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2026-06-16 - 19:58
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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 highest latencies:
System rackdslot1.osadl.org (updated Tue Jun 16, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41321620,4sleep10-21swapper/108:25:221
2853221390,6sleep32949499cyclictest10:35:173
29494997030,8cyclictest41-21ksoftirqd/308:20:003
29494996927,8cyclictest41-21ksoftirqd/311:50:013
134491690,8ptp4l0-21swapper/007:05:140
29494996634,8cyclictest41-21ksoftirqd/308:10:263
29494996530,7cyclictest41-21ksoftirqd/308:05:003
29494996530,7cyclictest41-21ksoftirqd/308:05:003
29494996426,8cyclictest41-21ksoftirqd/312:00:143
29494996328,7cyclictest41-21ksoftirqd/311:40:173
29494996328,10cyclictest41-21ksoftirqd/307:30:253
29494996327,8cyclictest41-21ksoftirqd/311:12:473
29494996327,8cyclictest41-21ksoftirqd/307:42:053
29494996327,4cyclictest41-21ksoftirqd/309:25:003
29494996322,4cyclictest41-21ksoftirqd/308:35:143
29494996317,7cyclictest41-21ksoftirqd/309:35:463
29494996226,7cyclictest41-21ksoftirqd/308:05:403
29494996224,7cyclictest41-21ksoftirqd/312:40:003
134491620,4ptp4l0-21swapper/107:55:171
29494996128,7cyclictest41-21ksoftirqd/307:50:283
29494996127,4cyclictest41-21ksoftirqd/309:05:013
29494996126,6cyclictest41-21ksoftirqd/310:50:003
29494996125,8cyclictest41-21ksoftirqd/307:36:433
29494996125,7cyclictest41-21ksoftirqd/308:54:183
29494996125,7cyclictest41-21ksoftirqd/308:54:183
29494996124,7cyclictest41-21ksoftirqd/311:53:223
134491610,4ptp4l31816-21apt-get07:15:120
29494996031,4cyclictest41-21ksoftirqd/310:55:143
29494996029,7cyclictest41-21ksoftirqd/309:10:283
29494996028,8cyclictest41-21ksoftirqd/307:17:193
29494996027,7cyclictest41-21ksoftirqd/310:33:263
29494996024,9cyclictest41-21ksoftirqd/311:33:333
29494996023,8cyclictest41-21ksoftirqd/312:26:493
134491600,3ptp4l0-21swapper/209:10:252
29494995927,3cyclictest41-21ksoftirqd/309:45:183
29494995925,7cyclictest41-21ksoftirqd/310:54:463
29494995925,7cyclictest41-21ksoftirqd/308:44:593
29494995924,7cyclictest41-21ksoftirqd/312:05:253
134491590,5ptp4l0-21swapper/109:45:111
134491590,3ptp4l0-21swapper/108:30:201
2949499585,7cyclictest18237-21apt-get10:15:013
29494995821,9cyclictest41-21ksoftirqd/309:30:223
134491580,4ptp4l0-21swapper/308:45:283
134491580,4ptp4l0-21swapper/012:08:560
134491580,4ptp4l0-21swapper/008:07:040
29494995730,7cyclictest41-21ksoftirqd/312:10:253
29494995726,6cyclictest41-21ksoftirqd/310:25:253
29494995720,8cyclictest41-21ksoftirqd/311:27:193
134491570,3ptp4l25-21ksoftirqd/107:06:201
2949499565,4cyclictest41-21ksoftirqd/309:20:003
29494995626,8cyclictest41-21ksoftirqd/311:20:213
29494995622,8cyclictest41-21ksoftirqd/308:24:013
134491560,3ptp4l0-21swapper/307:10:173
134491560,3ptp4l0-21swapper/110:16:401
134491560,3ptp4l0-21swapper/107:45:161
134491560,3ptp4l0-21swapper/007:50:160
29494995531,10cyclictest41-21ksoftirqd/310:20:213
29494995526,8cyclictest41-21ksoftirqd/307:55:273
29494995421,7cyclictest41-21ksoftirqd/310:02:423
29494995417,8cyclictest41-21ksoftirqd/310:10:013
