Struct MDBX_commit_latency

Latency of commit stages in 1/65536 of seconds units. More...

#include <mdbx.h>

Public Attributes

Type	Name
uint32_t	audit Duration of internal audit if enabled.
uint32_t	ending Duration of transaction ending (releasing resources).
uint32_t	gc_cputime User-mode CPU time spent on GC update.
struct MDBX_commit_latency::@274360015122246141051153005256146146260262100061	gc_prof Information for GC profiling.
uint32_t	gc_wallclock Duration of GC update by wall clock.
uint32_t	preparation Duration of preparation (commit child transactions, update table's records and cursors destroying).
uint32_t	sync Duration of syncing written data to the disk/storage, i.e. the duration of a `fdatasync()` or a`msync()` syscall during commit.
uint32_t	whole The total duration of a commit.
uint32_t	write Duration of writing dirty/modified data pages to a filesystem, i.e. the summary duration of a `write()` syscalls during commit.

Detailed Description

Warning:

This structure may be changed in future releases.

See also: mdbx_txn_commit_ex()

Public Attributes Documentation

variable audit

Duration of internal audit if enabled.

uint32_t MDBX_commit_latency::audit;

variable ending

Duration of transaction ending (releasing resources).

uint32_t MDBX_commit_latency::ending;

variable gc_cputime

User-mode CPU time spent on GC update.

uint32_t MDBX_commit_latency::gc_cputime;

variable gc_prof

Information for GC profiling.

struct MDBX_commit_latency::@274360015122246141051153005256146146260262100061 MDBX_commit_latency::gc_prof;

Note:

This data is shared for all processes working with a given database and stored in LCK-file.

Statistic is accumulated when all transactions are committed, but only in libmdbx builds with the MDBX_ENABLE_PROFGC option enabled. The collected statistics are returned to any process when using mdbx_txn_commit_ex() or mdbx_txn_checkpoint(), and at the same time they are reset to zero when top-level transactions (not nested) are committed.

variable gc_wallclock

Duration of GC update by wall clock.

uint32_t MDBX_commit_latency::gc_wallclock;

variable preparation

Duration of preparation (commit child transactions, update table's records and cursors destroying).

uint32_t MDBX_commit_latency::preparation;

variable sync

Duration of syncing written data to the disk/storage, i.e. the duration of a fdatasync() or amsync() syscall during commit.

uint32_t MDBX_commit_latency::sync;

variable whole

The total duration of a commit.

uint32_t MDBX_commit_latency::whole;

variable write

Duration of writing dirty/modified data pages to a filesystem, i.e. the summary duration of a write() syscalls during commit.

uint32_t MDBX_commit_latency::write;

The documentation for this class was generated from the following file docs/mdbx.h