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2026-04-04 - 11:26
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Sat Apr 04, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1632821440,2sleep22080299cyclictest23:35:222
1950621370,6sleep22080299cyclictest22:34:592
2080299741,70cyclictest0-21swapper/223:30:282
2080299712,67cyclictest0-21swapper/219:45:282
20801996929,10cyclictest25-21ksoftirqd/123:35:211
20801996927,10cyclictest25-21ksoftirqd/123:55:241
20800996815,11cyclictest21773-21taskset23:46:230
20801996730,10cyclictest25-21ksoftirqd/100:10:221
20800996516,11cyclictest30228-21taskset20:38:190
134491650,3ptp4l13858-21ntp_states22:20:233
2080099649,11cyclictest22891-21awk21:30:250
20800996416,9cyclictest16120-21taskset20:07:120
20800996415,11cyclictest28554-21taskset22:54:360
20800996415,11cyclictest25320-21taskset20:27:010
20800996411,11cyclictest24176-21cut19:15:210
243042630,4sleep224309-21irqrtprio20:25:192
20801996330,4cyclictest25-21ksoftirqd/121:50:111
20800996315,12cyclictest26116-21taskset22:47:460
20800996315,10cyclictest11565-21seq19:58:010
20801996225,4cyclictest25-21ksoftirqd/119:50:281
20800996216,9cyclictest14174-21seq21:12:060
20800996215,8cyclictest24138-21taskset23:52:200
20800996214,11cyclictest2036-21seq19:37:550
20801996126,8cyclictest25-21ksoftirqd/120:00:011
20801996023,8cyclictest25-21ksoftirqd/123:15:141
2080199601,7cyclictest121rcu_preempt19:38:111
2080099606,11cyclictest11973-21switchtime23:25:250
20800996015,10cyclictest27571-21seq19:23:190
20800996014,10cyclictest12706-21taskset00:37:160
20800996010,15cyclictest1-21systemd22:30:240
20801995927,8cyclictest25-21ksoftirqd/100:05:151
20801995923,8cyclictest25-21ksoftirqd/122:30:131
2080099599,10cyclictest14781-21turbostat.cron22:24:550
2080099596,11cyclictest7267-21tr23:15:220
2080099595,10cyclictest9753-21cat23:20:250
20800995915,17cyclictest12354-21taskset22:18:320
20800995915,11cyclictest31375-21taskset00:08:520
20800995914,9cyclictest11771-21taskset21:05:490
20800995914,9cyclictest11771-21taskset21:05:490
20800995914,12cyclictest10566-21runrttasks00:34:120
20801995829,9cyclictest25-21ksoftirqd/122:00:121
2080099587,8cyclictest25044-21hwlatdetect23:55:150
20800995814,12cyclictest9624-21taskset21:02:420
20800995811,10cyclictest3511-21/usr/sbin/munin19:40:220
134491580,4ptp4l26034-21/usr/sbin/munin19:20:161
134491580,3ptp4l0-21swapper/022:01:270
20801995724,9cyclictest25-21ksoftirqd/121:25:281
20801995723,9cyclictest25-21ksoftirqd/120:20:011
20801995720,8cyclictest25-21ksoftirqd/123:40:221
20800995715,9cyclictest5690-21runrttasks00:20:410
164382570,4sleep30-21swapper/323:35:233
134491570,4ptp4l0-21swapper/322:36:153
20801995629,3cyclictest25-21ksoftirqd/119:25:161
20801995628,10cyclictest25-21ksoftirqd/121:20:211
20801995623,7cyclictest25-21ksoftirqd/100:25:161
2080099567,9cyclictest0-21swapper/020:00:230
20800995614,9cyclictest7571-21seq22:06:140
20800995614,11cyclictest9048-21taskset19:52:530
20800995613,11cyclictest5382-21taskset23:13:230
134491560,3ptp4l0-21swapper/321:50:253
