Runtime Stats - Revision history

Christian: minor formatting fixes

2010-04-27T01:20:49Z

minor formatting fixes

← Older revision		Revision as of 01:20, 27 April 2010
Line 1:		Line 1:
	This page intends to describe info available from /proc/fs/xfs/stat		This page intends to describe info available from <tt>/proc/fs/xfs/stat</tt>

	__TOC__		__TOC__
Line 349:		Line 349:

	== External links ==		== External links ==
	# Linux kernel sources~~, for example~~: http://~~linux~~.~~sourcearchive~~.com/~~documentation~~/2.6.28-9.30/~~xfs__stats_8h-source~~.~~html~~		# Linux kernel sources: [http://oss.sgi.com/cgi-bin/gitweb.cgi?p=xfs/xfs.git;a=blob;f=fs/xfs/linux-2.6/xfs_stats.h;hb=HEAD xfs_stats.h]
	# [http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain xfs_stats.pl] - script to parse and display xfs statistics		# [http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain xfs_stats.pl] - script to parse and display xfs statistics
	# Developers on [irc://irc.freenode.org/xfs irc]		# Developers on [irc://irc.freenode.org/xfs irc]

CoolCold: /* Overview */

2009-06-14T23:02:38Z

Overview

← Older revision		Revision as of 23:02, 14 June 2009
Line 5:		Line 5:

	== Overview ==		== Overview ==
	~~blabla~~		Being advanced filesystem, XFS provides some internal statistics to user's view, which can be helpful on debugging/understanding IO characteristics and optimizing performance. Data available in /proc/fs/xfs/stat as dump of variables values grouped by type of information it holds.


	== output example ==		== output example ==

CoolCold: visual representation, fields with no info provided marked with red background

2009-06-14T22:55:29Z

visual representation, fields with no info provided marked with red background

← Older revision		Revision as of 22:55, 14 June 2009
Line 1:		Line 1:
	<strong><span style="color:red">THIS PAGE IS NOT READY - I SHOULD RECHECK FIELDS ORDER FROM KERNEL SOURCES, CUZ http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain does some reordering </span></strong>

	This page intends to describe info available from /proc/fs/xfs/stat		This page intends to describe info available from /proc/fs/xfs/stat

Line 12:		Line 10:
	== output example ==		== output example ==

	~~for example:~~
	<pre>		<pre>
	extent_alloc 4260849 125170297 4618726 131131897		extent_alloc 4260849 125170297 4618726 131131897
Line 33:		Line 30:
	</pre>		</pre>

