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2026-09-19 - 12:30
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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
Characteristics of the 100 highest latencies:
System rack7slot1.osadl.org (updated Sat Sep 19, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4817213069,21sleep30-21swapper/319:07:263
1974521300,0sleep227185-21stress22:05:132
4905211452,57sleep00-21swapper/019:08:320
4912211353,20sleep20-21swapper/219:08:382
4653210950,20sleep10-21swapper/119:05:271
103912450,1sleep027183-21stress21:44:150
68512440,1sleep027183-21stress22:46:200
5129994115,23cyclictest0-21swapper/323:50:343
512999403,34cyclictest27183-21stress23:38:213
512999403,34cyclictest27183-21stress23:38:203
5127994010,27cyclictest0-21swapper/100:31:551
5126994010,23cyclictest0-21swapper/019:25:180
512999393,33cyclictest27185-21stress00:30:333
5127993915,14cyclictest0-21swapper/121:53:321
5127993911,25cyclictest0-21swapper/122:24:011
512699395,18cyclictest0-21swapper/020:25:370
5126993919,13cyclictest0-21swapper/021:00:410
5126993910,19cyclictest0-21swapper/019:11:250
512999383,32cyclictest27183-21stress23:30:243
512999383,32cyclictest27183-21stress23:16:223
512999383,32cyclictest27183-21stress22:20:343
512999382,33cyclictest27185-21stress00:35:243
5129993815,21cyclictest0-21swapper/321:31:233
5129993813,23cyclictest0-21swapper/322:05:263
5127993812,23cyclictest0-21swapper/123:30:081
5127993811,24cyclictest0-21swapper/122:55:311
5127993810,18cyclictest0-21swapper/123:08:421
5127993810,18cyclictest0-21swapper/123:08:421
301242385,14sleep20-21swapper/220:01:472
512999373,31cyclictest27183-21stress21:27:533
512999373,31cyclictest27183-21stress00:15:313
512999372,32cyclictest27185-21stress23:10:143
512999372,32cyclictest27183-21stress21:10:303
512999372,32cyclictest27183-21stress21:10:303
5129993717,18cyclictest0-21swapper/322:25:333
5129993717,18cyclictest0-21swapper/321:40:223
5129993715,20cyclictest0-21swapper/323:05:133
5129993715,20cyclictest0-21swapper/323:05:123
5128993711,23cyclictest0-21swapper/200:10:242
5128993711,23cyclictest0-21swapper/200:10:232
512799379,19cyclictest0-21swapper/100:29:361
512799378,27cyclictest0-21swapper/123:28:011
5127993711,23cyclictest0-21swapper/123:46:521
5127993711,23cyclictest0-21swapper/122:41:181
5127993711,23cyclictest0-21swapper/122:41:181
5127993711,23cyclictest0-21swapper/122:02:231
5127993711,16cyclictest0-21swapper/122:30:371
512699379,21cyclictest0-21swapper/020:00:120
5126993711,21cyclictest0-21swapper/019:45:220
5126993710,21cyclictest0-21swapper/020:40:220
246232375,14sleep10-21swapper/121:01:531
179732375,14sleep20-21swapper/220:46:502
77712365,13sleep20-21swapper/220:25:132
512999363,30cyclictest27185-21stress23:25:223
512999363,30cyclictest27185-21stress22:55:163
512999363,30cyclictest27185-21stress21:20:023
512999363,30cyclictest27183-21stress22:10:123
512999363,30cyclictest27183-21stress22:10:123
512999362,31cyclictest27183-21stress23:40:293
512999362,31cyclictest27183-21stress23:40:293
512999362,31cyclictest27183-21stress00:10:143
512999362,31cyclictest27183-21stress00:10:143
512999362,31cyclictest27183-21stress00:07:473
5129993618,16cyclictest0-21swapper/322:15:243
5129993615,19cyclictest0-21swapper/322:35:173
5129993615,19cyclictest0-21swapper/321:48:413
5129993615,18cyclictest0-21swapper/321:55:033
5129993614,19cyclictest0-21swapper/321:15:203
5129993614,19cyclictest0-21swapper/321:15:203
5128993611,22cyclictest0-21swapper/222:00:192
512799366,24cyclictest0-21swapper/120:15:061
512799366,24cyclictest0-21swapper/120:15:061
5127993615,19cyclictest0-21swapper/123:55:451
5127993614,19cyclictest0-21swapper/122:11:241
5127993614,19cyclictest0-21swapper/122:11:241
5127993613,21cyclictest0-21swapper/122:35:101
5126993611,16cyclictest0-21swapper/019:38:560
5126993610,16cyclictest0-21swapper/020:22:560
267482365,13sleep20-21swapper/221:05:352
256612365,10sleep00-21swapper/019:51:360
23942365,13sleep00-21swapper/020:13:480
123042365,10sleep20-21swapper/219:21:542
114152365,14sleep20-21swapper/220:33:472
102272365,14sleep20-21swapper/219:18:322
512999353,30cyclictest27185-21stress23:20:203
512999353,30cyclictest18322-21sed00:25:263
512999353,29cyclictest77671munin-node19:15:013
512999353,29cyclictest23974-21/usr/sbin/munin19:50:213
512999352,31cyclictest27185-21stress22:50:033
512999352,30cyclictest30691-21/usr/sbin/munin20:05:173
512999352,30cyclictest27185-21stress23:45:273
512999352,30cyclictest27185-21stress23:00:323
512999352,30cyclictest27185-21stress23:00:323
512999352,30cyclictest27185-21stress22:45:133
5129993517,16cyclictest0-21swapper/321:50:233
512999351,31cyclictest27185-21stress00:20:223
512799357,18cyclictest0-21swapper/122:05:211
512799355,23cyclictest0-21swapper/119:10:471
5127993515,18cyclictest0-21swapper/100:00:071
512699359,17cyclictest0-21swapper/020:16:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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