Oct 16 2025 02:41:29 AM UTC
Resolved:: Oct 15 2025 06:04:38 AM UTC

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