134491540,4ptp4l0-21swapper/007:32:230
134491540,3ptp4l0-21swapper/110:50:181
134491540,3ptp4l0-21swapper/109:35:041
134491540,3ptp4l0-21swapper/009:55:270
134491540,3ptp4l0-21swapper/008:26:300
2949499535,6cyclictest41-21ksoftirqd/312:20:143
2949499535,3cyclictest121rcu_preempt12:18:153
2949499533,8cyclictest41-21ksoftirqd/308:30:173
29494995322,7cyclictest41-21ksoftirqd/312:34:443
134491530,4ptp4l0-21swapper/010:58:310
134491530,3ptp4l0-21swapper/109:44:591
134491530,3ptp4l0-21swapper/009:15:250
2949499526,3cyclictest41-21ksoftirqd/309:50:153
2949499524,7cyclictest41-21ksoftirqd/310:45:003
29494995219,7cyclictest41-21ksoftirqd/311:59:233
2949499521,6cyclictest41-21ksoftirqd/311:00:233
134491520,5ptp4l0-21swapper/010:14:410
134491520,5ptp4l0-21swapper/008:31:200
134491520,4ptp4l0-21swapper/008:45:590
134491520,12ptp4l0-21swapper/010:25:140
2949499512,7cyclictest0-21swapper/308:25:213
29494995119,7cyclictest41-21ksoftirqd/311:06:053
2949499511,7cyclictest41-21ksoftirqd/307:30:003
2949499510,6cyclictest41-21ksoftirqd/311:15:163
29491995121,4cyclictest9-21ksoftirqd/008:00:000
134491510,4ptp4l0-21swapper/310:15:143
134491510,4ptp4l0-21swapper/011:56:230
2949499500,4cyclictest121rcu_preempt09:25:273
29491995015,4cyclictest9-21ksoftirqd/010:45:110
134491500,4ptp4l0-21swapper/109:14:401
134491500,4ptp4l0-21swapper/009:49:000
134491500,3ptp4l0-21swapper/307:24:143
134491500,12ptp4l0-21swapper/012:35:330
2949499493,7cyclictest41-21ksoftirqd/307:49:373
2949499492,6cyclictest0-21swapper/308:55:253
29494994916,7cyclictest41-21ksoftirqd/311:35:253
29494994916,7cyclictest41-21ksoftirqd/311:35:253
29491994919,7cyclictest9-21ksoftirqd/012:10:230
134491490,4ptp4l0-21swapper/209:26:322
134491490,4ptp4l0-21swapper/112:10:091
134491490,4ptp4l0-21swapper/110:26:291
134491490,4ptp4l0-21swapper/110:06:511
134491490,4ptp4l0-21swapper/009:10:470
134491490,4ptp4l0-21swapper/008:56:250
134491490,3ptp4l12490-21irqrtprio12:20:181
134491490,3ptp4l0-21swapper/008:04:330
134491490,3ptp4l0-21swapper/008:04:330
29494994816,8cyclictest41-21ksoftirqd/309:06:423
29491994816,8cyclictest9-21ksoftirqd/012:00:120
29491994815,5cyclictest9-21ksoftirqd/008:24:490
134491480,4ptp4l0-21swapper/210:21:062
134491480,4ptp4l0-21swapper/108:42:071
134491480,4ptp4l0-21swapper/011:22:410
134491480,4ptp4l0-21swapper/011:08:420
134491480,4ptp4l0-21swapper/010:54:420
134491480,4ptp4l0-21swapper/010:43:510
134491480,3ptp4l0-21swapper/209:51:362
134491480,3ptp4l0-21swapper/108:05:471
134491480,3ptp4l0-21swapper/009:34:050
2949499473,2cyclictest121rcu_preempt09:40:153
29493994741,3cyclictest7100-21latency_hist12:10:002
29491994711,4cyclictest9-21ksoftirqd/008:11:260
134491470,5ptp4l0-21swapper/211:38:092
134491470,5ptp4l0-21swapper/211:38:082
134491470,4ptp4l0-21swapper/211:00:342
134491470,4ptp4l0-21swapper/011:43:480
134491470,4ptp4l0-21swapper/011:15:100
134491470,4ptp4l0-21swapper/008:36:560
134491470,4ptp4l0-21swapper/007:37:200
134491470,4ptp4l0-21swapper/007:12:370
134491470,3ptp4l0-21swapper/109:25:111
134491470,3ptp4l0-21swapper/107:42:341