	~~Values~~ shown above ~~meanings~~ presented as table:		== Fields table ==
			Numbers shown in output example above are presented as table of value names. Cells with <span style="background-color: red;">red background</span> lack meaningful description and should be edited.
	{\| style="white-space:nowrap; text-align:center; border-spacing: 2px; border: 1px solid #666666; font-family: Verdana, Cursor;font-size: 10px;font-weight: bold;"		{\| style="white-space:nowrap; text-align:center; border-spacing: 2px; border: 1px solid #666666; font-family: Verdana, Cursor;font-size: 10px;font-weight: bold;"
	\|-style="background-color: #f0f0f0;"		\|-style="background-color: #f0f0f0;"
Line 88:		Line 86:
	\| xs_log_noiclogs		\| xs_log_noiclogs
	\| xs_log_force		\| xs_log_force
	\| xs_log_force_sleep		\| <span style="background-color: red;">xs_log_force_sleep</span>
	\|-style="background-color: #f0f0f0;"		\|-style="background-color: #f0f0f0;"
	\| [[#push_ail\|push_ail - Tail-Pushing Stats]]		\| [[#push_ail\|push_ail - Tail-Pushing Stats]]
	\| xs_try_logspace		\| <span style="background-color: red;">xs_try_logspace</span>
	\| xs_sleep_logspace		\| <span style="background-color: red;">xs_sleep_logspace</span>
	\| xs_push_ail		\| <span style="background-color: red;">xs_push_ail</span>
	\| xs_push_ail_success		\| <span style="background-color: red;">xs_push_ail_success</span>
	\| xs_push_ail_pushbuf		\| <span style="background-color: red;">xs_push_ail_pushbuf</span>
	\| xs_push_ail_pinned		\| <span style="background-color: red;">xs_push_ail_pinned</span>
	\| xs_push_ail_locked		\| <span style="background-color: red;">xs_push_ail_locked</span>
	\| xs_push_ail_flushing		\| <span style="background-color: red;">xs_push_ail_flushing</span>
	\| xs_push_ail_restarts		\| <span style="background-color: red;">xs_push_ail_restarts</span>
	\| xs_push_ail_flush		\| <span style="background-color: red;">xs_push_ail_flush</span>
	\|-style="background-color: #bfbfff;"		\|-style="background-color: #bfbfff;"
	\| [[#xstrat\|xstrat - IoMap Write Convert]]		\| [[#xstrat\|xstrat - IoMap Write Convert]]
Line 118:		Line 116:
	\| [[#icluster\|icluster - Inode Clustering]]		\| [[#icluster\|icluster - Inode Clustering]]
	\| xs_iflush_count		\| xs_iflush_count
	\| xs_icluster_flushcnt		\| <span style="background-color: red;">xs_icluster_flushcnt</span>
	\| xs_icluster_flushinode		\| xs_icluster_flushinode
	\|-style="background-color: #bfbfff;"		\|-style="background-color: #bfbfff;"
	\| [[#vnodes\|vnodes - Vnode Statistics]]		\| [[#vnodes\|vnodes - Vnode Statistics]]
	\| vn_active		\| <span style="background-color: red;">vn_active</span>
	\| vn_alloc		\| <span style="background-color: red;">vn_alloc</span>
	\| vn_get		\| <span style="background-color: red;">vn_get</span>
	\| vn_hold		\| <span style="background-color: red;">vn_hold</span>
	\| vn_rele		\| <span style="background-color: red;">vn_rele</span>
	\| vn_reclaim		\| <span style="background-color: red;">vn_reclaim</span>
	\| vn_remove		\| <span style="background-color: red;">vn_remove</span>
	\| vn_free		\| <span style="background-color: red;">vn_free</span>
	\|-style="background-color: #f0f0f0;"		\|-style="background-color: #f0f0f0;"
	\| [[#buf\|buf - Buf Statistics]]		\| [[#buf\|buf - Buf Statistics]]
	\| <span style="background-color: red">xb_get</span>		\| <span style="background-color: red;">xb_get</span>
	\| <span style="background-color: red;"> xb_create</span>		\| <span style="background-color: red;">xb_create</span>
	\| xb_get_locked		\| <span style="background-color: red;">xb_get_locked</span>
	\| xb_get_locked_waited		\| <span style="background-color: red;">xb_get_locked_waited</span>
	\| xb_busy_locked		\| <span style="background-color: red;">xb_busy_locked</span>
	\| xb_miss_locked		\| <span style="background-color: red;">xb_miss_locked</span>
	\| xb_page_retries		\| <span style="background-color: red;">xb_page_retries</span>
	\| xb_page_found		\| <span style="background-color: red;">xb_page_found</span>
	\| xb_get_read		\| <span style="background-color: red;">xb_get_read</span>
	\|-style="background-color: #bfbfff;"		\|-style="background-color: #bfbfff;"
	\| [[#xpc\|xpc - eXtended Precision Counters]]		\| [[#xpc\|xpc - eXtended Precision Counters]]
Line 147:		Line 145:
	\| xs_read_bytes		\| xs_read_bytes
	\|}		\|}



	== Fields description: ==		== Fields description: ==

CoolCold at 17:22, 14 June 2009

2009-06-14T17:22:23Z

← Older revision		Revision as of 17:22, 14 June 2009
Line 34:		Line 34:

