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2025-12-14 - 18:45
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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 Sun Dec 14, 2025 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1698121620,6sleep31192299cyclictest12:00:013
111482870,6sleep31192299cyclictest09:25:363
1192199861,82cyclictest18286-21sed07:20:422
1192099727,63cyclictest2041-21kworker/1:108:01:221
11919997212,18cyclictest12557-21grep11:50:240
1192099677,16cyclictest448-21dbus-daemon09:45:391
1192099669,10cyclictest30161-21chrt08:55:411
1192099662,62cyclictest26840-21kworker/1:010:56:211
11919996514,11cyclictest26064-21taskset12:16:260
134491640,5ptp4l11160-21ls07:05:340
11919996412,18cyclictest6575-21/usr/sbin/munin10:25:340
11920996312,17cyclictest2524-21chrt07:58:541
11920996312,16cyclictest25871-21chrt09:57:431
11920996311,16cyclictest5089-21chrt10:23:101
11920996311,15cyclictest484-21chrt11:22:351
11919996314,11cyclictest4993-21seq10:21:570
201932620,4sleep00-21swapper/009:45:350
134491620,3ptp4l0-21swapper/310:18:193
11921996237,3cyclictest33-21ksoftirqd/211:25:422
11921996231,7cyclictest33-21ksoftirqd/210:00:002
11920996212,16cyclictest11805-21chrt08:19:431
11920996211,16cyclictest16659-21chrt11:57:181
11920996210,16cyclictest23043-21chrt07:32:211
11919996212,12cyclictest30913-21sed07:50:270
134491610,3ptp4l23864-21chrt08:45:162
11921996125,6cyclictest33-21ksoftirqd/211:55:302
1192099619,10cyclictest7066-21chrt09:16:031
11920996111,15cyclictest25503-21chrt07:36:421
11920996110,16cyclictest19254-21chrt12:02:231
11919996115,15cyclictest558-21taskset11:23:290
11919996114,11cyclictest30474-21seq08:59:420
61842600,4sleep00-21swapper/011:35:300
120012600,4sleep30-21swapper/311:46:293
1192099609,11cyclictest30694-21chrt11:18:381
1192099609,10cyclictest14453-21seq11:53:281
1192099608,11cyclictest28485-21chrt12:22:441
1192099608,11cyclictest233702chrt08:41:501
11920996011,10cyclictest30275-21chrt07:48:511
1191999609,18cyclictest20491-21cat07:25:440
11919996013,10cyclictest17851-21perl12:00:290
1192099599,11cyclictest21264-21chrt08:39:331
1192099599,11cyclictest1317-21runrttasks10:52:101
11920995912,16cyclictest23558-21chrt09:52:301
11920995911,15cyclictest2790-21chrt11:26:241
11920995911,11cyclictest28346-21chrt10:04:451
11920995910,11cyclictest1317-21runrttasks09:22:481
11919995915,18cyclictest25451-21timedrift09:55:390
11919995914,11cyclictest28528-21taskset12:23:180
134491580,3ptp4l0-21swapper/212:30:012
134491580,3ptp4l0-21swapper/211:20:372
11921995824,3cyclictest33-21ksoftirqd/210:10:002
11921995818,3cyclictest33-21ksoftirqd/207:45:382
1192099589,11cyclictest1317-21runrttasks09:39:371
11920995812,11cyclictest14583-21chrt10:44:051
11920995812,11cyclictest14583-21chrt10:44:051
11919995816,16cyclictest16454-21taskset09:38:230
11919995815,15cyclictest18718-21taskset09:42:000
11919995813,16cyclictest29758-21irqrtprio12:25:320
11919995813,11cyclictest21309-21seq10:56:190
11919995813,11cyclictest1317-21runrttasks12:11:530
134491570,3ptp4l0-21swapper/209:25:272
11921995724,6cyclictest33-21ksoftirqd/210:15:322
