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2026-05-16 - 19:29

OSADL QA Farm on Real-time of Mainline Linux

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

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 rackeslot3s.osadl.org (updated Sat May 16, 2026 12:45:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211364991291,125cyclictest0-21swapper/009:10:030
1211369998113,44cyclictest1282766-21rm11:25:031
1211364997326,12cyclictest1303222-21ssh12:07:390
1211369997237,31cyclictest1220014-21munin-plugin-st09:15:001
121136999722,12cyclictest131rcu_preempt11:55:021
1211373997142,8cyclictest1202348-21kworker/2:009:20:382
1211373997142,8cyclictest1202348-21kworker/2:009:20:382
1211373997042,8cyclictest1260930-21kworker/2:111:06:512
1211369996731,8cyclictest1212331-21sshd07:28:481
1211373996642,9cyclictest1260930-21kworker/2:111:25:592
1211364996625,12cyclictest12-21ksoftirqd/010:55:310
1211373996537,9cyclictest1260930-21kworker/2:111:54:152
1211364996519,21cyclictest12-21ksoftirqd/010:35:020
1211364996519,21cyclictest12-21ksoftirqd/010:35:020
121136499641,31cyclictest0-21swapper/010:23:080
1211373996339,7cyclictest1202348-21kworker/2:009:55:552
1211373996338,10cyclictest1234502-21kworker/2:210:03:182
1211369996330,9cyclictest23-21ksoftirqd/112:27:251
121136499631,43cyclictest0-21swapper/010:02:460
1211364996217,22cyclictest1234971-21ssh09:45:360
1211364996216,21cyclictest1238532-21ssh09:53:160
1211373996051,6cyclictest1234502-21kworker/2:210:25:242
1211364996031,12cyclictest1240557-21ssh09:57:230
1211364996025,19cyclictest1234499-21ssh09:45:010
1211364995930,13cyclictest1224240-21ssh09:23:330
1211364995930,13cyclictest1224240-21ssh09:23:330
1211364995915,27cyclictest16850irq/134-800000010:29:130
121136499591,48cyclictest1272954-21ssh11:05:020
1211364995830,25cyclictest1288915-21ssh11:37:590
1211364995829,13cyclictest1275204-21ssh11:09:370
1211364995829,13cyclictest1226249-21ssh09:27:430
1211364995829,13cyclictest1226249-21ssh09:27:430
1211364995828,15cyclictest1313118-21ssh12:28:070
1211364995824,24cyclictest1260398-21ssh10:38:520
121136499581,42cyclictest1309521-21ssh12:20:360
1211364995623,29cyclictest1297146-21date11:55:030
1211364995622,18cyclictest1316348-21ssh12:35:010
1211364995622,18cyclictest1316348-21ssh12:35:000
1211373995547,5cyclictest1234502-21kworker/2:210:36:072
1211373995546,6cyclictest1260930-21kworker/2:111:48:282
1211373995546,5cyclictest1260930-21kworker/2:112:20:012
121136499553,34cyclictest131rcu_preempt12:14:470
121136499552,43cyclictest1290066-21kworker/u8:411:49:460
1211364995513,38cyclictest12-21ksoftirqd/011:17:470
1211373995446,5cyclictest1260930-21kworker/2:112:38:412
1211373995446,5cyclictest1260930-21kworker/2:111:32:532
1211373995444,6cyclictest1234502-21kworker/2:210:32:102
1211373995444,6cyclictest1234502-21kworker/2:210:32:092
121137399544,25cyclictest1211800-21kworker/u8:108:25:032
1211373995423,8cyclictest1260930-21kworker/2:111:17:312
1211364995423,15cyclictest1282601-21ssh11:25:010
1211378995335,15cyclictest3467602-21systemd-journal11:30:003
1211378995335,13cyclictest3467602-21systemd-journal12:05:013
1211378995335,13cyclictest3467602-21systemd-journal12:05:013
1211373995345,5cyclictest1285542-21kworker/2:012:10:262
1211373995345,5cyclictest1234502-21kworker/2:210:12:462
1211373995345,5cyclictest1202348-21kworker/2:007:15:002
1211373995344,5cyclictest1234502-21kworker/2:210:56:532
1211373995336,7cyclictest1234502-21kworker/2:211:03:132
121136999531,29cyclictest1214930-21kworker/u8:408:40:021
121136499532,6cyclictest0-21swapper/007:20:000
1211364995326,12cyclictest1220326-21ssh09:15:200
1211364995324,14cyclictest1248289-21ssh10:13:460
1211364995322,19cyclictest12-21ksoftirqd/010:05:590
1211364995319,16cyclictest0-21swapper/010:15:440
121136499531,44cyclictest0-21swapper/011:44:550
121136499531,43cyclictest0-21swapper/011:12:000
1211373995244,5cyclictest1260930-21kworker/2:112:02:252
1211373995244,5cyclictest1260930-21kworker/2:112:02:242
1211373995244,5cyclictest1260930-21kworker/2:111:20:252
1211373995243,6cyclictest1260930-21kworker/2:112:31:372
1211373995243,6cyclictest1260930-21kworker/2:112:31:372
1211373995243,6cyclictest1234502-21kworker/2:210:08:222
1211373995243,6cyclictest1202348-21kworker/2:009:35:442
1211373995242,7cyclictest1234502-21kworker/2:210:23:142
1211364995226,12cyclictest1230408-21ssh09:36:130
1211364995225,12cyclictest1318222-21ssh12:38:480
1211364995218,23cyclictest12-21ksoftirqd/010:45:010
1211378995136,10cyclictest37-21ksoftirqd/310:15:003
1211378995117,24cyclictest37-21ksoftirqd/310:39:033
1211378995115,9cyclictest37-21ksoftirqd/309:20:003
1211373995144,4cyclictest1202348-21kworker/2:009:54:542
1211373995143,5cyclictest1260930-21kworker/2:112:22:322
1211373995143,5cyclictest1260930-21kworker/2:112:00:022
1211373995143,5cyclictest1260930-21kworker/2:111:13:382
1211373995143,5cyclictest1202348-21kworker/2:009:47:392
1211373995143,5cyclictest1202348-21kworker/2:009:33:462
1211373995143,5cyclictest1202348-21kworker/2:009:28:462
1211373995143,5cyclictest1202348-21kworker/2:009:28:452
1211373995142,5cyclictest1285542-21kworker/2:012:06:142
1211373995142,5cyclictest1202348-21kworker/2:008:15:022
1211378995036,10cyclictest1-21systemd08:15:013
1211373995043,4cyclictest1202348-21kworker/2:009:15:472
1211373995042,5cyclictest1260930-21kworker/2:111:40:402
1211373995042,5cyclictest1260930-21kworker/2:111:36:212
1211373995042,5cyclictest1202348-21kworker/2:009:42:242
1211373995042,5cyclictest1202348-21kworker/2:008:50:022
1211373995041,5cyclictest1260930-21kworker/2:112:27:032
1211373995041,5cyclictest1202348-21kworker/2:007:24:592
1211373995040,5cyclictest1202348-21kworker/2:007:45:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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