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2026-01-02 - 02:55
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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 rackdslot1.osadl.org (updated Thu Jan 01, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
774321230,6sleep01676999cyclictest11:25:290
1677099831,80cyclictest16290-21kworker/1:107:45:281
1677099831,80cyclictest16290-21kworker/1:107:45:281
134491620,3ptp4l29212-21df08:45:140
134491600,4ptp4l0-21swapper/007:40:260
134491590,3ptp4l31301-21apt-get08:50:122
134491580,4ptp4l0-21swapper/110:55:531
134491580,3ptp4l0-21swapper/310:00:063
16771995720,5cyclictest33-21ksoftirqd/210:15:262
134491570,5ptp4l0-21swapper/107:09:221
134491570,3ptp4l0-21swapper/109:27:341
134491570,3ptp4l0-21swapper/108:20:461
134491570,2ptp4l0-21swapper/108:05:121
16771995625,5cyclictest33-21ksoftirqd/207:40:142
134491560,4ptp4l0-21swapper/108:35:181
134491560,3ptp4l0-21swapper/110:20:061
134491560,3ptp4l0-21swapper/110:20:061
134491560,3ptp4l0-21swapper/010:05:260
122402560,5sleep00-21swapper/010:25:280
16771995527,4cyclictest33-21ksoftirqd/210:52:212
16771995527,4cyclictest33-21ksoftirqd/210:52:212
16771995524,7cyclictest33-21ksoftirqd/211:50:152
16771995524,7cyclictest33-21ksoftirqd/211:50:152
16771995522,3cyclictest33-21ksoftirqd/211:40:292
16770995515,38cyclictest16290-21kworker/1:108:45:081
134491550,4ptp4l0-21swapper/008:34:250
134491550,3ptp4l0-21swapper/012:20:540
134491550,3ptp4l0-21swapper/007:15:230
16771995426,3cyclictest33-21ksoftirqd/207:50:202
16771995422,4cyclictest33-21ksoftirqd/207:10:132
16771995422,4cyclictest33-21ksoftirqd/207:10:132
16770995414,38cyclictest13710-21kworker/1:109:50:481
134491540,5ptp4l0-21swapper/210:04:232
134491540,4ptp4l0-21swapper/108:13:451
134491540,3ptp4l0-21swapper/009:56:060
134491540,3ptp4l0-21swapper/007:56:050
16771995325,5cyclictest33-21ksoftirqd/208:47:062
16771995324,7cyclictest33-21ksoftirqd/208:45:002
16771995322,5cyclictest33-21ksoftirqd/211:45:212
16771995322,4cyclictest33-21ksoftirqd/212:06:462
134491530,6ptp4l1301-21snmpd10:05:383
134491530,4ptp4l0-21swapper/109:13:291
134491530,4ptp4l0-21swapper/010:20:160
134491530,4ptp4l0-21swapper/010:20:160
134491530,3ptp4l15084-21date09:25:000
16771995224,3cyclictest33-21ksoftirqd/210:20:232
16771995224,3cyclictest33-21ksoftirqd/210:20:232
16771995222,6cyclictest33-21ksoftirqd/212:20:152
16771995222,3cyclictest33-21ksoftirqd/211:30:162
16771995219,6cyclictest33-21ksoftirqd/209:10:122
134491520,4ptp4l0-21swapper/312:35:353
134491520,4ptp4l0-21swapper/211:23:052
134491520,4ptp4l0-21swapper/211:23:052
134491520,4ptp4l0-21swapper/011:04:460
134491520,18ptp4l0-21swapper/112:08:411
16771995145,3cyclictest5638-21sh09:05:012
16771995122,3cyclictest33-21ksoftirqd/211:37:472
16771995117,4cyclictest33-21ksoftirqd/208:25:202
16771995115,6cyclictest33-21ksoftirqd/207:31:532
134491510,4ptp4l0-21swapper/012:01:140
134491510,4ptp4l0-21swapper/011:31:570
134491510,4ptp4l0-21swapper/008:19:300
134491510,3ptp4l22523-21df10:50:150
134491510,3ptp4l22523-21df10:50:150
134491510,3ptp4l0-21swapper/207:26:532
134491510,2ptp4l0-21swapper/310:34:573
16771995024,7cyclictest33-21ksoftirqd/210:33:552
16771995022,7cyclictest33-21ksoftirqd/209:37:552
16771995022,7cyclictest33-21ksoftirqd/207:20:002
16771995022,4cyclictest33-21ksoftirqd/208:19:212
16771995021,6cyclictest33-21ksoftirqd/208:00:182
16771995021,3cyclictest33-21ksoftirqd/211:19:152
16771995019,4cyclictest33-21ksoftirqd/212:11:072
16771995019,4cyclictest33-21ksoftirqd/211:07:492
16771995019,3cyclictest33-21ksoftirqd/210:10:222
16771995019,3cyclictest33-21ksoftirqd/207:39:302
134491500,4ptp4l0-21swapper/009:40:520
134491500,4ptp4l0-21swapper/008:38:280
134491500,3ptp4l0-21swapper/211:58:482
16771994924,6cyclictest33-21ksoftirqd/209:50:272
16771994923,7cyclictest33-21ksoftirqd/209:30:012
16771994923,5cyclictest33-21ksoftirqd/209:20:462
16771994919,3cyclictest33-21ksoftirqd/210:36:012
16771994919,3cyclictest33-21ksoftirqd/209:08:472
16771994919,12cyclictest33-21ksoftirqd/208:05:172
134491490,4ptp4l0-21swapper/310:45:323
134491490,4ptp4l0-21swapper/011:45:230
134491490,4ptp4l0-21swapper/010:16:190
134491490,4ptp4l0-21swapper/010:13:360
134491490,3ptp4l0-21swapper/011:41:350
16771994823,4cyclictest33-21ksoftirqd/209:43:442
1677199482,2cyclictest121rcu_preempt12:16:582
16771994821,5cyclictest33-21ksoftirqd/208:22:182
16771994819,4cyclictest33-21ksoftirqd/212:28:192
16771994819,3cyclictest33-21ksoftirqd/209:25:122
16771994818,7cyclictest33-21ksoftirqd/207:20:132
134491480,4ptp4l0-21swapper/010:59:160
134491480,4ptp4l0-21swapper/009:34:520
16771994720,3cyclictest33-21ksoftirqd/211:28:222
16771994718,3cyclictest33-21ksoftirqd/211:10:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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