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2026-03-12 - 12:01

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 Thu Mar 12, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20829212397,19sleep00-21swapper/019:05:150
21749211395,13sleep30-21swapper/319:06:343
21819210998,6sleep10-21swapper/119:07:281
21307210992,12sleep20-21swapper/219:05:572
27742750,1sleep20-21swapper/222:10:442
324452700,0sleep30-21swapper/323:12:543
146402670,1sleep30-21swapper/321:18:153
99342260,0sleep1221ktimersoftd/122:50:151
53282220,0sleep10-21swapper/121:40:491
2204199171,14cyclictest18211-21ssh22:26:011
2204099173,2cyclictest101ktimersoftd/022:36:010
2204199161,3cyclictest0-21swapper/121:21:021
2204199161,2cyclictest28010-21apt-get20:45:051
2204199161,13cyclictest5848-21diskmemload21:45:131
2204199161,13cyclictest0-21swapper/123:00:111
2204199160,14cyclictest5848-21diskmemload00:25:481
2204099161,13cyclictest7562-21iostat00:25:190
22042991510,3cyclictest8873-21munin-node2
2204299150,13cyclictest20854-21munin-run21:24:592
2204299150,13cyclictest0-21swapper/221:35:122
22041991512,2cyclictest0-21swapper/121:35:151
22041991512,2cyclictest0-21swapper/121:27:451
22041991512,2cyclictest0-21swapper/120:05:151
22041991511,3cyclictest21963-21turbostat20:34:551
2204199150,14cyclictest0-21swapper/123:16:451
2204199150,13cyclictest0-21swapper/122:02:271
22040991511,2cyclictest1938-21aten2.4_r3power21:00:100
2204099151,12cyclictest0-21swapper/021:15:500
22040991510,3cyclictest18782-21ssh22:59:550
2204099150,13cyclictest0-21swapper/022:10:150
2204099150,13cyclictest0-21swapper/022:00:180
137982150,0sleep00-21swapper/000:31:030
315562141,3sleep331679-21telnet22:40:123
277502140,3sleep20-21swapper/221:31:012
22043991411,2cyclictest1130-21kworker/u8:022:54:043
22043991411,2cyclictest0-21swapper/323:50:123
2204399140,12cyclictest6888-21kworker/u8:200:35:043
2204399140,12cyclictest0-21swapper/323:20:133
2204399140,12cyclictest0-21swapper/321:20:163
2204399140,12cyclictest0-21swapper/300:00:023
2204299141,2cyclictest21536-21apt-get23:35:112
22042991411,2cyclictest7583-21ssh00:25:182
22042991411,2cyclictest0-21swapper/219:41:012
2204299140,12cyclictest0-21swapper/223:51:412
2204299140,12cyclictest0-21swapper/222:35:032
2204299140,12cyclictest0-21swapper/221:52:132
2204299140,12cyclictest0-21swapper/221:19:012
2204299140,12cyclictest0-21swapper/220:50:112
2204299140,12cyclictest0-21swapper/220:15:012
22041991411,2cyclictest0-21swapper/123:48:051
22041991411,2cyclictest0-21swapper/123:35:131
22041991411,2cyclictest0-21swapper/123:06:251
22041991411,2cyclictest0-21swapper/122:44:551
22041991411,2cyclictest0-21swapper/122:08:351
2204199140,2cyclictest0-21swapper/122:30:251
2204199140,2cyclictest0-21swapper/100:08:451
2204199140,1cyclictest0-21swapper/121:16:351
2204199140,13cyclictest0-21swapper/123:51:251
2204199140,13cyclictest0-21swapper/123:41:251
2204199140,13cyclictest0-21swapper/123:27:351
2204199140,13cyclictest0-21swapper/122:15:551
2204199140,13cyclictest0-21swapper/120:11:051
2204199140,13cyclictest0-21swapper/100:37:361
2204199140,12cyclictest4720-21fschecks_count22:45:151
2204199140,12cyclictest2842-21cut22:10:491
2204199140,12cyclictest0-21swapper/100:00:151
2204099141,3cyclictest25271-21ssh23:38:400
22040991411,2cyclictest0-21swapper/023:02:490
22040991411,2cyclictest0-21swapper/021:56:400
2204099140,2cyclictest0-21swapper/022:49:100
2204099140,2cyclictest0-21swapper/022:42:090
2204099140,2cyclictest0-21swapper/022:23:260
2204099140,13cyclictest3450-21kworker/u8:120:17:050
2204099140,13cyclictest3450-21kworker/u8:120:17:040
2204099140,13cyclictest24078-21ssh22:31:490
2204099140,13cyclictest0-21swapper/023:51:390
2204099140,13cyclictest0-21swapper/000:01:300
2204099140,12cyclictest0-21swapper/022:07:190
2204099140,12cyclictest0-21swapper/021:38:520
2204099140,12cyclictest0-21swapper/021:26:300
2204099140,12cyclictest0-21swapper/019:50:160
211592140,2sleep00-21swapper/000:39:380
195472140,2sleep00-21swapper/021:23:050
81872130,2sleep10-21swapper/123:20:351
57762130,2sleep35848-21diskmemload21:41:053
326642130,9sleep00-21swapper/020:55:120
22043991310,2cyclictest0-21swapper/323:34:123
22043991310,2cyclictest0-21swapper/323:01:333
22043991310,2cyclictest0-21swapper/322:17:593
22043991310,2cyclictest0-21swapper/321:11:013
2204399130,2cyclictest5848-21diskmemload00:30:113
2204399130,2cyclictest0-21swapper/321:56:433
2204399130,2cyclictest0-21swapper/319:30:123
2204399130,12cyclictest0-21swapper/323:45:203
2204399130,12cyclictest0-21swapper/321:50:133
2204399130,12cyclictest0-21swapper/320:20:133
2204399130,12cyclictest0-21swapper/320:20:133
2204399130,12cyclictest0-21swapper/300:11:023
2204399130,11cyclictest630-21ssh22:09:243
2204399130,11cyclictest30573-21kworker/u8:223:56:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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