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Type: Bug
Resolution: Fixed
Priority: Major - P3
Fix Version/s: WT10.0.0, 4.4.0-rc6, 4.7.0
Affects Version/s: None
Component/s: None
Labels:
None

Epic Link:
SPM-1845
Sprint:
Storage - Ra 2020-05-18
Story Points:
5

WT-5754 introduced expensive global visibility check, __wt_txn_visible_all() of the values being read in __inmem_row_leaf(). This causes a regression in the following workloads:

workload	Regression with visibility check	Regression without visibility check
medium-btree.wtperf	20%	12%
evict-btree.wtperf	21%	13%

depends on

WT-6082 Skip writing txn-id to data store when not needed

Closed

is caused by

WT-5754 Ensure the value is globally visible before encode it into WT_ROW

Closed

is duplicated by

WT-6038 Address performance degradation introduced by row encoding visibility fix

Closed

related to

WT-6114 Investigate performance drop in WT simple operations

Closed

WT-6211 Review performance regression of global visibility checks in __inmem_row_leaf()

Closed

Assignee:: Haseeb Bokhari (Inactive)
Reporter:: Sulabh Mahajan
Votes:: 0 Vote for this issue
Watchers:: 6 Start watching this issue

Created:: May 07 2020 07:27:36 AM UTC
Updated:: Oct 29 2023 04:43:46 PM UTC
Resolved:: May 14 2020 03:12:37 AM UTC

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