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Illumos #3329, #3330, #3331, #3335

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3329 spa_sync() spends 10-20% of its time in spa_free_sync_cb()
3330 space_seg_t should have its own kmem_cache
3331 deferred frees should happen after sync_pass 1
3335 make SYNC_PASS_* constants tunable

Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matt Ahrens <matthew.ahrens@delphix.com>
Reviewed by: Christopher Siden <chris.siden@delphix.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Approved by: Eric Schrock <eric.schrock@delphix.com>

References:
  illumos/illumos-gate@01f55e48fb
  https://www.illumos.org/issues/3329
  https://www.illumos.org/issues/3330
  https://www.illumos.org/issues/3331
  https://www.illumos.org/issues/3335

Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
George Wilson
2013-05-06 10:14:52 -07:00
committed by Brian Behlendorf
parent 5853fe790d
commit 55d85d5a8c
9 changed files with 75 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/metaslab_impl.h
+4 -1
View File
@@ -21,7 +21,10 @@
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright (c) 2011 by Delphix. All rights reserved.
*/
/*
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
#ifndef _SYS_METASLAB_IMPL_H
include/sys/spa.h
+1 -7
View File
@@ -486,13 +486,7 @@ extern int spa_scan_stop(spa_t *spa);
extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
extern void spa_sync_allpools(void);
/*
* DEFERRED_FREE must be large enough that regular blocks are not
* deferred. XXX so can't we change it back to 1?
*/
#define SYNC_PASS_DEFERRED_FREE 2 /* defer frees after this pass */
#define SYNC_PASS_DONT_COMPRESS 4 /* don't compress after this pass */
#define SYNC_PASS_REWRITE 1 /* rewrite new bps after this pass */
extern int zfs_sync_pass_deferred_free;
/* spa namespace global mutex */
extern kmutex_t spa_namespace_lock;
include/sys/space_map.h
+6
View File
@@ -23,6 +23,10 @@
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
#ifndef _SYS_SPACE_MAP_H
#define _SYS_SPACE_MAP_H
@@ -136,6 +140,8 @@ struct space_map_ops {
typedef void space_map_func_t(space_map_t *sm, uint64_t start, uint64_t size);
extern void space_map_init(void);
extern void space_map_fini(void);
extern void space_map_create(space_map_t *sm, uint64_t start, uint64_t size,
uint8_t shift, kmutex_t *lp);
extern void space_map_destroy(space_map_t *sm);
include/sys/zio_impl.h
+5
View File
@@ -23,6 +23,10 @@
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
#ifndef _ZIO_IMPL_H
#define _ZIO_IMPL_H
@@ -143,6 +147,7 @@ enum zio_stage {
#define ZIO_FREE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
ZIO_STAGE_FREE_BP_INIT | \
ZIO_STAGE_ISSUE_ASYNC | \
ZIO_STAGE_DVA_FREE)
#define ZIO_DDT_FREE_PIPELINE \