	Values shown above meanings presented as table:		Values shown above meanings presented as table:
	{\| style="white-space:nowrap; text-align:center;" border~~="1~~"		{\| style="white-space:nowrap; text-align:center; border-spacing: 2px; border: 1px solid #666666; font-family: Verdana, Cursor;font-size: 10px;font-weight: bold;"
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#extent_alloc\|extent_alloc - Extent Allocation]]		\| [[#extent_alloc\|extent_alloc - Extent Allocation]]
	\| xs_allocx		\| xs_allocx
Line 41:		Line 41:
	\| xs_freex		\| xs_freex
	\| xs_freeb		\| xs_freeb
	\|-		\|- style="background-color: #bfbfff;"
	\| [[#abt\|abt - Allocation Btree]]		\| [[#abt\|abt - Allocation Btree]]
	\| xs_abt_lookup		\| xs_abt_lookup
Line 47:		Line 47:
	\| xs_abt_insrec		\| xs_abt_insrec
	\| xs_abt_delrec		\| xs_abt_delrec
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#blk_map\|blk_map - Block Mapping]]		\| [[#blk_map\|blk_map - Block Mapping]]
	\| xs_blk_mapr		\| xs_blk_mapr
Line 56:		Line 56:
	\| xs_look_exlist		\| xs_look_exlist
	\| xs_cmp_exlist		\| xs_cmp_exlist
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#bmbt\|bmbt - Block Map Btree]]		\| [[#bmbt\|bmbt - Block Map Btree]]
	\| xs_bmbt_lookup		\| xs_bmbt_lookup
Line 62:		Line 62:
	\| xs_bmbt_insrec		\| xs_bmbt_insrec
	\| xs_bmbt_delrec		\| xs_bmbt_delrec
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#dir\|dir - Directory Operations]]		\| [[#dir\|dir - Directory Operations]]
	\| xs_dir_lookup		\| xs_dir_lookup
Line 68:		Line 68:
	\| xs_dir_remove		\| xs_dir_remove
	\| xs_dir_getdents		\| xs_dir_getdents
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#trans\|trans - Transactions]]		\| [[#trans\|trans - Transactions]]
	\| xs_trans_sync		\| xs_trans_sync
	\| xs_trans_async		\| xs_trans_async
	\| xs_trans_empty		\| xs_trans_empty
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#ig\|ig - Inode Operations]]		\| [[#ig\|ig - Inode Operations]]
	\| xs_ig_attempts		\| xs_ig_attempts
Line 82:		Line 82:
	\| xs_ig_reclaims		\| xs_ig_reclaims
	\| xs_ig_attrchg		\| xs_ig_attrchg
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#log\|log - Log Operations]]		\| [[#log\|log - Log Operations]]
	\| xs_log_writes		\| xs_log_writes
Line 89:		Line 89:
	\| xs_log_force		\| xs_log_force
	\| xs_log_force_sleep		\| xs_log_force_sleep
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#push_ail\|push_ail - Tail-Pushing Stats]]		\| [[#push_ail\|push_ail - Tail-Pushing Stats]]
	\| xs_try_logspace		\| xs_try_logspace
Line 101:		Line 101:
	\| xs_push_ail_restarts		\| xs_push_ail_restarts
	\| xs_push_ail_flush		\| xs_push_ail_flush
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#xstrat\|xstrat - IoMap Write Convert]]		\| [[#xstrat\|xstrat - IoMap Write Convert]]
	\| xs_xstrat_quick		\| xs_xstrat_quick
	\| xs_xstrat_split		\| xs_xstrat_split
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#rw\|rw - Read/Write Stats]]		\| [[#rw\|rw - Read/Write Stats]]
	\| xs_write_calls		\| xs_write_calls
	\| xs_read_calls		\| xs_read_calls
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#attr\|attr - Attribute Operations]]		\| [[#attr\|attr - Attribute Operations]]
	\| xs_attr_get		\| xs_attr_get
Line 115:		Line 115:
	\| xs_attr_remove		\| xs_attr_remove
	\| xs_attr_list		\| xs_attr_list
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#icluster\|icluster - Inode Clustering]]		\| [[#icluster\|icluster - Inode Clustering]]
	\| xs_iflush_count		\| xs_iflush_count
	\| xs_icluster_flushcnt		\| xs_icluster_flushcnt
	\| xs_icluster_flushinode		\| xs_icluster_flushinode
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#vnodes\|vnodes - Vnode Statistics]]		\| [[#vnodes\|vnodes - Vnode Statistics]]
	\| vn_active		\| vn_active
Line 130:		Line 130:
	\| vn_remove		\| vn_remove
	\| vn_free		\| vn_free
	\|-		\|-style="background-color: #f0f0f0;"
	\| [[#buf\|buf - Buf Statistics]]		\| [[#buf\|buf - Buf Statistics]]
	\| xb_get		\| <span style="background-color: red">xb_get</span>
	\| xb_create		\| <span style="background-color: red;"> xb_create</span>
	\| xb_get_locked		\| xb_get_locked
	\| xb_get_locked_waited		\| xb_get_locked_waited
Line 141:		Line 141:
	\| xb_page_found		\| xb_page_found
	\| xb_get_read		\| xb_get_read
	\|-		\|-style="background-color: #bfbfff;"
	\| [[#xpc\|xpc - eXtended Precision Counters]]		\| [[#xpc\|xpc - eXtended Precision Counters]]
	\| xs_xstrat_bytes		\| xs_xstrat_bytes
Line 346:		Line 346:


