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4045 zfs write throttle & i/o scheduler performance work
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
@@ -18,11 +18,11 @@
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
#ifndef _SYS_SPA_IMPL_H
#define _SYS_SPA_IMPL_H
@@ -232,15 +232,26 @@
uint64_t spa_feat_for_write_obj; /* required to write to pool */
uint64_t spa_feat_for_read_obj; /* required to read from pool */
uint64_t spa_feat_desc_obj; /* Feature descriptions */
cyclic_id_t spa_deadman_cycid; /* cyclic id */
uint64_t spa_deadman_calls; /* number of deadman calls */
- uint64_t spa_sync_starttime; /* starting time fo spa_sync */
+ hrtime_t spa_sync_starttime; /* starting time fo spa_sync */
uint64_t spa_deadman_synctime; /* deadman expiration timer */
- kmutex_t spa_iokstat_lock; /* protects spa_iokstat_* */
+
+ /*
+ * spa_iokstat_lock protects spa_iokstat and
+ * spa_queue_stats[].
+ */
+ kmutex_t spa_iokstat_lock;
struct kstat *spa_iokstat; /* kstat of io to this pool */
+ struct {
+ int spa_active;
+ int spa_queued;
+ } spa_queue_stats[ZIO_PRIORITY_NUM_QUEUEABLE];
+
hrtime_t spa_ccw_fail_time; /* Conf cache write fail time */
+
/*
* spa_refcount & spa_config_lock must be the last elements
* because refcount_t changes size based on compilation options.
* In order for the MDB module to function correctly, the other
* fields must remain in the same location.