Log_files_stats Struct Reference

Runtime statistics related to redo log files management. More...

#include <log0types.h>

Public Member Functions
Log - files management.
void	update (const log_t &log)
	Tries to update stats. More...

Public Attributes
Log_clock_point	m_last_update_time {}
	Last time stats were updated (last successful call to. More...
lsn_t	m_lsn_consumption_per_1s {0}
	LSN difference by which result of log_files_oldest_needed_lsn() advanced during last second. More...
lsn_t	m_lsn_production_per_1s {0}
	LSN difference by which result of log_files_newest_needed_lsn() advanced during last second. More...
lsn_t	m_oldest_lsn_on_update {0}
	Oldest LSN returned by log_files_oldest_needed_lsn() during last successful call to. More...
lsn_t	m_newest_lsn_on_update {0}
	Newest LSN returned by log_files_newest_needed_lsn() during last successful call to. More...

Detailed Description

Runtime statistics related to redo log files management.

These stats are not persisted to disk.

Member Function Documentation

update()

void Log_files_stats::update

(

const log_t &

log

)

Tries to update stats.

Fails and skips updating if less than 1s elapsed since last successful update, else: updates the stats and succeeds.

Parameters

[in]

log

redo log

Member Data Documentation

m_last_update_time

Log_clock_point Log_files_stats::m_last_update_time {}

Last time stats were updated (last successful call to.

See also

update()).

m_lsn_consumption_per_1s

lsn_t Log_files_stats::m_lsn_consumption_per_1s {0}

LSN difference by which result of log_files_oldest_needed_lsn() advanced during last second.

This is basically average consumption speed. Updated by successful calls to

See also

update().

m_lsn_production_per_1s

lsn_t Log_files_stats::m_lsn_production_per_1s {0}

LSN difference by which result of log_files_newest_needed_lsn() advanced during last second.

This is basically average production speed. Updated by successful calls to

See also

update().

m_newest_lsn_on_update

lsn_t Log_files_stats::m_newest_lsn_on_update {0}

Newest LSN returned by log_files_newest_needed_lsn() during last successful call to.

See also

update().

m_oldest_lsn_on_update

lsn_t Log_files_stats::m_oldest_lsn_on_update {0}

Oldest LSN returned by log_files_oldest_needed_lsn() during last successful call to.

See also

update().

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The documentation for this struct was generated from the following files:

• storage/innobase/include/log0types.h
• storage/innobase/log/log0files_governor.cc