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2025-12-09 - 08:10
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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 Tue Dec 09, 2025 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2213321740,5sleep3683299cyclictest23:10:013
70412660,5sleep30-21swapper/322:35:273
2847191650,9ptp4l0-21swapper/223:17:362
2847191650,4ptp4l0-21swapper/023:35:180
2847191640,4ptp4l31603-21ls20:00:280
2847191640,4ptp4l0-21swapper/022:10:300
2847191620,4ptp4l0-21swapper/119:05:181
196352620,4sleep10-21swapper/119:35:241
2847191610,3ptp4l0-21swapper/023:30:140
2847191600,3ptp4l13345-21apt-get00:00:123
2847191600,15ptp4l0-21swapper/019:50:190
2847191580,4ptp4l0-21swapper/120:20:171
2847191580,3ptp4l521-21apt-get21:15:143
2847191570,3ptp4l0-21swapper/100:20:281
109602570,5sleep20-21swapper/220:25:282
6831995621,4cyclictest33-21ksoftirqd/221:00:012
2847191560,5ptp4l0-21swapper/219:25:012
2847191560,5ptp4l0-21swapper/219:25:002
2847191560,3ptp4l0-21swapper/123:32:431
2847191560,3ptp4l0-21swapper/020:42:280
2847191560,2ptp4l18379-21apt-get00:10:140
6831995524,4cyclictest33-21ksoftirqd/222:00:022
6831995521,4cyclictest33-21ksoftirqd/219:49:592
6831995433,3cyclictest33-21ksoftirqd/200:15:002
6831995425,7cyclictest33-21ksoftirqd/223:55:192
6831995422,5cyclictest33-21ksoftirqd/222:30:302
2847191540,4ptp4l0-21swapper/219:35:382
2847191530,4ptp4l0-21swapper/221:25:142
2847191530,4ptp4l0-21swapper/023:10:290
2847191530,4ptp4l0-21swapper/020:10:470
6831995226,3cyclictest33-21ksoftirqd/223:55:002
6831995222,4cyclictest33-21ksoftirqd/223:26:042
6831995222,4cyclictest33-21ksoftirqd/220:05:152
2847191520,4ptp4l0-21swapper/219:19:402
2847191520,4ptp4l0-21swapper/120:41:201
2847191520,4ptp4l0-21swapper/120:17:161
2847191520,3ptp4l0-21swapper/123:50:531
2847191520,3ptp4l0-21swapper/122:29:401
2847191520,3ptp4l0-21swapper/122:15:351
6831995123,3cyclictest33-21ksoftirqd/223:05:002
6831995123,3cyclictest33-21ksoftirqd/219:30:162
6831995122,7cyclictest33-21ksoftirqd/222:06:222
6831995120,4cyclictest33-21ksoftirqd/200:05:522
6831995118,11cyclictest33-21ksoftirqd/220:10:232
2847191510,4ptp4l0-21swapper/319:09:303
2847191510,4ptp4l0-21swapper/223:48:192
2847191510,4ptp4l0-21swapper/222:11:482
2847191510,4ptp4l0-21swapper/123:17:281
2847191510,4ptp4l0-21swapper/122:52:111
2847191510,4ptp4l0-21swapper/122:39:111
2847191510,4ptp4l0-21swapper/022:43:150
2847191510,4ptp4l0-21swapper/021:03:520
2847191510,4ptp4l0-21swapper/019:16:510
2847191510,4ptp4l0-21swapper/019:06:200
2847191510,3ptp4l0-21swapper/123:00:521
2847191510,3ptp4l0-21swapper/122:48:441
2847191510,3ptp4l0-21swapper/122:30:471
2847191510,3ptp4l0-21swapper/120:31:021
6831995023,7cyclictest33-21ksoftirqd/220:35:012
6831995023,4cyclictest33-21ksoftirqd/222:49:042
6831995021,6cyclictest33-21ksoftirqd/219:25:162
6831995021,3cyclictest33-21ksoftirqd/223:45:012
6831995019,9cyclictest33-21ksoftirqd/222:19:012
2847191500,4ptp4l0-21swapper/123:41:431
2847191500,4ptp4l0-21swapper/121:33:531
2847191500,3ptp4l0-21swapper/122:00:221
2847191500,3ptp4l0-21swapper/019:27:020
2847191500,11ptp4l0-21swapper/023:56:170
6831994925,8cyclictest33-21ksoftirqd/200:23:172
6831994922,7cyclictest33-21ksoftirqd/222:21:042
6831994920,5cyclictest33-21ksoftirqd/200:04:272
6831994920,4cyclictest33-21ksoftirqd/220:00:002
2847191490,4ptp4l0-21swapper/019:42:490
2847191490,3ptp4l0-21swapper/100:30:001
2847191490,3ptp4l0-21swapper/000:38:110
2847191490,11ptp4l0-21swapper/122:55:251
6831994823,7cyclictest33-21ksoftirqd/221:53:132
6831994821,7cyclictest33-21ksoftirqd/223:10:282
6831994820,3cyclictest33-21ksoftirqd/219:50:132
6831994817,6cyclictest33-21ksoftirqd/222:55:292
6831994817,5cyclictest33-21ksoftirqd/220:45:262
6831994817,4cyclictest33-21ksoftirqd/222:50:292
6831994816,3cyclictest33-21ksoftirqd/221:14:302
6831994811,8cyclictest33-21ksoftirqd/221:22:152
2847191480,4ptp4l0-21swapper/120:08:091
2847191480,3ptp4l0-21swapper/122:08:041
2847191480,3ptp4l0-21swapper/022:19:230
6831994726,9cyclictest33-21ksoftirqd/220:19:242
6831994721,6cyclictest33-21ksoftirqd/223:35:002
6831994718,6cyclictest33-21ksoftirqd/223:05:302
6831994715,6cyclictest33-21ksoftirqd/219:10:272
2847191470,3ptp4l0-21swapper/123:14:421
683199466,2cyclictest33-21ksoftirqd/200:27:592
6831994619,7cyclictest33-21ksoftirqd/220:21:582
6831994615,5cyclictest33-21ksoftirqd/222:25:272
6831994615,4cyclictest33-21ksoftirqd/220:35:222
6831994610,7cyclictest33-21ksoftirqd/221:31:222
2847191460,9ptp4l0-21swapper/323:55:503
2847191460,5ptp4l0-21swapper/219:09:502
2847191460,4ptp4l0-21swapper/119:21:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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