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

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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

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

People

Assignee:: Unassigned

Reporter:: Sergey Vojtovich

Votes:: 0 Vote for this issue

Watchers:: 7 Start watching this issue

Dates

Created:: 2019-06-13 14:30

Updated:: Yesterday 07:41

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