1 .TH SLEEPGRAPH 8 1 .TH SLEEPGRAPH 8
2 .SH NAME 2 .SH NAME
3 sleepgraph \- Suspend/Resume timing analysis 3 sleepgraph \- Suspend/Resume timing analysis
4 .SH SYNOPSIS 4 .SH SYNOPSIS
5 .ft B 5 .ft B
6 .B sleepgraph 6 .B sleepgraph
7 .RB [ OPTIONS ] 7 .RB [ OPTIONS ]
8 .RB [ COMMAND ] 8 .RB [ COMMAND ]
9 .SH DESCRIPTION 9 .SH DESCRIPTION
10 \fBsleepgraph \fP is designed to assist kernel 10 \fBsleepgraph \fP is designed to assist kernel and OS developers
11 in optimizing their linux stack's suspend/resu 11 in optimizing their linux stack's suspend/resume time. Using a kernel
12 image built with a few extra options enabled, 12 image built with a few extra options enabled, the tool will execute a
13 suspend and capture dmesg and ftrace data unti 13 suspend and capture dmesg and ftrace data until resume is complete.
14 This data is transformed into a device timelin 14 This data is transformed into a device timeline and an optional
15 callgraph to give a detailed view of which dev 15 callgraph to give a detailed view of which devices/subsystems are
16 taking the most time in suspend/resume. 16 taking the most time in suspend/resume.
17 .PP 17 .PP
18 If no specific command is given, the default b 18 If no specific command is given, the default behavior is to initiate
19 a suspend/resume. 19 a suspend/resume.
20 .PP 20 .PP
21 Generates output files in subdirectory: suspen 21 Generates output files in subdirectory: suspend-yymmdd-HHMMSS
22 html timeline : <hostname>_<mode>.htm 22 html timeline : <hostname>_<mode>.html
23 raw dmesg file : <hostname>_<mode>_dme 23 raw dmesg file : <hostname>_<mode>_dmesg.txt
24 raw ftrace file : <hostname>_<mode>_ftr 24 raw ftrace file : <hostname>_<mode>_ftrace.txt
25 .SH OPTIONS 25 .SH OPTIONS
26 .TP 26 .TP
27 \fB-h\fR 27 \fB-h\fR
28 Print the help text. 28 Print the help text.
29 .TP 29 .TP
30 \fB-v\fR 30 \fB-v\fR
31 Print the current tool version. 31 Print the current tool version.
32 .TP 32 .TP
33 \fB-verbose\fR 33 \fB-verbose\fR
34 Print extra information during execution and a 34 Print extra information during execution and analysis.
35 .TP 35 .TP
36 \fB-config \fIfile\fR 36 \fB-config \fIfile\fR
37 Pull arguments and config options from a file. 37 Pull arguments and config options from a file.
38 .TP 38 .TP
39 \fB-m \fImode\fR 39 \fB-m \fImode\fR
40 Mode to initiate for suspend e.g. standby, fre 40 Mode to initiate for suspend e.g. standby, freeze, mem (default: mem).
41 .TP 41 .TP
42 \fB-o \fIname\fR 42 \fB-o \fIname\fR
43 Overrides the output subdirectory name when ru 43 Overrides the output subdirectory name when running a new test.
44 Use {date}, {time}, {hostname} for current val 44 Use {date}, {time}, {hostname} for current values.
45 .sp 45 .sp
46 e.g. suspend-{hostname}-{date}-{time} 46 e.g. suspend-{hostname}-{date}-{time}
47 .TP 47 .TP
48 \fB-rtcwake \fIt\fR | off 48 \fB-rtcwake \fIt\fR | off
49 Use rtcwake to autoresume after \fIt\fR second 49 Use rtcwake to autoresume after \fIt\fR seconds (default: 15). Set t to "off" to
50 disable rtcwake and require a user keypress to 50 disable rtcwake and require a user keypress to resume.
51 .TP 51 .TP
52 \fB-addlogs\fR 52 \fB-addlogs\fR
53 Add the dmesg and ftrace logs to the html outp 53 Add the dmesg and ftrace logs to the html output. They will be viewable by
54 clicking buttons in the timeline. 54 clicking buttons in the timeline.