20801995527,9cyclictest25-21ksoftirqd/120:05:151
20801995518,9cyclictest25-21ksoftirqd/122:05:221
2080199550,8cyclictest25-21ksoftirqd/119:10:141
2080099559,42cyclictest746-21/usr/sbin/munin20:45:110
2080099558,11cyclictest1019-21/usr/sbin/munin23:05:160
20800995514,16cyclictest16499-21taskset21:17:230
20800995514,10cyclictest1282-21taskset00:14:180
20800995513,16cyclictest212-21systemd-journal22:28:120
20800995511,11cyclictest1317-21runrttasks19:27:280
20800995511,10cyclictest0-21swapper/023:01:250
20800995510,10cyclictest6651-21ps20:55:230
134491550,4ptp4l0-21swapper/300:07:543
134491550,3ptp4l0-21swapper/122:48:561
2080199545,6cyclictest25-21ksoftirqd/100:30:131
2080099543,7cyclictest134491ptp4l23:45:010
20800995413,10cyclictest9856-21taskset22:11:050
20800995410,40cyclictest31192-21/usr/sbin/munin21:50:130
20800995410,11cyclictest13906-21taskset23:30:210
134491540,5ptp4l0-21swapper/219:21:342
134491540,4ptp4l0-21swapper/321:55:513
134491540,3ptp4l0-21swapper/323:02:013
134491540,3ptp4l0-21swapper/122:26:341
2080099538,42cyclictest27269-21ntpq21:40:220
2080099535,11cyclictest31826-21runrttasks19:30:260
20800995310,11cyclictest1317-21runrttasks00:18:250
134491530,4ptp4l0-21swapper/322:02:313
134491530,4ptp4l0-21swapper/222:17:572
2080199523,7cyclictest25-21ksoftirqd/120:35:001
2080099529,9cyclictest0-21swapper/019:14:570
20800995213,10cyclictest18663-21taskset21:20:310
134491520,3ptp4l0-21swapper/223:51:322
2080199515,9cyclictest25-21ksoftirqd/120:05:011
20801995133,9cyclictest25-21ksoftirqd/119:15:271
2080199510,10cyclictest25-21ksoftirqd/121:45:011
2080099518,10cyclictest0-21swapper/019:48:140
134491510,5ptp4l0-21swapper/120:25:061
134491510,4ptp4l1317-21runrttasks19:08:301
134491510,4ptp4l0-21swapper/321:02:123
134491510,4ptp4l0-21swapper/300:13:203
2080199505,8cyclictest25-21ksoftirqd/123:05:201
2080199504,9cyclictest25-21ksoftirqd/123:25:271
2080199504,7cyclictest25-21ksoftirqd/122:59:591
2080199502,7cyclictest25-21ksoftirqd/123:15:011
2080199502,6cyclictest25-21ksoftirqd/120:15:001
20801995025,3cyclictest25-21ksoftirqd/100:18:201
20801995021,9cyclictest25-21ksoftirqd/122:45:011
20801995019,4cyclictest25-21ksoftirqd/123:30:141
2080099508,9cyclictest0-21swapper/020:40:230
2080099507,9cyclictest0-21swapper/022:35:260
2080099506,7cyclictest29950-21ntpq22:55:240
2080099504,8cyclictest0-21swapper/023:35:120
134491500,4ptp4l0-21swapper/121:18:591
134491500,3ptp4l5559-21ls00:20:293
2080199493,4cyclictest25-21ksoftirqd/123:25:011
2080199493,3cyclictest25-21ksoftirqd/119:40:171
20801994919,11cyclictest25-21ksoftirqd/100:00:241
2080099498,10cyclictest1160-21sed21:55:140
2080099498,10cyclictest0-21swapper/020:54:300
134491490,3ptp4l0-21swapper/119:49:481
2080199486,9cyclictest25-21ksoftirqd/100:35:161
2080199484,7cyclictest25-21ksoftirqd/123:05:001
2080199484,3cyclictest25-21ksoftirqd/122:10:261
2080199484,10cyclictest25-21ksoftirqd/120:55:001
2080199483,7cyclictest25-21ksoftirqd/122:36:351
2080199483,7cyclictest25-21ksoftirqd/120:35:261
2080199483,4cyclictest25-21ksoftirqd/121:05:221
