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2026-07-27 - 20:07
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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 Mon Jul 27, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1313721490,4sleep113142-21latency10:30:201
1275421400,6sleep11529999cyclictest09:20:191
305402740,4sleep21530099cyclictest07:40:232
291572700,3sleep129023-21irqrtprio11:05:191
134491700,5ptp4l0-21swapper/010:20:180
134491660,23ptp4l3932-21awk10:10:240
15301996531,9cyclictest41-21ksoftirqd/310:05:173
1530199642,29cyclictest0-21swapper/309:00:223
134491640,4ptp4l13569-21apt-get08:15:010
1529999624,15cyclictest2346-21ntpd08:50:231
134491620,5ptp4l0-21swapper/008:35:280
15301996127,7cyclictest41-21ksoftirqd/308:50:233
1530199612,32cyclictest0-21swapper/309:57:433
134491610,4ptp4l0-21swapper/207:07:502
15301996029,7cyclictest41-21ksoftirqd/310:40:203
134491600,3ptp4l30378-21apt-get10:00:140
1530199592,30cyclictest0-21swapper/308:58:373
1529999592,11cyclictest21398-21latency_hist10:50:011
134491590,4ptp4l0-21swapper/207:39:212
134491590,3ptp4l10530-21meminfo09:15:200
134491580,13ptp4l0-21swapper/008:25:140
1530199573,5cyclictest41-21ksoftirqd/309:20:003
1530199572,36cyclictest0-21swapper/307:37:363
134491570,5ptp4l0-21swapper/008:01:040
134491570,4ptp4l0-21swapper/011:56:400
134491570,4ptp4l0-21swapper/007:12:540
134491570,3ptp4l0-21swapper/112:10:451
134491570,3ptp4l0-21swapper/010:06:370
134491570,3ptp4l0-21swapper/008:30:570
15301995627,9cyclictest41-21ksoftirqd/312:20:143
1530199562,30cyclictest0-21swapper/312:13:593
1529999563,10cyclictest757-21polkitd11:15:281
134491560,4ptp4l0-21swapper/007:29:200
134491560,3ptp4l0-21swapper/209:45:092
134491560,3ptp4l0-21swapper/109:13:021
134491560,3ptp4l0-21swapper/109:13:021
134491560,3ptp4l0-21swapper/107:34:241
1529999553,17cyclictest19788-21cat09:35:201
134491550,4ptp4l0-21swapper/307:05:283
134491550,3ptp4l0-21swapper/111:56:511
134491550,10ptp4l0-21swapper/008:20:140
1530199543,6cyclictest0-21swapper/309:45:273
15301995423,7cyclictest41-21ksoftirqd/309:40:303
1530199542,37cyclictest0-21swapper/311:25:273
1529999547,7cyclictest0-21swapper/110:01:261
134491540,4ptp4l0-21swapper/009:12:450
134491540,4ptp4l0-21swapper/009:12:450
134491540,4ptp4l0-21swapper/008:51:030
134491540,3ptp4l0-21swapper/007:23:100
312262530,4sleep20-21swapper/210:00:212
1530199534,7cyclictest41-21ksoftirqd/309:39:593
1530199533,8cyclictest41-21ksoftirqd/308:50:013
1530199530,13cyclictest41-21ksoftirqd/310:30:143
134491530,4ptp4l0-21swapper/009:32:060
134491530,4ptp4l0-21swapper/008:08:540
1530199525,9cyclictest41-21ksoftirqd/311:20:233
1530199525,6cyclictest22209-21cron07:25:003
1530199523,7cyclictest0-21swapper/308:30:183
1530199523,5cyclictest41-21ksoftirqd/312:19:593
1530199522,7cyclictest0-21swapper/309:10:253
1530199522,7cyclictest0-21swapper/309:10:253
1530199522,7cyclictest0-21swapper/308:15:113
1530199522,11cyclictest0-21swapper/308:28:013
1530199520,6cyclictest0-21swapper/310:15:173
1529999527,6cyclictest0-21swapper/111:44:291
1529999524,6cyclictest134491ptp4l09:40:231
1529999520,10cyclictest21278-21open_files07:20:231
134691520,10getstats9-21ksoftirqd/010:27:090
134491520,4ptp4l0-21swapper/210:55:512
134491520,4ptp4l0-21swapper/210:39:142
134491520,4ptp4l0-21swapper/010:48:570
134491520,4ptp4l0-21swapper/009:56:180
134491520,3ptp4l0-21swapper/211:28:082
134491520,3ptp4l0-21swapper/208:26:552
1530199515,8cyclictest41-21ksoftirqd/312:30:243
1530199515,8cyclictest41-21ksoftirqd/312:30:243
1530199515,7cyclictest41-21ksoftirqd/311:40:013
1530199514,7cyclictest41-21ksoftirqd/309:34:593
1530199513,7cyclictest41-21ksoftirqd/309:50:123
1530199513,7cyclictest0-21swapper/308:10:253
1530199512,8cyclictest0-21swapper/307:25:593
15301995119,7cyclictest41-21ksoftirqd/309:20:213
1530199510,6cyclictest41-21ksoftirqd/310:50:273
1530199510,13cyclictest41-21ksoftirqd/307:20:003
1529999516,11cyclictest0-21swapper/107:17:351
134491510,5ptp4l0-21swapper/211:55:212
134491510,4ptp4l0-21swapper/010:16:420
134491510,4ptp4l0-21swapper/009:20:490
1530199505,8cyclictest41-21ksoftirqd/312:00:143
1530199505,7cyclictest41-21ksoftirqd/311:40:293
1530199504,8cyclictest41-21ksoftirqd/308:00:263
1530199503,6cyclictest41-21ksoftirqd/308:20:263
1530199502,7cyclictest0-21swapper/312:05:253
1530199502,6cyclictest0-21swapper/312:27:393
1530199502,6cyclictest0-21swapper/310:29:593
1530199502,6cyclictest0-21swapper/308:39:593
1530199502,5cyclictest41-21ksoftirqd/311:55:223
1530199502,5cyclictest41-21ksoftirqd/310:20:263
1530199500,6cyclictest41-21ksoftirqd/311:45:223
134491500,4ptp4l0-21swapper/009:03:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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