55 .TP 55 .TP
56 \fB-noturbostat\fR <<
57 By default, if turbostat is found and the requ <<
58 will execute the suspend via turbostat and col <<
59 This option disables the use of turbostat. <<
60 .TP <<
61 \fB-result \fIfile\fR 56 \fB-result \fIfile\fR
62 Export a results table to a text file for pars 57 Export a results table to a text file for parsing.
63 .TP 58 .TP
64 \fB-sync\fR 59 \fB-sync\fR
65 Sync the filesystems before starting the test. 60 Sync the filesystems before starting the test. This reduces the size of
66 the sys_sync call which happens in the suspend 61 the sys_sync call which happens in the suspend_prepare phase.
67 .TP 62 .TP
68 \fB-rs \fIenable/disable\fR 63 \fB-rs \fIenable/disable\fR
69 During test, enable/disable runtime suspend fo 64 During test, enable/disable runtime suspend for all devices. The test is delayed
70 by 5 seconds to allow runtime suspend changes 65 by 5 seconds to allow runtime suspend changes to occur. The settings are restored
71 after the test is complete. 66 after the test is complete.
72 .TP 67 .TP
73 \fB-display \fIon/off/standby/suspend\fR !! 68 \fB-display \fIon/off\fR
74 Switch the display to the requested mode for t !! 69 Turn the display on or off for the test using the xset command. This helps
75 This helps maintain the consistency of test da !! 70 maintain the consistecy of test data for better comparison.
76 .TP <<
77 \fB-wifi\fR <<
78 If a wifi connection is available, check that <<
79 the reconnect time in the total resume time ca <<
80 as resume failures. <<
81 .TP 71 .TP
82 \fB-wifitrace\fR !! 72 \fB-skiphtml\fR
83 Trace through the wifi reconnect time and incl !! 73 Run the test and capture the trace logs, but skip the timeline generation.
84 74
85 .SS "advanced" 75 .SS "advanced"
86 .TP 76 .TP
87 \fB-gzip\fR 77 \fB-gzip\fR
88 Gzip the trace and dmesg logs to save space. T 78 Gzip the trace and dmesg logs to save space. The tool can also read in gzipped
89 logs for processing. 79 logs for processing.
90 .TP 80 .TP
91 \fB-cmd \fIstr\fR 81 \fB-cmd \fIstr\fR
92 Run the timeline over a custom suspend command 82 Run the timeline over a custom suspend command, e.g. pm-suspend. By default
93 the tool forces suspend via /sys/power/state s 83 the tool forces suspend via /sys/power/state so this allows testing over
94 an OS's official suspend method. The output fi 84 an OS's official suspend method. The output file will change to
95 hostname_command.html and will autodetect whic 85 hostname_command.html and will autodetect which suspend mode was triggered.
96 .TP 86 .TP
97 \fB-filter \fI"d1,d2,..."\fR 87 \fB-filter \fI"d1,d2,..."\fR
98 Filter out all but these device callbacks. The 88 Filter out all but these device callbacks. These strings can be device names
99 or module names. e.g. 0000:00:02.0, ata5, i915 89 or module names. e.g. 0000:00:02.0, ata5, i915, usb, etc.
100 .TP 90 .TP
101 \fB-mindev \fIt\fR 91 \fB-mindev \fIt\fR
102 Discard all device callbacks shorter than \fIt 92 Discard all device callbacks shorter than \fIt\fR milliseconds (default: 0.0).
103 This reduces the html file size as there can b 93 This reduces the html file size as there can be many tiny callbacks which are barely
104 visible. The value is a float: e.g. 0.001 repr 94 visible. The value is a float: e.g. 0.001 represents 1 us.
105 .TP 95 .TP
106 \fB-proc\fR 96 \fB-proc\fR
107 Add usermode process info into the timeline (d 97 Add usermode process info into the timeline (default: disabled).
108 .TP 98 .TP
109 \fB-dev\fR 99 \fB-dev\fR
110 Add kernel source calls and threads to the tim 100 Add kernel source calls and threads to the timeline (default: disabled).