2080199483,4cyclictest25-21ksoftirqd/121:05:221
20801994831,9cyclictest25-21ksoftirqd/122:50:171
2080199483,10cyclictest25-21ksoftirqd/120:15:121
20800994814,9cyclictest28832-21runrttasks00:03:150
20800994811,11cyclictest18085-21cat20:10:250
20800994810,9cyclictest0-21swapper/020:16:210
20800994810,7cyclictest22162-21df22:40:140
20800994810,4cyclictest137891phc2sys20:30:110
2080199473,8cyclictest25-21ksoftirqd/121:05:001
20801994735,3cyclictest25-21ksoftirqd/120:50:011
20801994730,7cyclictest25-21ksoftirqd/123:45:241
2080199470,5cyclictest25-21ksoftirqd/121:30:171
2080099476,15cyclictest7377-21ntpq00:25:210
2080199462,3cyclictest25-21ksoftirqd/121:45:171
20801994621,6cyclictest25-21ksoftirqd/122:24:141
134491460,4ptp4l2318-21gnome-shell20:21:592
134491460,3ptp4l0-21swapper/323:19:543
134491460,3ptp4l0-21swapper/322:27:163
2080199453,4cyclictest25-21ksoftirqd/121:59:591
2080199453,3cyclictest121rcu_preempt00:20:191
20801994521,4cyclictest25-21ksoftirqd/119:30:201
20801994520,3cyclictest25-21ksoftirqd/120:55:121
2080199450,7cyclictest25-21ksoftirqd/123:50:171
134491450,5ptp4l0-21swapper/019:07:220
134491450,3ptp4l0-21swapper/322:18:103
134491450,3ptp4l0-21swapper/120:41:381
2080299441,41cyclictest0-21swapper/222:05:292
2080199444,7cyclictest25-21ksoftirqd/121:35:171
20800994411,10cyclictest134691getstats20:20:120
134491440,9ptp4l0-21swapper/222:37:542
134491440,9ptp4l0-21swapper/219:57:312
134491440,9ptp4l0-21swapper/200:15:442
134491440,4ptp4l28312-21apt-get20:35:122
134491440,11ptp4l0-21swapper/300:00:533
134491440,10ptp4l0-21swapper/323:29:003
134491440,10ptp4l0-21swapper/220:52:092
134491440,10ptp4l0-21swapper/219:31:152
134491430,9ptp4l0-21swapper/223:49:352
134491430,9ptp4l0-21swapper/221:14:572
134491430,9ptp4l0-21swapper/220:31:262
134491430,9ptp4l0-21swapper/220:06:392
134491430,9ptp4l0-21swapper/220:02:272
134491430,9ptp4l0-21swapper/219:52:122
134491430,9ptp4l0-21swapper/219:25:302
134491430,9ptp4l0-21swapper/219:17:252
134491430,9ptp4l0-21swapper/200:02:242
134491430,6ptp4l0-21swapper/320:19:583
134491430,5ptp4l0-21swapper/323:47:163
134491430,3ptp4l0-21swapper/222:46:292
2080199422,4cyclictest25-21ksoftirqd/122:20:011
134491420,9ptp4l33-21ksoftirqd/220:59:392
134491420,9ptp4l0-21swapper/222:55:562
134491420,5ptp4l0-21swapper/223:20:162
134491420,4ptp4l0-21swapper/319:18:593
134491410,9ptp4l0-21swapper/223:56:162
134491410,9ptp4l0-21swapper/222:42:132
134491410,5ptp4l19582-21diskstats21:25:150
134491410,5ptp4l0-21swapper/220:12:072
134491410,4ptp4l30365-21users21:45:282
134491410,4ptp4l25192-21apt-get19:20:033
134491410,4ptp4l18130-21perl23:40:143
134491410,4ptp4l0-21swapper/300:15:123
134491410,4ptp4l0-21swapper/223:00:012
20801994034,3cyclictest25-21ksoftirqd/121:10:131
134491400,5ptp4l29198-21/usr/sbin/munin21:45:170
134491400,5ptp4l14918-21sed22:25:002
134491400,4ptp4l0-21swapper/323:55:143
134491400,4ptp4l0-21swapper/323:52:243
134491400,4ptp4l0-21swapper/320:20:263
134491400,4ptp4l0-21swapper/319:40:193
134491400,4ptp4l0-21swapper/300:25:283
134491400,4ptp4l0-21swapper/223:40:132
