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2026-04-14 - 20:44
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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 Apr 14, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
625621790,2sleep01420499cyclictest11:30:150
137672700,4sleep20-21swapper/209:25:292
134491680,3ptp4l0-21swapper/309:00:153
134491620,3ptp4l22413-21meminfo09:45:213
134491620,3ptp4l0-21swapper/310:25:153
134491590,3ptp4l0-21swapper/109:46:111
134491580,4ptp4l0-21swapper/210:50:232
134491580,4ptp4l0-21swapper/210:50:232
134491580,3ptp4l0-21swapper/109:11:141
134491580,3ptp4l0-21swapper/010:14:550
134491570,4ptp4l0-21swapper/107:44:081
134491570,4ptp4l0-21swapper/107:44:081
134491570,4ptp4l0-21swapper/011:12:520
134491570,3ptp4l0-21swapper/309:25:203
134491570,3ptp4l0-21swapper/212:30:162
134491560,3ptp4l0-21swapper/308:26:053
134491560,3ptp4l0-21swapper/209:15:302
1420599550,53cyclictest12768-21kworker/1:111:48:291
134491550,3ptp4l9401-21chrt08:05:383
134491550,11ptp4l0-21swapper/009:40:160
14206995417,3cyclictest33-21ksoftirqd/207:26:122
134491540,5ptp4l0-21swapper/312:25:123
134491540,5ptp4l0-21swapper/311:35:143
134491540,3ptp4l0-21swapper/211:45:272
134491530,4ptp4l0-21swapper/210:39:512
134491530,4ptp4l0-21swapper/210:15:002
134491530,4ptp4l0-21swapper/208:29:552
14206995223,8cyclictest33-21ksoftirqd/208:22:342
14206995223,8cyclictest33-21ksoftirqd/208:22:342
14206995218,4cyclictest33-21ksoftirqd/208:02:152
14206995216,4cyclictest33-21ksoftirqd/212:18:162
1420599522,48cyclictest17598-21kworker/1:008:11:291
134491520,5ptp4l0-21swapper/007:09:360
134491520,4ptp4l0-21swapper/312:30:513
134491520,10ptp4l0-21swapper/308:00:203
134491510,5ptp4l0-21swapper/209:49:212
134491510,4ptp4l0-21swapper/308:24:033
134491510,4ptp4l0-21swapper/308:24:033
134491510,4ptp4l0-21swapper/207:24:542
14206995014,4cyclictest33-21ksoftirqd/209:57:502
134491500,4ptp4l0-21swapper/310:30:353
134491500,4ptp4l0-21swapper/211:40:532
134491500,4ptp4l0-21swapper/211:01:322
134491500,4ptp4l0-21swapper/011:07:530
134491500,4ptp4l0-21swapper/007:31:050
134491500,3ptp4l0-21swapper/212:20:542
134491500,2ptp4l0-21swapper/210:41:572
134491500,17ptp4l33-21ksoftirqd/207:06:072
134491500,15ptp4l0-21swapper/207:45:002
134491500,15ptp4l0-21swapper/207:45:002
14206994920,7cyclictest33-21ksoftirqd/211:50:202
14206994920,3cyclictest33-21ksoftirqd/210:59:342
14206994916,5cyclictest33-21ksoftirqd/210:00:242
14206994916,3cyclictest33-21ksoftirqd/207:14:352
14206994914,7cyclictest33-21ksoftirqd/210:45:242
134491490,4ptp4l0-21swapper/308:43:173
134491490,4ptp4l0-21swapper/211:21:542
134491490,4ptp4l0-21swapper/208:31:222
134491490,3ptp4l0-21swapper/312:00:293
134491490,3ptp4l0-21swapper/311:25:033
134491490,3ptp4l0-21swapper/107:20:041
134491490,18ptp4l9-21ksoftirqd/011:37:110
1420699483,2cyclictest121rcu_preempt09:36:592
1420699482,4cyclictest0-21swapper/211:15:352
1420699482,2cyclictest121rcu_preempt09:23:592
14206994818,4cyclictest33-21ksoftirqd/210:27:082
14206994815,9cyclictest33-21ksoftirqd/208:45:002
14206994814,6cyclictest33-21ksoftirqd/208:15:242
134491480,9ptp4l13843-21sshd07:09:051
134491480,4ptp4l401ktimersoftd/311:15:273
134491480,3ptp4l0-21swapper/312:21:213
134491480,3ptp4l0-21swapper/311:20:293
134491480,3ptp4l0-21swapper/311:00:163
134491480,3ptp4l0-21swapper/111:51:001
14206994719,7cyclictest33-21ksoftirqd/209:42:572
14206994715,4cyclictest33-21ksoftirqd/207:18:222
14206994714,6cyclictest33-21ksoftirqd/210:05:152
14206994713,4cyclictest33-21ksoftirqd/212:11:462
1420699470,3cyclictest121rcu_preempt08:54:592
1420599472,44cyclictest17598-21kworker/1:007:36:191
134491470,5ptp4l0-21swapper/309:52:363
134491470,4ptp4l0-21swapper/310:02:343
134491470,4ptp4l0-21swapper/008:28:560
14206994613,4cyclictest33-21ksoftirqd/208:09:572
134491460,4ptp4l0-21swapper/310:59:553
134491460,4ptp4l0-21swapper/308:14:013
134491460,4ptp4l0-21swapper/212:07:202
134491460,4ptp4l0-21swapper/007:48:060
134491460,3ptp4l0-21swapper/311:30:453
134491460,3ptp4l0-21swapper/208:47:112
134491460,3ptp4l0-21swapper/110:05:341
14206994529,4cyclictest33-21ksoftirqd/212:36:492
134491450,5ptp4l0-21swapper/010:15:260
134491450,5ptp4l0-21swapper/010:15:250
134491450,4ptp4l5409-21apt-get08:00:110
134491450,4ptp4l0-21swapper/311:52:523
134491450,3ptp4l0-21swapper/311:14:513
134491450,3ptp4l0-21swapper/108:00:331
134491450,10ptp4l0-21swapper/210:20:502
14206994415,4cyclictest33-21ksoftirqd/209:31:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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