111 .TP 101 .TP
112 \fB-x2\fR 102 \fB-x2\fR
113 Run two suspend/resumes back to back (default: 103 Run two suspend/resumes back to back (default: disabled).
114 .TP 104 .TP
115 \fB-x2delay \fIt\fR 105 \fB-x2delay \fIt\fR
116 Include \fIt\fR ms delay between multiple test 106 Include \fIt\fR ms delay between multiple test runs (default: 0 ms).
117 .TP 107 .TP
118 \fB-predelay \fIt\fR 108 \fB-predelay \fIt\fR
119 Include \fIt\fR ms delay before 1st suspend (d 109 Include \fIt\fR ms delay before 1st suspend (default: 0 ms).
120 .TP 110 .TP
121 \fB-postdelay \fIt\fR 111 \fB-postdelay \fIt\fR
122 Include \fIt\fR ms delay after last resume (de 112 Include \fIt\fR ms delay after last resume (default: 0 ms).
123 .TP 113 .TP
124 \fB-multi \fIn d\fR 114 \fB-multi \fIn d\fR
125 Used for endurance testing. If \fIn\fR is enti !! 115 Execute \fIn\fR consecutive tests at \fId\fR seconds intervals. The outputs will
126 Execute \fIn\fR consecutive tests at \fId\fR s !! 116 be created in a new subdirectory with a summary page: suspend-xN-{date}-{time}.
127 If \fIn\fR is an integer followed by a "d", "h <<
128 Execute tests continuously over \fIn\fR days, <<
129 The outputs will be created in a new subdirect <<
130 for duration: suspend-{date}-{time}-Nm. When t <<
131 command is called automatically to create summ <<
132 use \fI-skiphtml\fR). \fI-skiphtml\fR will spe <<
133 or summary html files. You can then run the to <<
134 and \fI-genhtml\fR to create the timelines. <<
135 .TP <<
136 \fB-maxfail \fIn\fR <<
137 Abort a -multi run after \fIn\fR consecutive f <<
138 .TP <<
139 \fB-skiphtml\fR <<
140 Run the test and capture the trace logs, but s <<
141 You can generate the html timelines later with <<
142 by running \fI-summary\fR and \fI-genhtml\fR. <<
143 117
144 .SS "ftrace debug" 118 .SS "ftrace debug"
145 .TP 119 .TP
146 \fB-f\fR 120 \fB-f\fR
147 Use ftrace to create device callgraphs (defaul 121 Use ftrace to create device callgraphs (default: disabled). This can produce
148 very large outputs, i.e. 10MB - 100MB. 122 very large outputs, i.e. 10MB - 100MB.
149 .TP 123 .TP
150 \fB-ftop\fR <<
151 Use ftrace on the top level call: "suspend_dev <<
152 This option implies -f and creates a single ca <<
153 .TP <<
154 \fB-maxdepth \fIlevel\fR 124 \fB-maxdepth \fIlevel\fR
155 limit the callgraph trace depth to \fIlevel\fR 125 limit the callgraph trace depth to \fIlevel\fR (default: 0=all). This is
156 the best way to limit the output size when usi 126 the best way to limit the output size when using callgraphs via -f.
157 .TP 127 .TP
158 \fB-expandcg\fR 128 \fB-expandcg\fR
159 pre-expand the callgraph data in the html outp 129 pre-expand the callgraph data in the html output (default: disabled)
160 .TP 130 .TP
161 \fB-fadd \fIfile\fR 131 \fB-fadd \fIfile\fR
162 Add functions to be graphed in the timeline fr 132 Add functions to be graphed in the timeline from a list in a text file
163 .TP 133 .TP
164 \fB-mincg \fIt\fR 134 \fB-mincg \fIt\fR
165 Discard all callgraphs shorter than \fIt\fR mi 135 Discard all callgraphs shorter than \fIt\fR milliseconds (default: 0.0).
166 This reduces the html file size as there can b 136 This reduces the html file size as there can be many tiny callgraphs
167 which are barely visible in the timeline. 137 which are barely visible in the timeline.