	NOTES		== NOTES ==
	Many of these statistics are monotonically increasing counters, and of course are subject to counter overflow (the final three listed above are		Many of these statistics are monotonically increasing counters, and of course are subject to counter overflow (the final three listed above are 64-bit values, all others are 32-bit values). As such they are of limited value in this raw form - if you are interested in monitoring throughput (e.g. bytes read/written per second), or other rates of change, you will be better served by investigating the PCP package more thoroughly - it contains a number of performance analysis tools which can help in this regard.
	64-bit values, all others are 32-bit values). As such they are of limited value in this raw form - if you are interested in monitoring throughput
	(e.g. bytes read/written per second), or other rates of change, you will be better served by investigating the PCP package more thoroughly - it		== External links ==
	contains a number of performance analysis tools which can help in this regard.		# Linux kernel sources, for example: http://linux.sourcearchive.com/documentation/2.6.28-9.30/xfs__stats_8h-source.html
			# [http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain xfs_stats.pl] - script to parse and display xfs statistics
			# Developers on [irc://irc.freenode.org/xfs irc]

CoolCold: import of fields from xfsstats struct of xfs_stats.h

2009-06-14T07:47:11Z

import of fields from xfsstats struct of xfs_stats.h

Show changes

CoolCold at 15:49, 8 June 2009

2009-06-08T15:49:00Z

← Older revision		Revision as of 15:49, 8 June 2009
Line 1:		Line 1:
	THIS PAGE IS NOT READY - I SHOULD RECHECK FIELDS ORDER FROM KERNEL SOURCES, CUZ http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain does some reordering		<strong><span style="color:red">THIS PAGE IS NOT READY - I SHOULD RECHECK FIELDS ORDER FROM KERNEL SOURCES, CUZ http://oss.sgi.com/cgi-bin/cvsweb.cgi/xfs-cmds/xfsmisc/xfs_stats.pl?rev=1.7;content-type=text%2Fplain does some reordering </span></strong>

	This page intends to describe info available from /proc/fs/xfs/stat		This page intends to describe info available from /proc/fs/xfs/stat

