From dba79fcbf2cc50be5caef84ae01657e884ac5d89 Mon Sep 17 00:00:00 2001 From: Brian Behlendorf Date: Mon, 22 Oct 2012 16:57:27 -0700 Subject: Add KSTAT_TYPE_TXG type Add a new kstat type for tracking useful statistics about a TXG. The new KSTAT_TYPE_TXG type can be used to tracks the following statistics per-txg. txg - Unique txg number state - State (O)pen/(Q)uiescing/(S)yncing/(C)ommitted birth; - Creation time nread - Bytes read nwritten; - Bytes written reads - IOPs read writes - IOPs write open_time; - Length in nanoseconds the txg was open quiesce_time - Length in nanoseconds the txg was quiescing sync_time; - Length in nanoseconds the txg was syncing Signed-off-by: Brian Behlendorf --- include/sys/kstat.h | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/sys/kstat.h b/include/sys/kstat.h index 45386d49a..06379f827 100644 --- a/include/sys/kstat.h +++ b/include/sys/kstat.h @@ -43,7 +43,8 @@ #define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */ #define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */ #define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */ -#define KSTAT_NUM_TYPES 5 +#define KSTAT_TYPE_TXG 5 /* txg sync; ks_ndata >= 1 */ +#define KSTAT_NUM_TYPES 6 #define KSTAT_DATA_CHAR 0 #define KSTAT_DATA_INT32 1 @@ -156,6 +157,26 @@ typedef struct kstat_timer { hrtime_t stop_time; /* previous event stop time */ } kstat_timer_t; +typedef enum kstat_txg_state { + TXG_STATE_OPEN = 1, + TXG_STATE_QUIESCING = 2, + TXG_STATE_SYNCING = 3, + TXG_STATE_COMMITTED = 4, +} kstat_txg_state_t; + +typedef struct kstat_txg { + u_longlong_t txg; /* txg id */ + kstat_txg_state_t state; /* txg state */ + hrtime_t birth; /* birth time stamp */ + u_longlong_t nread; /* number of bytes read */ + u_longlong_t nwritten; /* number of bytes written */ + uint_t reads; /* number of read operations */ + uint_t writes; /* number of write operations */ + hrtime_t open_time; /* open time */ + hrtime_t quiesce_time;/* quiesce time */ + hrtime_t sync_time; /* sync time */ +} kstat_txg_t; + int spl_kstat_init(void); void spl_kstat_fini(void); -- cgit v1.2.3