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2026-05-04 - 08:40
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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 May 04, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123162820,6sleep01870699cyclictest22:20:260
1870899742,30cyclictest0-21swapper/221:55:262
18708996833,6cyclictest33-21ksoftirqd/221:50:012
138202680,6sleep1241ktimersoftd/121:15:251
134491670,18ptp4l6287-21seq00:26:591
18708996430,4cyclictest33-21ksoftirqd/200:15:152
194282620,4sleep00-21swapper/020:20:140
134491610,4ptp4l0-21swapper/319:35:313
18708995929,3cyclictest33-21ksoftirqd/222:20:112
134491590,4ptp4l0-21swapper/022:45:140
134491580,4ptp4l0-21swapper/321:32:123
134491570,3ptp4l0-21swapper/019:55:240
134491570,3ptp4l0-21swapper/000:20:120
134491560,6ptp4l0-21swapper/119:05:571
134491560,5ptp4l0-21swapper/019:05:480
134491560,3ptp4l24881-21memory20:30:210
134491560,3ptp4l0-21swapper/221:07:202
1870899555,8cyclictest33-21ksoftirqd/219:45:012
134491550,3ptp4l0-21swapper/320:06:323
134491550,3ptp4l0-21swapper/200:10:032
1870899545,6cyclictest33-21ksoftirqd/222:55:002
1870899544,6cyclictest0-21swapper/220:45:242
1870899544,5cyclictest33-21ksoftirqd/221:54:592
1870899544,13cyclictest0-21swapper/220:05:132
1870899541,7cyclictest33-21ksoftirqd/220:15:242
134491540,5ptp4l0-21swapper/022:29:520
134491540,4ptp4l0-21swapper/023:05:120
134491540,4ptp4l0-21swapper/023:05:120
134491540,4ptp4l0-21swapper/019:30:260
1870899535,8cyclictest33-21ksoftirqd/219:30:162
1870899535,4cyclictest33-21ksoftirqd/220:00:162
1870899534,8cyclictest33-21ksoftirqd/200:30:262
1870899530,9cyclictest321ktimersoftd/219:20:002
1870899530,9cyclictest321ktimersoftd/219:20:002
134491530,4ptp4l0-21swapper/000:29:200
1870899524,5cyclictest33-21ksoftirqd/223:55:272
1870899523,6cyclictest0-21swapper/220:20:252
1870899523,5cyclictest17301-21latency_hist22:35:002
1870899522,7cyclictest0-21swapper/219:55:132
1870799523,2cyclictest31614-21kworker/1:119:15:291
1870799523,2cyclictest31614-21kworker/1:119:15:291
134491520,4ptp4l0-21swapper/319:42:063
134491520,11ptp4l0-21swapper/020:18:420
1870899514,8cyclictest33-21ksoftirqd/221:20:012
1870899513,8cyclictest33-21ksoftirqd/200:25:232
1870899513,5cyclictest33-21ksoftirqd/221:35:282
1870899511,6cyclictest0-21swapper/219:50:162
1870899510,7cyclictest33-21ksoftirqd/222:10:172
1870899510,7cyclictest321ktimersoftd/221:20:142
134491510,4ptp4l0-21swapper/323:56:073
134491510,4ptp4l0-21swapper/322:09:353
134491510,13ptp4l0-21swapper/023:03:400
1870899505,5cyclictest33-21ksoftirqd/222:00:202
1870899503,7cyclictest0-21swapper/220:25:142
1870899502,29cyclictest0-21swapper/223:25:242
1870899500,7cyclictest33-21ksoftirqd/221:00:162
151462500,4sleep30-21swapper/323:40:003
151462500,4sleep30-21swapper/323:40:003
134491500,12ptp4l0-21swapper/023:55:260
1870899496,4cyclictest23393-21processes22:45:252
1870899494,5cyclictest33-21ksoftirqd/220:10:242
1870899492,7cyclictest33-21ksoftirqd/221:40:162
1870899491,7cyclictest0-21swapper/223:38:542
1870899491,7cyclictest0-21swapper/223:38:542
1870899491,6cyclictest33-21ksoftirqd/222:40:172
1870899491,5cyclictest33-21ksoftirqd/220:35:282
1870899490,6cyclictest33-21ksoftirqd/221:25:212
1870899490,6cyclictest33-21ksoftirqd/200:00:182
1870899490,5cyclictest33-21ksoftirqd/223:20:212
134491490,4ptp4l0-21swapper/023:25:000
134491490,4ptp4l0-21swapper/023:24:250
134491490,4ptp4l0-21swapper/019:49:570
134491490,3ptp4l0-21swapper/320:04:023
134491490,3ptp4l0-21swapper/023:46:130
1870899485,9cyclictest33-21ksoftirqd/222:25:232
1870899485,8cyclictest33-21ksoftirqd/220:55:152
1870899483,6cyclictest33-21ksoftirqd/222:55:102
1870899482,7cyclictest0-21swapper/222:15:272
1870899482,6cyclictest33-21ksoftirqd/221:10:142
1870899482,6cyclictest0-21swapper/219:20:142
1870899482,10cyclictest0-21swapper/223:40:432
1870899480,6cyclictest33-21ksoftirqd/223:30:242
1870899480,6cyclictest33-21ksoftirqd/219:14:492
1870899480,6cyclictest33-21ksoftirqd/219:14:492
1870899480,5cyclictest33-21ksoftirqd/223:05:182
1870899480,5cyclictest33-21ksoftirqd/223:05:182
134491480,4ptp4l0-21swapper/023:15:260
134491480,4ptp4l0-21swapper/021:21:580
134491480,4ptp4l0-21swapper/000:03:180
1870899473,7cyclictest33-21ksoftirqd/219:25:142
18708994716,5cyclictest33-21ksoftirqd/200:20:142
1870899470,7cyclictest33-21ksoftirqd/200:05:062
1870899470,6cyclictest33-21ksoftirqd/221:30:172
134491470,4ptp4l0-21swapper/321:24:353
134491470,4ptp4l0-21swapper/020:12:560
134491470,4ptp4l0-21swapper/000:39:360
134491470,3ptp4l0-21swapper/323:27:243
134491470,3ptp4l0-21swapper/300:26:403
134491470,3ptp4l0-21swapper/122:04:561
1870899464,5cyclictest33-21ksoftirqd/222:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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