168 The value is a float: e.g. 0.001 represents 1 138 The value is a float: e.g. 0.001 represents 1 us.
169 .TP 139 .TP
170 \fB-cgfilter \fI"func1,func2,..."\fR 140 \fB-cgfilter \fI"func1,func2,..."\fR
171 Reduce callgraph output in the timeline by lim !! 141 Reduce callgraph output in the timeline by limiting it to a list of calls. The
172 argument can be a single device name or a comm !! 142 argument can be a single function name or a comma delimited list.
173 (default: none) 143 (default: none)
174 .TP 144 .TP
175 \fB-cgskip \fIfile\fR 145 \fB-cgskip \fIfile\fR
176 Reduce callgraph timeline size by skipping ove 146 Reduce callgraph timeline size by skipping over uninteresting functions
177 in the trace, e.g. printk or console_unlock. T 147 in the trace, e.g. printk or console_unlock. The functions listed
178 in this file will show up as empty leaves in t 148 in this file will show up as empty leaves in the callgraph with only the start/end
179 times displayed. cgskip.txt is used automatica 149 times displayed. cgskip.txt is used automatically if found in the path, so
180 use "off" to disable completely (default: cgsk 150 use "off" to disable completely (default: cgskip.txt)
181 .TP 151 .TP
182 \fB-cgphase \fIp\fR 152 \fB-cgphase \fIp\fR
183 Only show callgraph data for phase \fIp\fR (e. 153 Only show callgraph data for phase \fIp\fR (e.g. suspend_late).
184 .TP 154 .TP
185 \fB-cgtest \fIn\fR 155 \fB-cgtest \fIn\fR
186 In an x2 run, only show callgraph data for tes 156 In an x2 run, only show callgraph data for test \fIn\fR (e.g. 0 or 1).
187 .TP 157 .TP
188 \fB-timeprec \fIn\fR 158 \fB-timeprec \fIn\fR
189 Number of significant digits in timestamps (0: 159 Number of significant digits in timestamps (0:S, [3:ms], 6:us).
190 .TP 160 .TP
191 \fB-bufsize \fIN\fR 161 \fB-bufsize \fIN\fR
192 Set trace buffer size to N kilo-bytes (default 162 Set trace buffer size to N kilo-bytes (default: all of free memory up to 3GB)
193 163
194 .SH COMMANDS 164 .SH COMMANDS
195 .TP 165 .TP
196 \fB-summary \fIindir\fR 166 \fB-summary \fIindir\fR
197 Create a set of summary pages for all tests in !! 167 Create a summary page of all tests in \fIindir\fR. Creates summary.html
198 Creates summary.html, summary-issues.html, and !! 168 in the current folder. The output page is a table of tests with
199 summary.html is a table of tests with relevant !! 169 suspend and resume values sorted by suspend mode, host, and kernel.
200 and links to the test html files. It identifie !! 170 Includes test averages by mode and links to the test html files.
201 suspend and resume times for you with highligh <<
202 summary-issues.html is a list of kernel issues <<
203 summary-devices.html is a list of devices and <<
204 <<
205 Use \fI-genhtml\fR to regenerate any tests wit <<
206 .TP <<
207 \fB-genhtml\fR <<
208 Used with \fI-summary\fR to regenerate any mis <<
209 dmesg and ftrace logs. This will require a sig <<
210 are thousands of tests. <<
211 .TP 171 .TP
212 \fB-modes\fR 172 \fB-modes\fR
213 List available suspend modes. 173 List available suspend modes.
214 .TP 174 .TP
215 \fB-status\fR 175 \fB-status\fR
216 Test to see if the system is able to run this 176 Test to see if the system is able to run this tool. Use this along
217 with any options you intend to use to see if t 177 with any options you intend to use to see if they will work.
218 .TP 178 .TP
219 \fB-fpdt\fR 179 \fB-fpdt\fR
220 Print out the contents of the ACPI Firmware Pe 180 Print out the contents of the ACPI Firmware Performance Data Table.
