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Issues: pingcap/tidb

RFC: reorganize packages layout for this repository
#41241 opened Feb 9, 2023 by bb7133
Open 17
flaky test list
#41316 opened Feb 12, 2023 by hawkingrei
Open
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Issues list

PR#55306 may caused 8.1% performance regression in benchmarksql affects-7.1 affects-7.5 affects-8.1 affects-8.3 severity/major type/performance type/regression
#55426 opened Aug 15, 2024 by owlsome2501
@niubell
7
Compared with v7.5.1, v8.1.0 has a 7.3% performance regression in oltp_point_select on Kylin Linux affects-8.1 affects-8.2 severity/major type/bug The issue is confirmed as a bug. type/performance type/regression
#53404 opened May 20, 2024 by Yui-Song
@hawkingrei
3
There is a 7% performance regression in Taobench benchmark affects-8.0 affects-8.1 affects-8.2 may-affects-5.4 This bug maybe affects 5.4.x versions. may-affects-6.1 may-affects-6.5 may-affects-7.1 may-affects-7.5 severity/major type/bug The issue is confirmed as a bug. type/performance type/regression
#51852 opened Mar 18, 2024 by Yui-Song
@you06
10
IndexLookUp cost mismatches actual execution time compared with TableScan by clustered index affects-8.1 found/gs found by gs report/customer Customers have encountered this bug. sig/planner SIG: Planner type/enhancement The issue or PR belongs to an enhancement. type/performance type/regression
#49901 opened Dec 29, 2023 by pcqz
9
Performance jitter in 11D statements of Join Order Benchmark affects-7.6 affects-8.1 severity/major sig/execution SIG execution type/bug The issue is confirmed as a bug. type/performance type/regression
#49859 opened Dec 27, 2023 by Yui-Song
@xzhangxian1008
6
sessionctx: change @@tidb_enable_gogc_tuner default value to 0 needs-1-more-lgtm Indicates a PR needs 1 more LGTM. release-note Denotes a PR that will be considered when it comes time to generate release notes. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. type/performance
#49420 opened Dec 13, 2023 by tiancaiamao Loading…
2 of 13 tasks
8
planner: tidb_enable_new_only_full_group_by_check cause plan-cache hit ratio regression on sysbench affects-7.1 epic/plan-cache sig/planner SIG: Planner type/enhancement The issue or PR belongs to an enhancement. type/performance
#45519 opened Jul 24, 2023 by qw4990
@qw4990
Compared with v6.5.2, v7.1.0 has a 4.8% performance regression in bank workload affects-7.1 affects-7.5 affects-8.1 component/tikv severity/major type/bug The issue is confirmed as a bug. type/performance type/regression
#43454 opened Apr 27, 2023 by Yui-Song
3
Some select queries would be executed with a long time in the stage of backup-checksum type/performance type/question The issue belongs to a question.
#37391 opened Aug 25, 2022 by lwlei
2
tidb-server memory increase rapidly type/performance type/question The issue belongs to a question.
#32413 opened Feb 16, 2022 by isabst
1
use monotonic time directly instead of Go time in somewhere help wanted Denotes an issue that needs help from a contributor. Must meet "help wanted" guidelines. type/enhancement The issue or PR belongs to an enhancement. type/performance
#32121 opened Feb 7, 2022 by siddontang
@wangggong
6
Avoid double-copy buffer when responding MySQL packets help wanted Denotes an issue that needs help from a contributor. Must meet "help wanted" guidelines. type/enhancement The issue or PR belongs to an enhancement. type/performance
#32097 opened Feb 3, 2022 by siddontang
2
@mikechengwei
3
Column: make a big slice then divide into sub slices instead of making multi slices in newColumn help wanted Denotes an issue that needs help from a contributor. Must meet "help wanted" guidelines. type/enhancement The issue or PR belongs to an enhancement. type/performance
#32096 opened Feb 3, 2022 by siddontang
1
server,hack: use slice to avoid unnecessary string to slice conversation release-note-none Denotes a PR that doesn't merit a release note. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. status/LGT1 Indicates that a PR has LGTM 1. type/performance
#32074 opened Jan 30, 2022 by siddontang Loading…
1 of 12 tasks
1
5
use hack.Slice in ColumnInfo:Dump to avoid unnecessary string to slice conversation help wanted Denotes an issue that needs help from a contributor. Must meet "help wanted" guidelines. type/enhancement The issue or PR belongs to an enhancement. type/performance
#32073 opened Jan 30, 2022 by siddontang
2
@sourcelliu
3
performance regression using dumpling to dump tidb component/charset component/dumpling This is related to Dumpling of TiDB. type/enhancement The issue or PR belongs to an enhancement. type/performance
#31709 opened Jan 14, 2022 by tiancaiamao
Prewrite and Commit take a long time type/performance type/question The issue belongs to a question.
#29743 opened Nov 13, 2021 by ocbsearcher
Chunk size too big cause frequent context switch type/enhancement The issue or PR belongs to an enhancement. type/performance
#28339 opened Sep 26, 2021 by tiancaiamao
2
avoid duplicate generate sql digest & normalized sql for prepared stmt epic/plan-cache sig/planner SIG: Planner type/performance
#26329 opened Jul 19, 2021 by lysu
1
decorrelation does not support some scenarios sig/planner SIG: Planner type/enhancement The issue or PR belongs to an enhancement. type/performance
#21518 opened Dec 7, 2020 by rebelice
2
partition pruning not effective on date scenarios component/tablepartition This issue is related to Table Partition of TiDB. type/enhancement The issue or PR belongs to an enhancement. type/performance
#19941 opened Sep 10, 2020 by ghost
1
@Defined2014
8
INSERT IGNORE is too slow type/performance type/question The issue belongs to a question.
#19532 opened Aug 27, 2020 by SunRunAway
2
08-18 performance regression on a bench_upay_178 type/performance
#19346 opened Aug 21, 2020 by mahjonp
@wshwsh12
Support STORING columns INDEX feature/discussing This feature request is discussing among product managers type/feature-request Categorizes issue or PR as related to a new feature. type/performance
#18616 opened Jul 16, 2020 by zhangjinpeng87
6
Push down sort to Coprocessor for better performance challenge-program component/coprocessor sig/execution SIG execution type/enhancement The issue or PR belongs to an enhancement. type/performance
#18544 opened Jul 14, 2020 by SunRunAway
4
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