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-.\"
-.\" This file and its contents are supplied under the terms of the
-.\" Common Development and Distribution License ("CDDL"), version 1.0.
-.\" You may only use this file in accordance with the terms of version
-.\" 1.0 of the CDDL.
-.\"
-.\" A full copy of the text of the CDDL should have accompanied this
-.\" source. A copy of the CDDL is also available via the Internet at
-.\" http://www.illumos.org/license/CDDL.
-.\"
-.\"
-.\" Copyright 2014 Adam Stevko. All rights reserved.
-.\" Copyright (c) 2015 by Delphix. All rights reserved.
-.\"
-.TH ARCSTAT 1M "Feb 4, 2014"
-.SH NAME
-arcstat \- report ZFS ARC and L2ARC statistics
-.SH SYNOPSIS
-.nf
-\fBarcstat\fR [\fB-hvxr\fR] [\fB-f field[,field]...\fR] [\fB-o file\fR] [\fB-s string\fR]
- [\fBinterval\fR [\fBcount\fR]]
-.fi
-
-.SH DESCRIPTION
-The \fBarcstat\fR utility print various ZFS ARC and L2ARC statistics in
-vmstat-like fashion.
-.sp
-
-.sp
-.LP
-The \fBarcstat\fR command reports the following information:
-.sp
-.ne 2
-
-.\"
-.sp
-.ne 1
-.na
-\fBc \fR
-.ad
-.RS 14n
-ARC Target Size
-.RE
-
-.sp
-.ne 2
-.na
-\fBdh% \fR
-.ad
-.RS 14n
-Demand Data hit percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBdm% \fR
-.ad
-.RS 14n
-Demand Data miss percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBmfu \fR
-.ad
-.RS 14n
-MFU List hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmh% \fR
-.ad
-.RS 14n
-Metadata hit percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBmm% \fR
-.ad
-.RS 14n
-Metadata miss percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBmru \fR
-.ad
-.RS 14n
-MRU List hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBph% \fR
-.ad
-.RS 14n
-Prefetch hits percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBpm% \fR
-.ad
-.RS 14n
-Prefetch miss percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBdhit \fR
-.ad
-.RS 14n
-Demand Data hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBdmis \fR
-.ad
-.RS 14n
-Demand Data misses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBhit% \fR
-.ad
-.RS 14n
-ARC Hit percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBhits \fR
-.ad
-.RS 14n
-ARC reads per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmfug \fR
-.ad
-.RS 14n
-MFU Ghost List hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmhit \fR
-.ad
-.RS 14n
-Metadata hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmiss \fR
-.ad
-.RS 14n
-ARC misses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmmis \fR
-.ad
-.RS 14n
-Metadata misses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmrug \fR
-.ad
-.RS 14n
-MRU Ghost List hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBphit \fR
-.ad
-.RS 14n
-Prefetch hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBpmis \fR
-.ad
-.RS 14n
-Prefetch misses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBread \fR
-.ad
-.RS 14n
-Total ARC accesses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBtime \fR
-.ad
-.RS 14n
-Time
-.RE
-
-.sp
-.ne 2
-.na
-\fBarcsz \fR
-.ad
-.RS 14n
-ARC Size
-.RE
-
-.sp
-.ne 2
-.na
-\fBdread \fR
-.ad
-.RS 14n
-Demand data accesses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBeskip \fR
-.ad
-.RS 14n
-evict_skip per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBmiss% \fR
-.ad
-.RS 14n
-ARC miss percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBmread \fR
-.ad
-.RS 14n
-Metadata accesses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBpread \fR
-.ad
-.RS 14n
-Prefetch accesses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2hit% \fR
-.ad
-.RS 14n
-L2ARC access hit percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2hits \fR
-.ad
-.RS 14n
-L2ARC hits per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2miss \fR
-.ad
-.RS 14n
-L2ARC misses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2read \fR
-.ad
-.RS 14n
-Total L2ARC accesses per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2pref \fR
-.ad
-.RS 14n
-L2ARC prefetch allocated size per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2pref% \fR
-.ad
-.RS 14n
-L2ARC prefetch allocated size percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2mfu \fR
-.ad
-.RS 14n
-L2ARC MFU allocated size per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2mfu% \fR
-.ad
-.RS 14n
-L2ARC MFU allocated size percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2mru \fR
-.ad
-.RS 14n
-L2ARC MRU allocated size per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2mru% \fR
-.ad
-.RS 14n
-L2ARC MRU allocated size percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2data \fR
-.ad
-.RS 14n
-L2ARC data (buf content) allocated size per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2data% \fR
-.ad
-.RS 14n
-L2ARC data (buf content) allocated size percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2meta \fR
-.ad
-.RS 14n
-L2ARC metadata (buf content) allocated size per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2meta% \fR
-.ad
-.RS 14n
-L2ARC metadata (buf content) allocated size percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2size \fR
-.ad
-.RS 14n
-Size of the L2ARC
-.RE
-
-.sp
-.ne 2
-.na
-\fBmtxmis \fR
-.ad
-.RS 14n
-mutex_miss per second
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2bytes \fR
-.ad
-.RS 14n
-bytes read per second from the L2ARC
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2miss% \fR
-.ad
-.RS 14n
-L2ARC access miss percentage
-.RE
-
-.sp
-.ne 2
-.na
-\fBl2asize \fR
-.ad
-.RS 14n
-Actual (compressed) size of the L2ARC
-.RE
-.\"
-
-.SH OPTIONS
-The following options are supported:
-
-.sp
-.ne 2
-.na
-\fB\fB-f\fR\fR
-.ad
-.RS 12n
-Display only specific fields. See \fBDESCRIPTION\fR for supported statistics.
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fB-h\fR\fR
-.ad
-.RS 12n
-Display help message.
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fB-o\fR\fR
-.ad
-.RS 12n
-Report statistics to a file instead of the standard output.
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fB-s\fR\fR
-.ad
-.RS 12n
-Display data with a specified separator (default: 2 spaces).
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fB-x\fR\fR
-
-.ad
-.RS 12n
-Print extended stats (same as -f time,mfu,mru,mfug,mrug,eskip,mtxmis,dread,pread,read).
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fB-v\fR\fR
-.ad
-.RS 12n
-Show field headers and definitions
-.RE
-
-.SH OPERANDS
-The following operands are supported:
-.sp
-.ne 2
-.na
-\fB\fIcount\fR\fR
-.ad
-.RS 12n
-Display only \fIcount\fR reports.
-.RE
-
-.sp
-.ne 2
-.na
-\fB\fIinterval\fR\fR
-.ad
-.RS 12n
-Specify the sampling interval in seconds.
-.RE
-
-.SH AUTHORS
-arcstat was originally written by Neelakanth Nadgir and supported only ZFS ARC statistics.
-Mike Harsch updated it to support L2ARC statistics.