221 .TP 181 .TP
222 \fB-wificheck\fR <<
223 Print out wifi status and connection details. <<
224 .TP <<
225 \fB-xon/-xoff/-xstandby/-xsuspend\fR <<
226 Test xset by attempting to switch the display <<
227 is the same command which will be issued by \f <<
228 .TP <<
229 \fB-xstat\fR <<
230 Get the current DPMS display mode. <<
231 .TP <<
232 \fB-sysinfo\fR 182 \fB-sysinfo\fR
233 Print out system info extracted from BIOS. Rea 183 Print out system info extracted from BIOS. Reads /dev/mem directly instead of going through dmidecode.
234 .TP 184 .TP
235 \fB-devinfo\fR 185 \fB-devinfo\fR
236 Print out the pm settings of all devices which 186 Print out the pm settings of all devices which support runtime suspend.
237 .TP 187 .TP
238 \fB-cmdinfo\fR <<
239 Print out all the platform data collected from <<
240 .TP <<
241 \fB-flist\fR 188 \fB-flist\fR
242 Print the list of ftrace functions currently b 189 Print the list of ftrace functions currently being captured. Functions
243 that are not available as symbols in the curre 190 that are not available as symbols in the current kernel are shown in red.
244 By default, the tool traces a list of importan 191 By default, the tool traces a list of important suspend/resume functions
245 in order to better fill out the timeline. If t 192 in order to better fill out the timeline. If the user has added their own
246 with -fadd they will also be checked. 193 with -fadd they will also be checked.
247 .TP 194 .TP
248 \fB-flistall\fR 195 \fB-flistall\fR
249 Print all ftrace functions capable of being ca 196 Print all ftrace functions capable of being captured. These are all the
250 possible values you can add to trace via the - 197 possible values you can add to trace via the -fadd argument.
251 .SS "rebuild" 198 .SS "rebuild"
252 .TP 199 .TP
253 \fB-ftrace \fIfile\fR 200 \fB-ftrace \fIfile\fR
254 Create HTML output from an existing ftrace fil 201 Create HTML output from an existing ftrace file.
255 .TP 202 .TP
256 \fB-dmesg \fIfile\fR 203 \fB-dmesg \fIfile\fR
257 Create HTML output from an existing dmesg file 204 Create HTML output from an existing dmesg file.
258 205
259 .SH EXAMPLES 206 .SH EXAMPLES
260 .SS "simple commands" 207 .SS "simple commands"
261 Check which suspend modes are currently suppor 208 Check which suspend modes are currently supported.
262 .IP 209 .IP
263 \f(CW$ sleepgraph -modes\fR 210 \f(CW$ sleepgraph -modes\fR
264 .PP 211 .PP
265 Read the Firmware Performance Data Table (FPDT 212 Read the Firmware Performance Data Table (FPDT)
266 .IP 213 .IP
267 \f(CW$ sudo sleepgraph -fpdt\fR 214 \f(CW$ sudo sleepgraph -fpdt\fR
268 .PP 215 .PP
269 Print out the current USB power topology 216 Print out the current USB power topology
270 .IP 217 .IP
271 \f(CW$ sleepgraph -usbtopo 218 \f(CW$ sleepgraph -usbtopo
272 .PP 219 .PP
273 Verify that you can run a command with a set o 220 Verify that you can run a command with a set of arguments
274 .IP 221 .IP
275 \f(CW$ sudo sleepgraph -f -rtcwake 30 -status 222 \f(CW$ sudo sleepgraph -f -rtcwake 30 -status
276 .PP 223 .PP
277 Generate a summary of all timelines in a parti 224 Generate a summary of all timelines in a particular folder.
278 .IP 225 .IP
279 \f(CW$ sleepgraph -summary ~/workspace/myresul 226 \f(CW$ sleepgraph -summary ~/workspace/myresults/\fR
280 .PP 227 .PP
281 228
282 .SS "capturing basic timelines" 229 .SS "capturing basic timelines"
283 Execute a mem suspend with a 15 second wakeup. 230 Execute a mem suspend with a 15 second wakeup. Include the logs in the html.
284 .IP 231 .IP
285 \f(CW$ sudo sleepgraph -rtcwake 15 -addlogs\fR 232 \f(CW$ sudo sleepgraph -rtcwake 15 -addlogs\fR
286 .PP 233 .PP
287 Execute a standby with a 15 second wakeup. Cha 234 Execute a standby with a 15 second wakeup. Change the output folder name.
