Illumos #4045 write throttle & i/o scheduler performance work

[mirror_zfs.git] / include / sys / txg_impl.h

diff --git a/include/sys/txg_impl.h b/include/sys/txg_impl.h
index 8a0977f1f4dc02525c6787229c8d0679ff1cf22e..e583d61eac2f345010245944d87ae588a051c19a 100644 (file)
--- a/include/sys/txg_impl.h
+++ b/include/sys/txg_impl.h
@@ -18,6 +18,7 @@
  *
  * CDDL HEADER END
  */
+
 /*
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
@@ -89,11 +90,14 @@ struct tx_cpu {
 typedef struct tx_state {
        tx_cpu_t        *tx_cpu;        /* protects access to tx_open_txg */
        kmutex_t        tx_sync_lock;   /* protects the rest of this struct */
+
        uint64_t        tx_open_txg;    /* currently open txg id */
        uint64_t        tx_quiesced_txg; /* quiesced txg waiting for sync */
        uint64_t        tx_syncing_txg; /* currently syncing txg id */
        uint64_t        tx_synced_txg;  /* last synced txg id */
 
+       hrtime_t        tx_open_time;   /* start time of tx_open_txg */
+
        uint64_t        tx_sync_txg_waiting; /* txg we're waiting to sync */
        uint64_t        tx_quiesce_txg_waiting; /* txg we're waiting to open */