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2026-03-14 - 02:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Sat Mar 14, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1013212478,5sleep30-21swapper/319:08:103
32459211994,18sleep00-21swapper/019:05:150
961210695,6sleep20-21swapper/219:07:292
3066621050,1sleep030664-21ssh22:28:580
92329879,14sleep10-21swapper/119:07:001
62242740,0sleep30-21swapper/322:04:033
111882730,0sleep1221ktimersoftd/123:47:311
113942680,0sleep10-21swapper/122:41:171
158232230,0sleep20-21swapper/222:46:042
273942200,1sleep1221ktimersoftd/121:52:041
273942200,1sleep1221ktimersoftd/121:52:031
118999200,2cyclictest0-21swapper/122:50:111
160562190,1sleep3381ktimersoftd/322:14:053
119299182,2cyclictest0-21swapper/320:43:053
119299181,14cyclictest15091-21uptime23:51:023
119299173,12cyclictest0-21swapper/323:58:053
119299172,2cyclictest0-21swapper/323:28:053
119299172,13cyclictest0-21swapper/323:12:053
1192991714,2cyclictest17781-21kworker/u8:219:55:053
119299170,5cyclictest0-21swapper/322:26:053
119299170,4cyclictest0-21swapper/300:22:043
119299170,15cyclictest0-21swapper/323:18:523
119199171,14cyclictest17581-21latency_hist19:50:002
118999170,16cyclictest0-21swapper/119:42:051
118999170,13cyclictest0-21swapper/100:12:041
118999170,12cyclictest0-21swapper/100:02:051
150842160,0sleep00-21swapper/023:19:050
119299162,2cyclictest0-21swapper/322:40:053
119299161,3cyclictest0-21swapper/300:35:073
1192991613,2cyclictest29835-21kworker/u8:120:30:053
119299161,2cyclictest0-21swapper/321:50:043
119299161,2cyclictest0-21swapper/321:50:043
119299161,13cyclictest1871-21fschecks_time23:05:143
119299160,14cyclictest0-21swapper/321:23:053
118999160,3cyclictest17793-21latency_hist23:55:011
118999160,15cyclictest0-21swapper/123:04:061
118999160,14cyclictest0-21swapper/121:05:091
118999160,12cyclictest0-21swapper/100:26:051
118999160,11cyclictest0-21swapper/122:59:041
118999160,11cyclictest0-21swapper/100:31:041
118699160,14cyclictest16233-21hddtemp_smartct21:05:110
119299153,2cyclictest0-21swapper/323:02:043
119299152,2cyclictest26627-21ssh21:19:043
119299152,2cyclictest0-21swapper/321:26:043
119299152,2cyclictest0-21swapper/320:38:043
119299151,2cyclictest0-21swapper/300:04:053
1192991512,2cyclictest8664-21kworker/u8:122:07:053
1192991512,2cyclictest6368-21kworker/u8:123:47:053
1192991512,2cyclictest25925-21kworker/u8:220:18:053
1192991512,2cyclictest15352-21kworker/u8:019:47:043
1192991511,2cyclictest0-21swapper/319:16:003
119299150,13cyclictest0-21swapper/300:12:533
119199151,3cyclictest0-21swapper/219:35:132
119199151,12cyclictest0-21swapper/221:38:062
118999159,4cyclictest0-21swapper/100:09:411
118999151,12cyclictest27903-21aten2.4_r3power20:15:111
118999150,2cyclictest0-21swapper/100:18:021
118999150,11cyclictest0-21swapper/122:48:051
118999150,11cyclictest0-21swapper/120:02:041
118699150,13cyclictest20292-21ssh00:30:130
292822140,2sleep00-21swapper/021:54:560
292822140,2sleep00-21swapper/021:54:550
274662140,2sleep00-21swapper/022:58:240
119299149,3cyclictest7558-21sh00:16:323
119299142,2cyclictest0-21swapper/323:35:053
119299142,2cyclictest0-21swapper/321:47:053
119299141,7cyclictest0-21swapper/320:12:043
119299141,2cyclictest0-21swapper/319:44:053
1192991411,2cyclictest9211-21kworker/u8:221:04:043
119299140,2cyclictest0-21swapper/323:31:353
119299140,2cyclictest0-21swapper/322:32:053
119299140,2cyclictest0-21swapper/300:05:223
119299140,13cyclictest0-21swapper/319:27:053
119299140,12cyclictest0-21swapper/323:40:423
119299140,12cyclictest0-21swapper/322:46:523
119299140,12cyclictest0-21swapper/321:55:413
119299140,12cyclictest0-21swapper/321:10:523
1191991411,2cyclictest17457-21diskmemload22:52:342
1191991411,2cyclictest0-21swapper/222:05:282
1191991411,2cyclictest0-21swapper/221:21:242
1191991411,2cyclictest0-21swapper/220:20:102
1191991411,2cyclictest0-21swapper/220:00:092
1191991411,2cyclictest0-21swapper/219:20:152
119199141,11cyclictest6511-21ssh21:30:452
119199140,2cyclictest0-21swapper/222:26:262
119199140,13cyclictest0-21swapper/223:52:292
119199140,13cyclictest0-21swapper/222:23:082
119199140,12cyclictest0-21swapper/223:30:122
1189991411,2cyclictest8664-21kworker/u8:122:06:051
1189991411,2cyclictest17457-21diskmemload21:38:281
1189991411,2cyclictest0-21swapper/123:18:211
1189991411,2cyclictest0-21swapper/122:32:271
1189991411,2cyclictest0-21swapper/100:21:481
118999140,9cyclictest0-21swapper/122:20:051
118999140,2cyclictest0-21swapper/123:05:381
118999140,2cyclictest0-21swapper/121:42:041
118999140,2cyclictest0-21swapper/121:15:271
118999140,13cyclictest0-21swapper/123:14:061
118999140,12cyclictest4928-21grep21:30:011
118999140,12cyclictest24622-21ntpdc20:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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