134491470,3ptp4l0-21swapper/010:35:070
134491460,9ptp4l0-21swapper/111:40:161
134491460,4ptp4l0-21swapper/212:36:172
134491460,4ptp4l0-21swapper/011:36:280
134491460,4ptp4l0-21swapper/011:36:270
134491460,4ptp4l0-21swapper/010:09:330
134491460,4ptp4l0-21swapper/009:41:090
134491460,4ptp4l0-21swapper/008:52:360
134491460,4ptp4l0-21swapper/008:52:360
134491460,3ptp4l0-21swapper/110:56:091
134491460,3ptp4l0-21swapper/108:58:381
29493994540,3cyclictest6102-21latency_hist08:40:002
29491994537,2cyclictest134491ptp4l09:05:230
134491450,5ptp4l0-21swapper/210:30:122
134491450,4ptp4l0-21swapper/107:20:191
134491450,3ptp4l0-21swapper/211:18:572
134491450,3ptp4l0-21swapper/107:50:171
134491450,3ptp4l0-21swapper/107:38:031
134491450,3ptp4l0-21swapper/107:34:391
134491450,3ptp4l0-21swapper/011:50:110
2949499440,7cyclictest121rcu_preempt09:59:213
29491994412,3cyclictest9-21ksoftirqd/011:01:060
134491440,4ptp4l0-21swapper/109:33:121
2949199439,4cyclictest9-21ksoftirqd/011:45:130
29491994313,7cyclictest9-21ksoftirqd/012:20:180
29491994313,10cyclictest9-21ksoftirqd/009:22:420
134491430,9ptp4l0-21swapper/011:33:240
134491430,4ptp4l2378-21apt-get09:40:132
134491430,4ptp4l0-21swapper/210:50:452
134491430,4ptp4l0-21swapper/207:16:232
134491430,4ptp4l0-21swapper/108:05:001
134491430,4ptp4l0-21swapper/108:05:001
134491430,3ptp4l0-21swapper/109:08:031
134491430,13ptp4l0-21swapper/007:20:180
29493994237,3cyclictest33-21ksoftirqd/208:20:002
2949199425,6cyclictest9-21ksoftirqd/009:50:180
2949199425,2cyclictest121rcu_preempt07:25:160
29491994237,3cyclictest9-21ksoftirqd/009:40:010
134491420,9ptp4l0-21swapper/208:24:162
134491420,9ptp4l0-21swapper/010:21:510
134491420,8ptp4l0-21swapper/210:35:112
134491420,8ptp4l0-21swapper/210:09:172
134491420,5ptp4l30213-21apt-get11:50:121
134491420,5ptp4l13236-21ls11:10:262
134491420,4ptp4l2694-21apt-get12:00:111
134491420,4ptp4l0-21swapper/212:21:562
134491420,4ptp4l0-21swapper/109:18:271
134491420,4ptp4l0-21swapper/108:48:341
134491420,3ptp4l18648-21apt-get11:25:111
134491420,3ptp4l11009-21apt-get07:40:120
134491420,3ptp4l0-21swapper/212:11:072
29493994135,3cyclictest33-21ksoftirqd/208:00:002
29492994136,3cyclictest25-21ksoftirqd/108:40:001
2949199414,3cyclictest9-21ksoftirqd/012:19:590
2949199414,3cyclictest10648-21kworker/0:009:25:040
29491994135,3cyclictest9-21ksoftirqd/010:35:000
29491994124,4cyclictest9-21ksoftirqd/011:25:270
29491994111,5cyclictest9-21ksoftirqd/008:40:180
134491410,5ptp4l7510-21ntpq07:30:232
134491410,5ptp4l0-21swapper/210:15:112
134491410,4ptp4l1741-21apt-get07:20:142
134491410,4ptp4l16499-21apt-get12:30:102
134491410,4ptp4l14416-21df12:25:151
134491410,4ptp4l0-21swapper/112:35:301
134491410,4ptp4l0-21swapper/011:10:210
134491410,4ptp4l0-21swapper/007:45:250
134491410,3ptp4l12156-21meminfo08:50:201
134491410,3ptp4l12156-21meminfo08:50:201
29493994035,3cyclictest33-21ksoftirqd/212:15:192
29493994035,3cyclictest33-21ksoftirqd/211:00:012
29493994035,3cyclictest33-21ksoftirqd/208:45:002
29493994034,3cyclictest33-21ksoftirqd/207:55:002
29491994036,2cyclictest9-21ksoftirqd/010:15:200
134491400,7ptp4l0-21swapper/008:15:120
