[MDEV-19749] MDL scalability regression after backup locks - Jira

Details

Type: Bug
Status: Open (View Workflow)
Priority: Major
Resolution: Unresolved
Affects Version/s: 10.4(EOL), 10.5, 10.6, 10.7(EOL), 10.8(EOL), 10.9(EOL), 10.10(EOL)
Fix Version/s: 10.6
Component/s: Locking
Labels:
- performance
- regression-10.4

Sprint:
Server 12.1 dev sprint

Description

In 7a9dfdd GLOBAL and COMMIT namespaces were combined into BACKUP, which doubled load on BACKUP lock mutex.

Can be fixed by implementing something similar to MySQL WL#7306 "Improve MDL performance and scalability by implementing lock-free lock acquisition for DML".

Attachments

Issue Links

is caused by

MDEV-5336 Implement BACKUP STAGE for safe external backups

Closed

relates to

MDEV-14992 BACKUP: in-server backup

Open

Activity

No workflow transitions have been executed yet.

People

Assignee:: Marko Mäkelä

Reporter:: Sergey Vojtovich

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Dates

Created:: 2019-06-13 14:30

Updated:: 4 days ago 12:12

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