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2025-05-09 - 05:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot7s.osadl.org (updated Fri May 09, 2025 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294402722240,8sleep20-21swapper/219:05:242
295699521000,7sleep00-21swapper/019:40:270
30000642970,9sleep11753-21gnome-shell21:45:181
162399900,78rtkit-daemon0-21swapper/319:05:483
30416472870,4sleep30-21swapper/323:40:303
162399820,10rtkit-daemon1753-21gnome-shell22:37:043
162399810,10rtkit-daemon1622-21rtkit-daemon19:50:432
162399810,10rtkit-daemon1622-21rtkit-daemon19:50:432
30411762800,6sleep10-21swapper/123:40:211
29792742800,5sleep2331rcuc/220:45:172
162399790,6rtkit-daemon2197014-21PK-Backend22:05:073
162399790,6rtkit-daemon2197014-21PK-Backend22:05:073
162399770,7rtkit-daemon2197014-21PK-Backend21:46:493
162399770,6rtkit-daemon0-21swapper/320:21:193
162399770,5rtkit-daemon0-21swapper/322:20:143
162399760,6rtkit-daemon2197014-21PK-Backend23:15:543
162399740,6rtkit-daemon0-21swapper/320:09:573
294452826948,14sleep00-21swapper/019:09:000
294395426844,15sleep10-21swapper/119:05:241
30572362660,5chrt0-21swapper/000:25:310
162399610,9rtkit-daemon1622-21rtkit-daemon19:43:293
162399580,9rtkit-daemon1622-21rtkit-daemon19:46:222
162399580,8rtkit-daemon1622-21rtkit-daemon19:17:313
29952212570,5sleep22197014-21PK-Backend21:30:252
2944771995721,11cyclictest42-21ksoftirqd/319:20:293
2944771995716,11cyclictest1-21systemd20:05:013
2944771995716,10cyclictest2977774-21wc20:40:223
2944771995716,10cyclictest2977774-21wc20:40:213
162399570,9rtkit-daemon1622-21rtkit-daemon23:10:240
2944771995611,40cyclictest3038743-21cron23:35:013
2944771995611,40cyclictest3038743-21cron23:35:013
294477199552,27cyclictest1753-21gnome-shell23:06:363
294477199542,25cyclictest1753-21gnome-shell21:27:493
294477199542,25cyclictest0-21swapper/300:36:233
294477199532,26cyclictest1753-21gnome-shell00:07:313
294477199532,25cyclictest1753-21gnome-shell23:03:153
294477199532,25cyclictest1753-21gnome-shell20:16:203
2944771995319,8cyclictest1-21systemd19:40:013
2944771995319,13cyclictest2972068-21df20:25:173
2944771995317,7cyclictest2197014-21PK-Backend20:11:373
2944771995316,12cyclictest994-21lldpd23:14:043
29487812520,5sleep0161rcuc/019:20:030
294477199529,16cyclictest1753-21gnome-shell22:15:163
294477199529,16cyclictest1753-21gnome-shell22:12:423
294477199522,7cyclictest1753-21gnome-shell21:20:173
294477199522,7cyclictest1753-21gnome-shell21:20:173
294477199522,25cyclictest1753-21gnome-shell20:55:223
2944771995220,8cyclictest1753-21gnome-shell00:22:073
2944771995219,8cyclictest1753-21gnome-shell00:00:133
2944771995219,7cyclictest3005233-21cpu22:00:163
2944771995218,7cyclictest1069-21runrttasks22:25:533
2944771995218,7cyclictest1069-21runrttasks22:25:523
2944771995210,16cyclictest1753-21gnome-shell19:55:443
294476899522,10cyclictest34-21ksoftirqd/200:00:022
29530702510,16sleep342-21ksoftirqd/319:30:193
294477199519,17cyclictest1753-21gnome-shell20:47:323
294477199512,8cyclictest1753-21gnome-shell19:25:293
2944771995122,8cyclictest1753-21gnome-shell19:50:283
2944771995122,8cyclictest1753-21gnome-shell19:50:283
2944771995117,7cyclictest1069-21runrttasks21:17:473
294477199511,22cyclictest1753-21gnome-shell00:10:233
2944771995110,16cyclictest1753-21gnome-shell23:25:273
2944771995110,16cyclictest1753-21gnome-shell22:42:363
2944771995110,16cyclictest1753-21gnome-shell22:42:363
2944768995111,22cyclictest34-21ksoftirqd/223:55:022
2944761995115,10cyclictest13-21ksoftirqd/022:05:400
2944761995115,10cyclictest13-21ksoftirqd/022:05:400
162399510,37rtkit-daemon2980662-21cpu20:50:123
30335432500,11sleep03033568-21munin-run23:19:590
294477199509,16cyclictest1753-21gnome-shell22:46:163
294477199509,16cyclictest1753-21gnome-shell00:29:443
294477199502,22cyclictest1753-21gnome-shell00:32:533
294477199502,22cyclictest1753-21gnome-shell00:32:523
2944771995018,8cyclictest1753-21gnome-shell20:39:123
2944771995015,10cyclictest42-21ksoftirqd/321:03:163
294477199501,23cyclictest1753-21gnome-shell23:59:333
2944768995030,8cyclictest34-21ksoftirqd/220:39:382
294477199498,16cyclictest1753-21gnome-shell19:48:113
294477199491,7cyclictest30259112sleep322:58:443
2944771994917,7cyclictest2197014-21PK-Backend21:07:403
294477199491,22cyclictest1753-21gnome-shell23:37:483
2944768994927,8cyclictest34-21ksoftirqd/220:20:002
294477199489,16cyclictest1753-21gnome-shell00:18:183
294477199482,24cyclictest3043066-21memory23:45:243
294477199481,22cyclictest1753-21gnome-shell21:55:543
294476899486,9cyclictest34-21ksoftirqd/221:20:012
2944768994821,8cyclictest34-21ksoftirqd/223:00:002
294476899476,19cyclictest141rcu_preempt20:33:502
2944768994713,19cyclictest34-21ksoftirqd/200:35:002
2944768994713,19cyclictest34-21ksoftirqd/200:35:002
2944768994711,20cyclictest34-21ksoftirqd/223:15:032
162399470,36rtkit-daemon0-21swapper/200:29:132
294477199469,16cyclictest1753-21gnome-shell21:41:103
2944768994618,10cyclictest34-21ksoftirqd/223:15:232
294476199461,41cyclictest1622-21rtkit-daemon00:05:260
2944771994514,9cyclictest3017178-21sed22:35:003
294476899457,20cyclictest34-21ksoftirqd/222:50:012
294476899456,18cyclictest34-21ksoftirqd/219:20:282
2944768994534,8cyclictest34-21ksoftirqd/200:20:332
2944768994513,12cyclictest1753-21gnome-shell23:45:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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