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2025-11-24 - 04:51

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 Mon Nov 24, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8365211894,19sleep00-21swapper/019:08:240
6699211794,16sleep20-21swapper/219:05:092
8426211694,16sleep10-21swapper/119:09:131
8476210383,15sleep30-21swapper/319:09:513
188252740,1sleep00-21swapper/023:55:170
312462680,0sleep20-21swapper/223:00:112
8519993717,18cyclictest0-21swapper/223:45:102
100972230,0sleep10-21swapper/121:28:301
851999221,19cyclictest0-21swapper/221:00:132
289742220,1sleep10-21swapper/123:31:091
851999211,18cyclictest0-21swapper/221:45:122
320992210,1sleep10-21swapper/121:51:031
8520992017,2cyclictest10560-21kworker/u8:222:48:013
851699200,2cyclictest0-21swapper/019:35:110
8520991916,2cyclictest5494-21kworker/u8:022:33:053
8516991916,2cyclictest19740-21kworker/u8:200:01:040
8518991814,2cyclictest21-21rcuc/122:48:021
8516991815,2cyclictest771-21kworker/u8:123:20:020
8516991815,2cyclictest26548-21kworker/u8:223:07:050
8516991815,2cyclictest18970-21kworker/u8:122:36:050
851699180,16cyclictest0-21swapper/019:10:140
852099172,3cyclictest5119-21grep20:20:163
8516991714,2cyclictest771-21kworker/u8:123:15:040
8516991714,2cyclictest4004-21kworker/u8:100:08:050
8516991714,2cyclictest4004-21kworker/u8:100:08:040
8516991714,2cyclictest31230-21kworker/u8:200:38:050
8516991714,2cyclictest25782-21kworker/u8:123:32:060
8516991714,2cyclictest15241-21kworker/u8:223:50:040
851699171,2cyclictest0-21swapper/019:25:130
851699170,15cyclictest0-21swapper/023:10:390
852099161,3cyclictest25965-21python19:50:253
852099161,3cyclictest19873-21sensors00:30:243
8520991613,2cyclictest4004-21kworker/u8:123:53:053
8520991613,2cyclictest31877-21kworker/u8:121:55:053
8520991613,2cyclictest31877-21kworker/u8:121:55:043
8519991612,2cyclictest0-21swapper/200:15:162
851899161,13cyclictest15789-21ssh00:25:511
851899160,14cyclictest0-21swapper/122:14:111
851699161,3cyclictest32144-21grep23:35:140
8516991613,2cyclictest28525-21kworker/u8:220:29:050
8516991613,2cyclictest28525-21kworker/u8:220:14:050
8516991613,2cyclictest28525-21kworker/u8:220:08:050
8516991613,2cyclictest25643-21kworker/u8:021:57:050
8516991613,2cyclictest25643-21kworker/u8:021:57:040
8516991613,2cyclictest18774-21kworker/u8:221:49:050
8516991613,2cyclictest18259-21kworker/u8:021:03:050
8516991613,2cyclictest16828-21kworker/u8:119:54:040
851699160,11cyclictest0-21swapper/022:47:050
851699160,11cyclictest0-21swapper/022:10:040
270192160,1sleep30-21swapper/322:20:193
8520991512,2cyclictest25153-21kworker/u8:000:21:043
852099151,12cyclictest0-21swapper/321:40:153
8520991510,3cyclictest24636-21cat00:35:263
852099150,3cyclictest32222-21processes23:00:183
852099150,14cyclictest0-21swapper/322:42:093
852099150,14cyclictest0-21swapper/321:12:283
852099150,13cyclictest4753-21memory23:40:183
852099150,13cyclictest4541-21ssh21:22:163
852099150,13cyclictest0-21swapper/322:56:083
851999151,12cyclictest971-21seq23:35:482
851999150,13cyclictest0-21swapper/219:55:272
8518991512,2cyclictest0-21swapper/123:22:571
8518991512,2cyclictest0-21swapper/120:10:281
851899150,13cyclictest9190-21fschecks_count23:45:141
851899150,13cyclictest0-21swapper/122:17:161
851899150,13cyclictest0-21swapper/121:57:181
851899150,13cyclictest0-21swapper/121:57:181
8516991512,2cyclictest8709-21kworker/u8:120:49:050
8516991512,2cyclictest4556-21kworker/u8:020:31:050
8516991512,2cyclictest25643-21kworker/u8:021:53:050
8516991512,2cyclictest20850-21kworker/u8:221:22:060
8516991512,2cyclictest16828-21kworker/u8:119:55:050
8516991512,2cyclictest12809-21kworker/u8:019:21:050
851699150,10cyclictest0-21swapper/022:20:020
851699150,10cyclictest0-21swapper/020:37:050
8520991411,2cyclictest31230-21kworker/u8:200:25:053
8520991411,2cyclictest0-21swapper/322:11:383
8520991411,2cyclictest0-21swapper/322:05:393
8520991411,2cyclictest0-21swapper/321:50:523
852099140,2cyclictest0-21swapper/322:52:553
852099140,13cyclictest0-21swapper/322:37:283
852099140,13cyclictest0-21swapper/321:17:113
852099140,12cyclictest24660-21diskmemload23:29:473
852099140,12cyclictest0-21swapper/323:45:103
852099140,12cyclictest0-21swapper/321:37:523
851999149,3cyclictest0-21swapper/222:21:152
851999149,3cyclictest0-21swapper/220:15:042
851999142,10cyclictest0-21swapper/223:34:532
8519991411,2cyclictest24660-21diskmemload23:05:462
8519991411,2cyclictest0-21swapper/223:16:262
8519991411,2cyclictest0-21swapper/222:52:062
8519991411,2cyclictest0-21swapper/222:31:562
8519991411,2cyclictest0-21swapper/222:25:062
851999140,3cyclictest18019-21sh21:36:082
851999140,2cyclictest0-21swapper/223:25:252
851999140,1cyclictest0-21swapper/200:29:462
851999140,12cyclictest26568-21kworker/u8:100:38:532
851999140,12cyclictest24660-21diskmemload22:46:162
851999140,12cyclictest24660-21diskmemload21:52:442
851999140,12cyclictest0-21swapper/200:06:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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