CoolCold at 15:36, 8 June 2009

2009-06-08T15:36:53Z

← Older revision		Revision as of 15:36, 8 June 2009
Line 74:		Line 74:
	\| xs_trans_empty		\| xs_trans_empty
	\|-		\|-
	\| ig - Inode Operations		\| [[#ig\|ig - Inode Operations]]
	\| xs_ig_attempts		\| xs_ig_attempts
	\| xs_ig_found		\| xs_ig_found
Line 83:		Line 83:
	\| xs_ig_attrchg		\| xs_ig_attrchg
	\|-		\|-
	\| log - Log Operations		\| [[#log\|log - Log Operations]]
	\| xs_log_writes		\| xs_log_writes
	\| xs_log_blocks		\| xs_log_blocks
Line 90:		Line 90:
	\| xs_log_force_sleep		\| xs_log_force_sleep
	\|-		\|-
	\| push_ail - Tail-Pushing Stats		\| [[#push_ail\|push_ail - Tail-Pushing Stats]]
	\| xs_try_logspace		\| xs_try_logspace
	\| xs_sleep_logspace		\| xs_sleep_logspace
Line 102:		Line 102:
	\| xs_push_ail_flush		\| xs_push_ail_flush
	\|-		\|-
	\| xstrat - IoMap Write Convert		\| [[#xstrat\|xstrat - IoMap Write Convert]]
	\| xs_xstrat_bytes		\| xs_xstrat_bytes
	\| xs_xstrat_quick		\| xs_xstrat_quick
Line 259:		Line 259:
	=== push_ail - Tail-Pushing Stats ===		=== push_ail - Tail-Pushing Stats ===
	<span id="push_ail">		<span id="push_ail">
	xs_try_logspace (xfs.log_tail.try_logspace) - Value from the xs_try_logspace field of struct xfsstats.		xs_try_logspace (xfs.log_tail.try_logspace) - Value from the xs_try_logspace field of struct xfsstats. <br>
	xs_sleep_logspace (xfs.log_tail.sleep_logspace) - Value from the xs_sleep_logspace field of struct xfsstats.		xs_sleep_logspace (xfs.log_tail.sleep_logspace) - Value from the xs_sleep_logspace field of struct xfsstats. <br>
	xs_push_ail (xfs.log_tail.push_ail.pushes) - The number of times the tail of the AIL is moved forward. It is equivalent to the number of successful calls to the function xfs_trans_push_ail().		xs_push_ail (xfs.log_tail.push_ail.pushes) - The number of times the tail of the AIL is moved forward. It is equivalent to the number of successful calls to the function xfs_trans_push_ail(). <br>
	xs_push_ail_success (xfs.log_tail.push_ail.success) - Value from xs_push_ail_success field of struct xfsstats.		xs_push_ail_success (xfs.log_tail.push_ail.success) - Value from xs_push_ail_success field of struct xfsstats. <br>
	xs_push_ail_pushbuf (xfs.log_tail.push_ail.pushbuf) - Value from xs_push_ail_pushbuf field of struct xfsstats.		xs_push_ail_pushbuf (xfs.log_tail.push_ail.pushbuf) - Value from xs_push_ail_pushbuf field of struct xfsstats. <br>
	xs_push_ail_pinned (xfs.log_tail.push_ail.pinned) - Value from xs_push_ail_pinned field of struct xfsstats.		xs_push_ail_pinned (xfs.log_tail.push_ail.pinned) - Value from xs_push_ail_pinned field of struct xfsstats. <br>
	xs_push_ail_locked (xfs.log_tail.push_ail.locked) - Value from xs_push_ail_locked field of struct xfsstats.		xs_push_ail_locked (xfs.log_tail.push_ail.locked) - Value from xs_push_ail_locked field of struct xfsstats. <br>
	xs_push_ail_flushing (xfs.log_tail.push_ail.flushing) - Value from xs_push_ail_flushing field of struct xfsstats.		xs_push_ail_flushing (xfs.log_tail.push_ail.flushing) - Value from xs_push_ail_flushing field of struct xfsstats. <br>
	xs_push_ail_restarts (xfs.log_tail.push_ail.restarts) - Value from xs_push_ail_restarts field of struct xfsstats.		xs_push_ail_restarts (xfs.log_tail.push_ail.restarts) - Value from xs_push_ail_restarts field of struct xfsstats. <br>
	xs_push_ail_flush (xfs.log_tail.push_ail.flush) - Value from xs_push_ail_flush field of struct xfsstats.		xs_push_ail_flush (xfs.log_tail.push_ail.flush) - Value from xs_push_ail_flush field of struct xfsstats. <br>

	=== xstrat - IoMap Write Convert ===		=== xstrat - IoMap Write Convert ===

CoolCold at 15:01, 8 June 2009

2009-06-08T15:01:17Z

Show changes

CoolCold at 11:51, 8 June 2009

2009-06-08T11:51:41Z

← Older revision		Revision as of 11:51, 8 June 2009
Line 130:		Line 130:
	\| pb_page_found		\| pb_page_found
	\| pb_get_read		\| pb_get_read
			\|-
			\|xpc - eXtended Precision Counters
			\| xs_xstrat_bytes
			\| xs_write_bytes
			\| xs_read_bytes
	\|}		\|}

Line 445:		Line 450:

	This is a count of bytes of file data flushed out by the XFS flushing daemons.		This is a count of bytes of file data flushed out by the XFS flushing daemons.

	NOTES		NOTES
	Many of these statistics are monotonically increasing counters, and of course are subject to counter overflow (the final three listed above are		Many of these statistics are monotonically increasing counters, and of course are subject to counter overflow (the final three listed above are

CoolCold at 07:56, 8 June 2009

2009-06-08T07:56:36Z

← Older revision		Revision as of 07:56, 8 June 2009
Line 22:		Line 22:

	Values shown above meanings presented as table:		Values shown above meanings presented as table:
	{\| style="width:75%" border="1"		{\| style="width:75%;white-space:nowrap; text-align:center;" border="1"
	\|-		\|-
	\| extent_alloc - Extent Allocation		\| extent_alloc - Extent Allocation
Line 77:		Line 77:
	\| xs_log_force_sleep		\| xs_log_force_sleep
	\|-		\|-
	\| push_ail - Tail-Pushing Stats		\| push_ail - Tail-Pushing Stats
	\| xs_try_logspace		\| xs_try_logspace
	\| xs_sleep_logspace		\| xs_sleep_logspace