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MXS-1549: Count RO and RW transactions in readwritesplit

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Readwritesplit now keeps track of how many read-only and read-write
transactions have been executed. This allows a coarse estimation of how
widely read-only transactions are done even without explicit read-only
transactions being used (i.e. START TRANSACTION READ ONLY).
This commit is contained in:
Markus Mäkelä
2018-06-23 09:52:30 +03:00
parent b59f607471
commit e610b285b9
3 changed files with 21 additions and 18 deletions
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26
server/modules/routing/readwritesplit/readwritesplit.hh
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@ -203,24 +203,14 @@ struct Config
*/
struct Stats
{
public:
Stats():
n_sessions(0),
n_queries(0),
n_master(0),
n_slave(0),
n_all(0),
n_trx_replay(0)
{
}
uint64_t n_sessions; /**< Number sessions created */
uint64_t n_queries; /**< Number of queries forwarded */
uint64_t n_master; /**< Number of stmts sent to master */
uint64_t n_slave; /**< Number of stmts sent to slave */
uint64_t n_all; /**< Number of stmts sent to all */
uint64_t n_trx_replay; /**< Number of replayed transactions */
uint64_t n_sessions = 0; /**< Number sessions created */
uint64_t n_queries = 0; /**< Number of queries forwarded */
uint64_t n_master = 0; /**< Number of stmts sent to master */
uint64_t n_slave = 0; /**< Number of stmts sent to slave */
uint64_t n_all = 0; /**< Number of stmts sent to all */
uint64_t n_trx_replay = 0; /**< Number of replayed transactions */
uint64_t n_ro_trx = 0; /**< Read-only transaction count */
uint64_t n_rw_trx = 0; /**< Read-write transaction count */
};
class RWSplitSession;