1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
'\" t
.\"
.\" CDDL HEADER START
.\"
.\" The contents of this file are subject to the terms of the
.\" Common Development and Distribution License (the "License").
.\" You may not use this file except in compliance with the License.
.\"
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
.\" or http://www.opensolaris.org/os/licensing.
.\" See the License for the specific language governing permissions
.\" and limitations under the License.
.\"
.\" When distributing Covered Code, include this CDDL HEADER in each
.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
.\" If applicable, add the following below this CDDL HEADER, with the
.\" fields enclosed by brackets "[]" replaced with your own identifying
.\" information: Portions Copyright [yyyy] [name of copyright owner]
.\"
.\" CDDL HEADER END
.\"
.\"
.\" Copyright 2013 Darik Horn <dajhorn@vanadac.com>. All rights reserved.
.\"
.TH zpios 1 "2013 FEB 28" "ZFS on Linux" "User Commands"
.SH NAME
zpios \- Directly test the DMU.
.SH SYNOPSIS
.LP
.BI "zpios [options] <\-p " pool ">"
.SH DESCRIPTION
This utility runs in-kernel DMU performance and stress tests that do
not depend on the ZFS Posix Layer ("ZPL").
.SH OPTIONS
.HP
.BI "\-s" " regex" ", \-\-threadcount" " regex"
.IP
Start this many threads for each test series, specified as a comma
delimited regular expression. (eg: "-s 1,2,3")
.IP
This option is mutually exclusive with the \fBthreadcount_*\fR
options.
.HP
.BI "\-l" " regex_low" ", \-\-threadcount_low" " regex_low"
.HP
.BI "\-h" " regex_high" ", \-\-threadcount_high" " regex_high"
.HP
.BI "\-e" " regex_incr" ", \-\-threadcount_incr" " regex_incr"
.IP
Start \fIregex_low\fR threads for the first test,
add \fIregex_incr\fR threads for each subsequent test,
and start \fIregex_high\fR threads for the last test.
.IP
These three options must be specified together and are mutually
exclusive with the \fBthreadcount\fR option.
.HP
.BI "\-n" " regex" ", \-\-regioncount" " regex"
.IP
Create this many regions for each test series, specified as a comma
delimited regular expression. (eg: "-n 512,4096,65536")
.IP
This option is mutually exclusive with the \fBregioncount_*\fR
options.
.HP
.BI "\-i" " regex_low" ", \-\-regioncount_low" " regex_low"
.HP
.BI "\-j" " regex_high" ", \-\-regioncount_high" " regex_high"
.HP
.BI "\-k" " regex_incr" ", \-\-regioncount_incr" " regex_incr"
.IP
Create \fIregex_low\fR regions for the first test,
add \fIregex_incr\fR regions for each subsequent test, and
create \fIregex_high\fR regions for the last test.
.IP
These three options must be specified together and are mutually
exclusive with the \fBregioncount\fR option.
.HP
.BI "\-o" " size" ", \-\-offset" " size"
.IP
Create regions at \fIsize\fR offset for each test series, specified as
a comma delimited regular expression with an optional unit suffix.
(eg: "-o 4M" means four megabytes.)
.IP
This option is mutually exclusive with the \fBoffset_*\fR options.
.HP
.BI "\-m" " size_low" ", \-\-offset_low" " size_low"
.HP
.BI "\-q" " size_high" ", \-\-offset_high" " size_high"
.HP
.BI "\-r" " size_incr" ", \-\-offset_incr" " size_incr"
.IP
Create a region at \fIsize_low\fR offset for the first test, add
\fIsize_incr\fR to the offset for each subsequent test, and create
a region at \fIsize_high\fR offset for the last test.
.IP
These three options must be specified together and are mutually
exclusive with the \fBoffset\fR option.
.HP
.BI "\-c" " size" ", \-\-chunksize" " size"
.IP
Use \fIsize\fR chunks for each test, specified as a comma delimited
regular expression with an optional unit suffix. (eg: "-c 1M" means
one megabyte.) The chunk size must be at least the region size.
.IP
This option is mutually exclusive with the \fBchunksize_*\fB options.
.HP
.BI "\-a" " size_low" ", \-\-chunksize_low" " size_low"
.HP
.BI "\-b" " size_high" ", \-\-chunksize_high" " size_high"
.HP
.BI "\-g" " size_incr" ", \-\-chunksize_incr" " size_incr"
.IP
Use a \fIsize_low\fR chunk size for the first test, add \fIsize_incr\fR
to the chunk size for each subsequent test, and use a \fIsize_high\fR
chunk size for the last test.
.IP
These three options must be specified together and are mutually
exclusive with the \fBchunksize\fR option.
.HP
.BI "\-L" " dmu_flags" ", \-\-load" " dmu_flags"
.IP
Specify \fIdmuio\fR for regular DMU_IO, \fIssf\fR for single shared
file access, or \fIfpp\fR for per thread access. Use commas to delimit
multiple flags. (eg: "-L dmuio,ssf")
.HP
.BI "\-p" " name" ", \-\-pool" " name"
.IP
The pool name, which is mandatory.
.HP
.BI "\-M" " test" ", \-\-name" " test"
.IP
An arbitrary string that appears in the program output.
.HP
.BI "-x, \-\-cleanup"
.IP
Enable the DMU_REMOVE flag.
.HP
.BI "\-P" " command" ", \-\-prerun" " command"
.IP
Invoke \fIcommand\fR from the kernel before running the test. Shell
expansion is not performed and the environment is set to
HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
.HP
.BI "\-R" " command" ", \-\-postrun" " command"
.IP
Invoke \fIcommand\fR from the kernel after running the test. Shell
expansion is not performed and the environment is set to
HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
.HP
.BI "\-G" " directory" ", \-\-log" " directory"
.IP
Put logging output in this directory.
.HP
.BI "\-I" " size" ", \-\-regionnoise" " size"
.IP
Randomly vary the \fBregionsize\fR parameter for each test
modulo \fIsize\fR bytes.
.HP
.BI "\-N" " size" ", \-\-chunknoise" " size"
.IP
Randomly vary the \fBchunksize\fR parameter for each test
modulo \fIsize\fR bytes.
.HP
.BI "\-T" " time" ", \-\-threaddelay" " time"
.IP
Randomly vary the execution time for each test
modulo \fItime\fR kernel jiffies.
.HP
.BI "\-V" "" ", \-\-verify" ""
.IP
Enable the DMU_VERIFY flag for trivial data verification.
.HP
.BI "\-z" "" ", \-\-zerocopy" ""
.IP
Enable the DMU_READ_ZC and DMU_WRITE_ZC flags, which are
currently unimplemented for Linux.
.IP
.HP
.BI "\-O" "" ", \-\-nowait" ""
.IP
Enable the DMU_WRITE_NOWAIT flag.
.HP
.BI "\-f" "" ", \-\-noprefetch" ""
.IP
Enable the DMU_READ_NOPF flag.
.HP
.BI "\-H" "" ", \-\-human\-readable" ""
.IP
Print PASS and FAIL results explicitly and put unit suffixes on large
numbers.
.HP
.BI "\-v" "" ", \-\-verbose" ""
.IP
Increase output verbosity.
.HP
.BI "\-?" " " ", \-\-help" " "
.IP
Print the usage message.
.SH "AUTHORS"
The original zpios implementation was created by Cluster File Systems
Inc and adapted to ZFS on Linux by Brian Behlendorf
<behlendorf1@llnl.gov>.
This man page was written by Darik Horn <dajhorn@vanadac.com>.
.SH "SEE ALSO"
.BR zpool (8),
.BR zfs (8)
|
