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2026-03-14 - 18:20
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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 Sat Mar 14, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1312221800,4sleep1627499cyclictest08:35:001
1819821160,3sleep0627399cyclictest08:45:140
235732770,4sleep00-21swapper/011:15:170
6275996525,9cyclictest33-21ksoftirqd/211:54:592
6275996525,9cyclictest33-21ksoftirqd/211:54:592
32862630,5sleep10-21swapper/109:20:251
278292630,5sleep20-21swapper/211:25:142
134491610,5ptp4l0-21swapper/110:55:211
134491610,4ptp4l0-21swapper/210:50:482
134491610,4ptp4l0-21swapper/012:10:120
134491610,18ptp4l30042-21df_abs09:10:140
134491590,3ptp4l13221-21apt-get07:25:120
134491590,3ptp4l13023-21ls09:40:260
134491590,3ptp4l0-21swapper/012:31:190
6275995823,4cyclictest33-21ksoftirqd/209:05:002
134491580,4ptp4l0-21swapper/208:19:302
134491570,4ptp4l212-21systemd-journal08:57:532
134491570,3ptp4l0-21swapper/212:30:192
134491560,5ptp4l0-21swapper/311:25:173
134491560,4ptp4l0-21swapper/108:50:471
134491560,4ptp4l0-21swapper/012:05:130
134491560,3ptp4l0-21swapper/111:03:241
134491560,3ptp4l0-21swapper/111:03:241
134491560,3ptp4l0-21swapper/107:40:291
134491550,4ptp4l0-21swapper/308:44:243
134491550,4ptp4l0-21swapper/211:35:352
134491550,4ptp4l0-21swapper/111:47:011
134491550,3ptp4l0-21swapper/008:16:300
134491550,12ptp4l0-21swapper/112:05:141
134491540,4ptp4l0-21swapper/112:16:451
6275995324,3cyclictest33-21ksoftirqd/212:25:152
6275995317,5cyclictest33-21ksoftirqd/208:29:082
162482530,3sleep00-21swapper/009:50:130
162482530,3sleep00-21swapper/009:50:130
134491530,4ptp4l0-21swapper/209:21:142
134491530,4ptp4l0-21swapper/108:09:411
134491530,4ptp4l0-21swapper/011:56:180
6275995235,16cyclictest33-21ksoftirqd/210:49:592
6275995221,9cyclictest33-21ksoftirqd/209:55:462
6275995216,4cyclictest33-21ksoftirqd/210:43:512
6275995214,6cyclictest33-21ksoftirqd/207:30:222
134491520,4ptp4l0-21swapper/212:01:212
134491520,4ptp4l0-21swapper/211:18:412
134491520,4ptp4l0-21swapper/209:12:502
134491520,4ptp4l0-21swapper/011:55:000
134491520,3ptp4l0-21swapper/010:57:090
6275995123,8cyclictest33-21ksoftirqd/208:41:052
6275995121,3cyclictest33-21ksoftirqd/209:38:522
134491510,5ptp4l0-21swapper/010:46:480
134491510,4ptp4l0-21swapper/210:17:392
134491510,4ptp4l0-21swapper/209:15:462
134491510,4ptp4l0-21swapper/207:29:302
134491510,4ptp4l0-21swapper/109:36:341
134491510,4ptp4l0-21swapper/010:25:310
134491510,4ptp4l0-21swapper/007:13:240
134491510,3ptp4l4891-21hddtemp_smartct10:35:171
134491510,3ptp4l0-21swapper/210:03:392
134491510,3ptp4l0-21swapper/007:48:360
627599509,9cyclictest33-21ksoftirqd/208:15:012
627599502,4cyclictest0-21swapper/207:21:412
6275995017,4cyclictest33-21ksoftirqd/210:56:402
134491500,4ptp4l0-21swapper/208:48:202
134491500,4ptp4l0-21swapper/208:08:552
134491500,4ptp4l0-21swapper/207:10:542
134491500,4ptp4l0-21swapper/111:52:371
134491500,4ptp4l0-21swapper/111:52:371
134491500,4ptp4l0-21swapper/009:32:280
134491500,3ptp4l0-21swapper/208:37:102
134491500,3ptp4l0-21swapper/010:39:190
627599493,2cyclictest121rcu_preempt07:45:582
6275994921,7cyclictest33-21ksoftirqd/209:43:512
6275994918,6cyclictest33-21ksoftirqd/212:10:012
627599491,3cyclictest121rcu_preempt08:51:592
134491490,4ptp4l0-21swapper/312:37:453
134491490,4ptp4l0-21swapper/309:18:243
134491490,4ptp4l0-21swapper/211:42:132
134491490,4ptp4l0-21swapper/209:47:102
134491490,4ptp4l0-21swapper/012:23:480
134491490,4ptp4l0-21swapper/007:51:240
134491490,2ptp4l0-21swapper/108:26:491
134491490,12ptp4l0-21swapper/007:24:140
6275994818,5cyclictest33-21ksoftirqd/211:05:172
134491480,9ptp4l0-21swapper/211:47:362
134491480,4ptp4l0-21swapper/311:55:123
134491480,4ptp4l0-21swapper/311:09:383
134491480,4ptp4l0-21swapper/310:14:553
134491480,4ptp4l0-21swapper/309:53:533
134491480,4ptp4l0-21swapper/309:53:533
134491480,4ptp4l0-21swapper/210:21:342
134491480,4ptp4l0-21swapper/112:00:091
134491480,4ptp4l0-21swapper/011:34:360
134491480,4ptp4l0-21swapper/011:10:530
134491480,3ptp4l0-21swapper/107:30:511
134491480,3ptp4l0-21swapper/008:01:490
134491480,2ptp4l0-21swapper/310:20:143
134491480,12ptp4l5043-21sshd07:05:221
6275994716,5cyclictest33-21ksoftirqd/212:15:122
6275994714,3cyclictest33-21ksoftirqd/210:35:192
6275994711,3cyclictest33-21ksoftirqd/208:34:332
627599470,2cyclictest121rcu_preempt10:32:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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