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mdbx: add latency gathering for commit stages.

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Change-Id: If68ceb6e69e5e565ce9de0fd9a80424b6da280c5
This commit is contained in:
Leonid Yuriev
2020-10-15 19:23:14 +03:00
parent 7cf92b66cf
commit f73a8a8680
3 changed files with 81 additions and 10 deletions
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36
mdbx.h
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@@ -2921,6 +2921,38 @@ MDBX_NOTHROW_PURE_FUNCTION LIBMDBX_API int mdbx_txn_flags(const MDBX_txn *txn);
MDBX_NOTHROW_PURE_FUNCTION LIBMDBX_API uint64_t
mdbx_txn_id(const MDBX_txn *txn);
/** \brief Latency of commit stages in 1/65536 of seconds units.
* \warning This structure may be changed in future releases.
* \see mdbx_txn_commit_ex() */
struct MDBX_commit_latency {
/** \brief Duration of preparation (commit child transactions, update
* sub-databases records and cursors destroying). */
uint32_t preparation;
/** \brief Duration of GC/freeDB handling & updation. */
uint32_t gc;
/** \brief Duration of internal audit if enabled. */
uint32_t audit;
/** \brief Duration of writing dirty/modified data pages. */
uint32_t write;
/** \brief Duration of syncing written data to the dist/storage. */
uint32_t sync;
/** \brief Duration of transaction ending (releasing resources). */
uint32_t ending;
/** \brief The total duration of a commit. */
uint32_t whole;
};
#ifndef __cplusplus
/** \ingroup c_statinfo */
typedef struct MDBX_commit_latency MDBX_commit_latency;
#endif
/** \brief Commit all the operations of a transaction into the database and
* collect latency information.
* \see mdbx_txn_commit()
* \ingroup c_statinfo
* \warning This function may be changed in future releases. */
LIBMDBX_API int mdbx_txn_commit_ex(MDBX_txn *txn, MDBX_commit_latency *latency);
/** \brief Commit all the operations of a transaction into the database.
* \ingroup c_transactions
*
@@ -2958,7 +2990,9 @@ mdbx_txn_id(const MDBX_txn *txn);
* \retval MDBX_ENOSPC No more disk space.
* \retval MDBX_EIO A system-level I/O error occurred.
* \retval MDBX_ENOMEM Out of memory. */
LIBMDBX_API int mdbx_txn_commit(MDBX_txn *txn);
LIBMDBX_INLINE_API(int, mdbx_txn_commit, (MDBX_txn * txn)) {
return mdbx_txn_commit_ex(txn, NULL);
}
/** \brief Abandon all the operations of the transaction instead of saving them.
* \ingroup c_transactions