11921995719,6cyclictest33-21ksoftirqd/212:25:002
1192099579,11cyclictest1317-21runrttasks11:09:421
1192099577,12cyclictest1317-21runrttasks08:54:151
11920995712,10cyclictest2888-21chrt10:19:411
11920995710,16cyclictest30768-21chrt09:00:141
11919995715,11cyclictest1317-21runrttasks11:43:000
255662560,5sleep30-21swapper/308:45:413
178782560,4sleep30-21swapper/310:50:323
134491560,4ptp4l0-21swapper/309:30:213
11921995626,4cyclictest33-21ksoftirqd/211:05:292
11921995625,4cyclictest33-21ksoftirqd/212:38:462
11921995621,6cyclictest33-21ksoftirqd/208:25:002
1192099569,16cyclictest18531-21chrt07:23:221
1192099569,12cyclictest1317-21runrttasks11:41:081
1192099568,11cyclictest1317-21runrttasks10:45:561
11920995611,17cyclictest14610-21chrt08:25:171
11920995611,16cyclictest23825-21chrt12:12:061
11920995611,11cyclictest30509-21chrt10:08:021
11919995615,7cyclictest17199-21iostat07:20:320
11919995615,16cyclictest23039-21taskset07:32:190
11919995615,15cyclictest11573-21taskset08:16:470
11919995615,10cyclictest2500-21seq07:58:350
11919995614,39cyclictest32271-21/usr/sbin/munin10:10:370
134491550,4ptp4l0-21swapper/307:12:323
134491550,3ptp4l0-21swapper/310:41:033
134491550,3ptp4l0-21swapper/310:41:023
134491550,2ptp4l0-21swapper/307:20:433
134491550,13ptp4l10023-21hddtemp_smartct07:05:241
11921995523,5cyclictest33-21ksoftirqd/210:20:352
11920995510,15cyclictest12020-21chrt11:46:431
11919995515,12cyclictest14493-21seq10:42:550
11919995515,12cyclictest14493-21seq10:42:550
11919995514,11cyclictest30772-21taskset11:19:400
11919995514,11cyclictest16205-21seq07:18:570
11919995512,11cyclictest19083-21taskset10:52:160
134491540,4ptp4l0-21swapper/308:22:533
11921995429,7cyclictest33-21ksoftirqd/208:15:332
11921995423,6cyclictest33-21ksoftirqd/210:40:002
11921995423,5cyclictest33-21ksoftirqd/209:10:292
11921995423,5cyclictest33-21ksoftirqd/209:10:292
11921995422,5cyclictest33-21ksoftirqd/208:04:592
11921995419,6cyclictest33-21ksoftirqd/209:00:332
1192099549,9cyclictest0-21swapper/107:12:221
1192099549,10cyclictest23831-21taskset11:03:541
1192099548,11cyclictest1317-21runrttasks09:41:501
11920995411,15cyclictest26318-21taskset12:19:401
11920995411,10cyclictest13810-21chrt08:20:441
11920995410,15cyclictest7387-21chrt10:28:131
11919995410,17cyclictest12112-21/usr/sbin/munin08:20:300
134491530,4ptp4l0-21swapper/310:09:423
134491530,4ptp4l0-21swapper/208:57:222
134491530,3ptp4l0-21swapper/309:15:313
134491530,3ptp4l0-21swapper/307:37:333
134491530,3ptp4l0-21swapper/307:29:333
134491530,3ptp4l0-21swapper/209:50:382
134491530,10ptp4l0-21swapper/311:25:253
11921995322,5cyclictest33-21ksoftirqd/209:45:292
11921995322,5cyclictest33-21ksoftirqd/207:10:592
11921995321,5cyclictest33-21ksoftirqd/210:10:282
11921995321,4cyclictest33-21ksoftirqd/207:32:332
11921995320,3cyclictest33-21ksoftirqd/208:40:002
11921995319,5cyclictest33-21ksoftirqd/210:50:362
1192099538,14cyclictest8449-21meminfo08:10:331
11920995312,15cyclictest14199-21chrt09:33:521
11920995310,11cyclictest27761-21taskset07:40:591
11919995316,10cyclictest30338-21taskset10:05:540
134491520,4ptp4l7799-21apt-get10:30:262