134491400,5ptp4l0-21swapper/012:25:150
134491400,5ptp4l0-21swapper/010:00:230
134491400,4ptp4l27585-21hddtemp_smartct08:15:161
134491400,4ptp4l17885-21sshd09:02:380
134491400,4ptp4l0-21swapper/212:03:512
134491400,4ptp4l0-21swapper/209:08:042
134491400,4ptp4l0-21swapper/110:45:151
134491400,4ptp4l0-21swapper/110:30:201
134491400,4ptp4l0-21swapper/108:20:241
134491400,4ptp4l0-21swapper/108:10:161
134491400,3ptp4l30284-21apt-get10:40:132
134491400,3ptp4l27908-21apt-get11:45:112
134491400,3ptp4l18064-21ls12:30:271
134491400,3ptp4l16034-21apt-get09:00:121
134491400,3ptp4l14987-21memory11:15:211
134491400,3ptp4l11009-21apt-get07:40:122
29492993934,3cyclictest25-21ksoftirqd/112:20:001
134491390,5ptp4l0-21swapper/209:57:552
134491390,5ptp4l0-21swapper/209:21:332
134491390,5ptp4l0-21swapper/208:55:132
134491390,5ptp4l0-21swapper/109:55:141
134491390,4ptp4l10014-21iostat_ios11:05:182
134491390,4ptp4l0-21swapper/211:58:442
134491390,4ptp4l0-21swapper/211:30:172
134491390,4ptp4l0-21swapper/211:25:192
134491390,4ptp4l0-21swapper/211:20:222
134491390,4ptp4l0-21swapper/210:45:192
134491390,4ptp4l0-21swapper/210:28:592
134491390,4ptp4l0-21swapper/210:12:522
134491390,4ptp4l0-21swapper/210:00:162
134491390,4ptp4l0-21swapper/209:17:032
134491390,4ptp4l0-21swapper/209:00:582
134491390,4ptp4l0-21swapper/208:50:502
134491390,4ptp4l0-21swapper/208:50:502
134491390,4ptp4l0-21swapper/208:31:452
134491390,4ptp4l0-21swapper/208:08:102
134491390,4ptp4l0-21swapper/207:35:072
134491390,4ptp4l0-21swapper/207:12:002
134491390,4ptp4l0-21swapper/111:36:421
134491390,4ptp4l0-21swapper/111:36:421
134491390,4ptp4l0-21swapper/110:20:401
134491390,4ptp4l0-21swapper/110:00:191
134491390,4ptp4l0-21swapper/109:22:231
134491390,4ptp4l0-21swapper/107:15:141
134491390,4ptp4l0-21swapper/012:30:130
134491390,3ptp4l6337-21python12:05:251
134491390,3ptp4l4289-21cstates07:25:152
134491390,3ptp4l31469-21ps11:50:252
134491390,3ptp4l30496-21df10:40:141
134491390,3ptp4l27894-21/usr/sbin/munin11:45:291
134491390,3ptp4l12163-21hddtemp_smartct11:10:151
134491390,3ptp4l0-21swapper/209:47:022
134491390,3ptp4l0-21swapper/208:00:422
134491390,3ptp4l0-21swapper/208:00:422
134491390,3ptp4l0-21swapper/207:48:432
134491390,3ptp4l0-21swapper/111:30:241
29493993833,3cyclictest33-21ksoftirqd/209:30:132
29493993827,9cyclictest33-21ksoftirqd/209:35:272
134491380,5ptp4l0-21swapper/208:45:162
134491380,4ptp4l0-21swapper/212:25:392
134491380,4ptp4l0-21swapper/211:40:252
134491380,4ptp4l0-21swapper/111:55:181
134491380,4ptp4l0-21swapper/110:35:341
134491380,4ptp4l0-21swapper/110:14:011
134491380,4ptp4l0-21swapper/107:14:041
134491380,3ptp4l0-21swapper/208:11:252
134491380,3ptp4l0-21swapper/111:06:071
134491380,3ptp4l0-21swapper/111:00:081
134491380,3ptp4l0-21swapper/109:52:141
134491370,4ptp4l0-21swapper/111:21:581
134491370,3ptp4l0-21swapper/208:25:542
134491370,3ptp4l0-21swapper/107:29:161
46198300,5rtkit-daemon0-21swapper/207:09:582
273522205,9sleep30-21swapper/307:05:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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