Changeset 411 for branches/samba-3.3.x/docs/manpages/vfs_commit.8
- Timestamp:
- Mar 1, 2010, 3:05:48 PM (15 years ago)
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branches/samba-3.3.x/docs/manpages/vfs_commit.8
r368 r411 1 '\" t2 1 .\" Title: vfs_commit 3 2 .\" Author: [see the "AUTHOR" section] 4 .\" Generator: DocBook XSL Stylesheets v1.7 5.2<http://docbook.sf.net/>5 .\" Date: 0 1/14/20103 .\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/> 4 .\" Date: 02/22/2010 6 5 .\" Manual: System Administration tools 7 6 .\" Source: Samba 3.3 8 7 .\" Language: English 9 8 .\" 10 .TH "VFS_COMMIT" "8" "01/14/2010" "Samba 3\&.3" "System Administration tools" 9 .TH "VFS_COMMIT" "8" "02/22/2010" "Samba 3\&.3" "System Administration tools" 10 .\" ----------------------------------------------------------------- 11 .\" * (re)Define some macros 12 .\" ----------------------------------------------------------------- 13 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 14 .\" toupper - uppercase a string (locale-aware) 15 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 16 .de toupper 17 .tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ 18 \\$* 19 .tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz 20 .. 21 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22 .\" SH-xref - format a cross-reference to an SH section 23 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 24 .de SH-xref 25 .ie n \{\ 26 .\} 27 .toupper \\$* 28 .el \{\ 29 \\$* 30 .\} 31 .. 32 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 33 .\" SH - level-one heading that works better for non-TTY output 34 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 35 .de1 SH 36 .\" put an extra blank line of space above the head in non-TTY output 37 .if t \{\ 38 .sp 1 39 .\} 40 .sp \\n[PD]u 41 .nr an-level 1 42 .set-an-margin 43 .nr an-prevailing-indent \\n[IN] 44 .fi 45 .in \\n[an-margin]u 46 .ti 0 47 .HTML-TAG ".NH \\n[an-level]" 48 .it 1 an-trap 49 .nr an-no-space-flag 1 50 .nr an-break-flag 1 51 \." make the size of the head bigger 52 .ps +3 53 .ft B 54 .ne (2v + 1u) 55 .ie n \{\ 56 .\" if n (TTY output), use uppercase 57 .toupper \\$* 58 .\} 59 .el \{\ 60 .nr an-break-flag 0 61 .\" if not n (not TTY), use normal case (not uppercase) 62 \\$1 63 .in \\n[an-margin]u 64 .ti 0 65 .\" if not n (not TTY), put a border/line under subheading 66 .sp -.6 67 \l'\n(.lu' 68 .\} 69 .. 70 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 71 .\" SS - level-two heading that works better for non-TTY output 72 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 .de1 SS 74 .sp \\n[PD]u 75 .nr an-level 1 76 .set-an-margin 77 .nr an-prevailing-indent \\n[IN] 78 .fi 79 .in \\n[IN]u 80 .ti \\n[SN]u 81 .it 1 an-trap 82 .nr an-no-space-flag 1 83 .nr an-break-flag 1 84 .ps \\n[PS-SS]u 85 \." make the size of the head bigger 86 .ps +2 87 .ft B 88 .ne (2v + 1u) 89 .if \\n[.$] \&\\$* 90 .. 91 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 92 .\" BB/BE - put background/screen (filled box) around block of text 93 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 94 .de BB 95 .if t \{\ 96 .sp -.5 97 .br 98 .in +2n 99 .ll -2n 100 .gcolor red 101 .di BX 102 .\} 103 .. 104 .de EB 105 .if t \{\ 106 .if "\\$2"adjust-for-leading-newline" \{\ 107 .sp -1 108 .\} 109 .br 110 .di 111 .in 112 .ll 113 .gcolor 114 .nr BW \\n(.lu-\\n(.i 115 .nr BH \\n(dn+.5v 116 .ne \\n(BHu+.5v 117 .ie "\\$2"adjust-for-leading-newline" \{\ 118 \M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] 119 .\} 120 .el \{\ 121 \M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] 122 .\} 123 .in 0 124 .sp -.5v 125 .nf 126 .BX 127 .in 128 .sp .5v 129 .fi 130 .\} 131 .. 132 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 133 .\" BM/EM - put colored marker in margin next to block of text 134 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 135 .de BM 136 .if t \{\ 137 .br 138 .ll -2n 139 .gcolor red 140 .di BX 141 .\} 142 .. 143 .de EM 144 .if t \{\ 145 .br 146 .di 147 .ll 148 .gcolor 149 .nr BH \\n(dn 150 .ne \\n(BHu 151 \M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] 152 .in 0 153 .nf 154 .BX 155 .in 156 .fi 157 .\} 158 .. 11 159 .\" ----------------------------------------------------------------- 12 160 .\" * set default formatting … … 19 167 .\" * MAIN CONTENT STARTS HERE * 20 168 .\" ----------------------------------------------------------------- 21 .SH "N AME"169 .SH "Name" 22 170 vfs_commit \- flush dirty data at specified intervals 23 .SH "SYNOPSIS" 171 .SH "Synopsis" 172 .fam C 24 173 .HP \w'\ 'u 25 vfs objects = commit 174 \FCvfs objects = commit\F[] 175 .fam 26 176 .SH "DESCRIPTION" 27 177 .PP … … 31 181 .PP 32 182 The 33 vfs_commit 183 \FCvfs_commit\F[] 34 184 VFS module keeps track of the amount of data written to a file and synchronizes it to disk when a specified amount accumulates\&. 35 185 .PP 36 vfs_commit 186 \FCvfs_commit\F[] 37 187 is useful in two circumstances\&. First, if you have very precious data, the impact of unexpected power loss can be minimized by a small commit:dthresh value\&. Secondly, write performance can be improved on some systems by flushing file data early and at regular intervals\&. 38 188 .PP … … 54 204 .IP \(bu 2.3 55 205 .\} 56 K 206 \FCK\F[] 57 207 \- BYTES is a number of kilobytes 58 208 .RE … … 66 216 .IP \(bu 2.3 67 217 .\} 68 M 218 \FCM\F[] 69 219 \- BYTES is a number of megabytes 70 220 .RE … … 78 228 .IP \(bu 2.3 79 229 .\} 80 G 230 \FCG\F[] 81 231 \- BYTES is a number of gigabytes 82 232 .sp … … 90 240 .RS 4 91 241 .\} 242 .fam C 243 .ps -1 92 244 .nf 245 .if t \{\ 246 .sp -1 247 .\} 248 .BB lightgray adjust-for-leading-newline 249 .sp -1 250 93 251 \fI[precious]\fR 94 252 \m[blue]\fBpath = /data/precious\fR\m[] 95 253 \m[blue]\fBvfs objects = commit\fR\m[] 96 254 \m[blue]\fBcommit:dthresh = 512K\fR\m[] 97 .fi 255 .EB lightgray adjust-for-leading-newline 256 .if t \{\ 257 .sp 1 258 .\} 259 .fi 260 .fam 261 .ps +1 98 262 .if n \{\ 99 263 .RE … … 102 266 .PP 103 267 On some systems, the data synchronization performed by 104 commit 268 \FCcommit\F[] 105 269 may reduce performance\&. 106 270 .SH "VERSION"
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