Details
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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 10.8.1
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Component/s: Storage Engine - InnoDB
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Labels:None
Description
The InnoDB monitor counter log_sys.n_log_ios was almost removed in MDEV-14425. This counter was rather meaningless already since MDEV-21534 introduced a redo log group commit mechanism, and on the persistent memory interface there are no file system calls that could be counted. With MDEV-14425, the only case when the counter is updated is when the log file is being read during crash recovery.
Some related InnoDB monitor output in log_print() as well as the information_schema.innodb_metrics counter log_num_log_io are best removed.
Attachments
Issue Links
- relates to
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MDEV-14425 Change the InnoDB redo log format to reduce write amplification
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- Closed
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MDEV-21534 improve locking/waiting in log_write_up_to
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- Closed
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