288 .IP 235 .IP
289 \f(CW$ sudo sleepgraph -m standby -rtcwake 15 236 \f(CW$ sudo sleepgraph -m standby -rtcwake 15 -o "standby-{host}-{date}-{time}"\fR
290 .PP 237 .PP
291 Execute a freeze with no wakeup (require keypr 238 Execute a freeze with no wakeup (require keypress). Change output folder name.
292 .IP 239 .IP
293 \f(CW$ sudo sleepgraph -m freeze -rtcwake off 240 \f(CW$ sudo sleepgraph -m freeze -rtcwake off -o "freeze-{hostname}-{date}-{time}"\fR
294 .PP 241 .PP
295 242
296 .SS "capturing advanced timelines" 243 .SS "capturing advanced timelines"
297 Execute a suspend & include dev mode source ca 244 Execute a suspend & include dev mode source calls, limit callbacks to 5ms or larger.
298 .IP 245 .IP
299 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -dev 246 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -dev -mindev 5\fR
300 .PP 247 .PP
301 Run two suspends back to back, include a 500ms 248 Run two suspends back to back, include a 500ms delay before, after, and in between runs.
302 .IP 249 .IP
303 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -x2 250 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -x2 -predelay 500 -x2delay 500 -postdelay 500\fR
304 .PP 251 .PP
305 Execute a suspend using a custom command. <<
306 .IP <<
307 \f(CW$ sudo sleepgraph -cmd "echo mem > /sys/p <<
308 .PP <<
309 <<
310 .SS "endurance testing using -multi" <<
311 .PP <<
312 Do a batch run of 10 freezes with 30 seconds d 252 Do a batch run of 10 freezes with 30 seconds delay between runs.
313 .IP 253 .IP
314 \f(CW$ sudo sleepgraph -m freeze -rtcwake 15 - 254 \f(CW$ sudo sleepgraph -m freeze -rtcwake 15 -multi 10 30\fR
315 .PP 255 .PP
316 Do a batch run of freezes for 24 hours. !! 256 Execute a suspend using a custom command.
317 .IP 257 .IP
318 \f(CW$ sudo sleepgraph -m freeze -rtcwake 15 - !! 258 \f(CW$ sudo sleepgraph -cmd "echo mem > /sys/power/state" -rtcwake 15\fR
>> 259 .PP
319 260
320 .SS "adding callgraph data" 261 .SS "adding callgraph data"
321 Add device callgraphs. Limit the trace depth a 262 Add device callgraphs. Limit the trace depth and only show callgraphs 10ms or larger.
322 .IP 263 .IP
323 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f - 264 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f -maxdepth 5 -mincg 10\fR
324 .PP 265 .PP
325 Capture a full callgraph across all suspend, t 266 Capture a full callgraph across all suspend, then filter the html by a single phase.
326 .IP 267 .IP
327 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f\f 268 \f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f\fR
328 .IP 269 .IP
329 \f(CW$ sleepgraph -dmesg host_mem_dmesg.txt -f 270 \f(CW$ sleepgraph -dmesg host_mem_dmesg.txt -ftrace host_mem_ftrace.txt -f -cgphase resume
330 .PP 271 .PP
331 272
332 .SS "rebuild timeline from logs" 273 .SS "rebuild timeline from logs"
333 .PP 274 .PP
334 Rebuild the html from a previous run's logs, u 275 Rebuild the html from a previous run's logs, using the same options.
335 .IP 276 .IP
336 \f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftr 277 \f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftrace.txt -callgraph\fR
337 .PP 278 .PP
338 Rebuild the html with different options. 279 Rebuild the html with different options.
339 .IP 280 .IP
340 \f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftr 281 \f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftrace.txt -addlogs -srgap\fR
341 282
342 .SH "SEE ALSO" 283 .SH "SEE ALSO"
343 dmesg(1) 284 dmesg(1)
344 .PP 285 .PP
345 .SH AUTHOR 286 .SH AUTHOR
346 .nf 287 .nf
347 Written by Todd Brandt <todd.e.brandt@linux.int 288 Written by Todd Brandt <todd.e.brandt@linux.intel.com>
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