134491400,4ptp4l0-21swapper/223:14:372
134491400,4ptp4l0-21swapper/221:36:592
134491400,4ptp4l0-21swapper/221:34:412
134491400,4ptp4l0-21swapper/221:15:172
134491400,4ptp4l0-21swapper/200:12:232
134491400,3ptp4l5517-21apt-get23:15:012
134491400,3ptp4l3992-21apt-get00:20:122
134491400,3ptp4l3019-21apt-get22:00:032
134491400,3ptp4l20834-21apt-get19:10:123
134491400,2ptp4l27962-21ls22:50:262
46198390,5rtkit-daemon0-21swapper/319:50:153
134491390,5ptp4l0-21swapper/200:05:232
134491390,4ptp4l0-21swapper/323:30:193
134491390,4ptp4l0-21swapper/323:14:533
134491390,4ptp4l0-21swapper/321:37:093
134491390,4ptp4l0-21swapper/223:05:292
134491390,4ptp4l0-21swapper/222:26:462
134491390,4ptp4l0-21swapper/222:10:152
134491390,4ptp4l0-21swapper/221:50:112
134491390,4ptp4l0-21swapper/221:40:152
134491390,4ptp4l0-21swapper/221:05:312
134491390,4ptp4l0-21swapper/221:05:312
134491390,4ptp4l0-21swapper/221:01:052
134491390,4ptp4l0-21swapper/220:40:302
134491390,4ptp4l0-21swapper/219:40:532
134491390,4ptp4l0-21swapper/219:35:252
134491390,4ptp4l0-21swapper/219:10:112
134491390,4ptp4l0-21swapper/200:37:222
134491390,4ptp4l0-21swapper/200:31:282
134491390,4ptp4l0-21swapper/200:25:022
134491390,4ptp4l0-21swapper/021:36:220
134491390,3ptp4l1889-21sed21:55:212
134491390,3ptp4l0-21swapper/320:05:383
134491390,3ptp4l0-21swapper/220:45:372
134491390,2ptp4l0-21swapper/300:35:293
134491380,4ptp4l3799migration/320:14:543
134491380,4ptp4l0-21swapper/323:07:553
134491380,4ptp4l0-21swapper/322:57:183
134491380,4ptp4l0-21swapper/322:50:263
134491380,4ptp4l0-21swapper/322:45:523
134491380,4ptp4l0-21swapper/322:30:303
134491380,4ptp4l0-21swapper/322:10:193
134491380,4ptp4l0-21swapper/321:45:043
134491380,4ptp4l0-21swapper/321:20:183
134491380,4ptp4l0-21swapper/320:35:463
134491380,4ptp4l0-21swapper/320:34:263
134491380,4ptp4l0-21swapper/320:25:293
134491380,4ptp4l0-21swapper/319:30:173
134491380,4ptp4l0-21swapper/319:25:313
134491380,4ptp4l0-21swapper/300:30:143
134491380,4ptp4l0-21swapper/223:25:462
134491380,4ptp4l0-21swapper/221:20:322
134491380,4ptp4l0-21swapper/220:16:012
134491380,3ptp4l26173-21/usr/sbin/munin21:40:213
134491380,3ptp4l0-21swapper/322:44:593
134491380,3ptp4l0-21swapper/319:46:433
134491380,3ptp4l0-21swapper/221:29:422
20803993732,3cyclictest41-21ksoftirqd/320:00:003
134491370,4ptp4l0-21swapper/323:22:343
134491370,4ptp4l0-21swapper/321:33:563
134491370,4ptp4l0-21swapper/321:17:163
134491370,4ptp4l0-21swapper/321:14:333
134491370,4ptp4l0-21swapper/321:05:133
134491370,4ptp4l0-21swapper/321:05:133
134491370,4ptp4l0-21swapper/320:00:023
134491370,3ptp4l6770-21ls22:05:203
134491370,3ptp4l0-21swapper/320:56:343
134491370,3ptp4l0-21swapper/320:45:383
134491370,3ptp4l0-21swapper/320:42:413
134491360,4ptp4l0-21swapper/321:27:053
134491360,3ptp4l0-21swapper/319:36:053
134491350,3ptp4l0-21swapper/320:52:253
46198340,5rtkit-daemon0-21swapper/219:06:382
203222182,3sleep30-21swapper/319:07:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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