134491520,4ptp4l0-21swapper/308:30:493
134491520,4ptp4l0-21swapper/307:45:323
134491520,3ptp4l0-21swapper/311:10:223
134491520,3ptp4l0-21swapper/309:38:213
11921995223,6cyclictest33-21ksoftirqd/211:55:002
11921995221,5cyclictest33-21ksoftirqd/207:50:332
11921995221,4cyclictest33-21ksoftirqd/210:40:262
11921995221,4cyclictest33-21ksoftirqd/210:40:262
11921995221,3cyclictest33-21ksoftirqd/211:14:592
11921995220,5cyclictest33-21ksoftirqd/208:50:302
11921995219,6cyclictest33-21ksoftirqd/212:10:282
11921995219,5cyclictest33-21ksoftirqd/209:30:372
1192099529,11cyclictest1317-21runrttasks11:12:111
1192099529,11cyclictest1317-21runrttasks09:05:181
1192099528,11cyclictest1317-21runrttasks10:10:101
11920995211,17cyclictest4937-21chrt09:13:151
11920995211,17cyclictest4937-21chrt09:13:151
11920995211,16cyclictest9784-21chrt10:34:311
11920995211,16cyclictest21472-21chrt12:06:251
11920995210,16cyclictest30663-21chrt12:26:171
11920995210,15cyclictest18768-21taskset08:31:551
11919995216,17cyclictest16472-21taskset08:27:390
11919995212,7cyclictest134491ptp4l08:45:270
134491510,4ptp4l2747-21runrttasks09:09:383
134491510,4ptp4l0-21swapper/310:35:553
134491510,3ptp4l0-21swapper/309:12:163
134491510,3ptp4l0-21swapper/309:12:163
134491510,3ptp4l0-21swapper/308:39:583
134491510,2ptp4l15673-21strings08:25:353
1192199515,3cyclictest121rcu_preempt07:30:012
11921995123,3cyclictest33-21ksoftirqd/207:57:432
11921995122,3cyclictest33-21ksoftirqd/208:30:262
11921995121,5cyclictest33-21ksoftirqd/212:25:352
11921995120,6cyclictest33-21ksoftirqd/209:05:272
11921995119,6cyclictest33-21ksoftirqd/211:50:002
11921995118,6cyclictest33-21ksoftirqd/211:35:332
11921995118,4cyclictest33-21ksoftirqd/209:40:312
11920995110,17cyclictest25689-21chrt08:47:071
11920995110,15cyclictest7474-21chrt11:37:401
11920995110,13cyclictest1317-21runrttasks08:05:181
11919995114,9cyclictest23596-21runrttasks11:01:010
11919995113,16cyclictest2394-21processes12:35:380
11919995112,36cyclictest25017-21cat07:35:380
134491500,4ptp4l0-21swapper/309:54:413
134491500,4ptp4l0-21swapper/212:16:382
134491500,3ptp4l0-21swapper/312:35:133
134491500,3ptp4l0-21swapper/312:11:493
11921995019,5cyclictest33-21ksoftirqd/211:15:362
11921995016,5cyclictest33-21ksoftirqd/207:35:272
11919995012,11cyclictest525-21taskset12:31:280
134491490,3ptp4l0-21swapper/312:26:583
134491490,3ptp4l0-21swapper/311:50:263
134491490,3ptp4l0-21swapper/309:59:173
134491490,3ptp4l0-21swapper/308:50:353
11921994915,5cyclictest33-21ksoftirqd/207:40:282
11921994910,5cyclictest33-21ksoftirqd/208:15:002
11920994911,9cyclictest2973-21chrt12:37:011
11920994911,10cyclictest11748-21chrt09:26:541
11920994910,10cyclictest5294-21chrt11:34:071
11919994912,11cyclictest11867-21taskset09:28:280
134491480,6ptp4l0-21swapper/207:09:432
134491480,4ptp4l0-21swapper/312:31:053
134491480,4ptp4l0-21swapper/310:10:293
134491480,4ptp4l0-21swapper/308:08:073
134491480,3ptp4l0-21swapper/310:32:043
134491480,10ptp4l8255-21diskstats11:40:292
11921994823,6cyclictest33-21ksoftirqd/210:00:412
1192199482,2cyclictest121rcu_preempt08:25:592
11921994819,5cyclictest33-21ksoftirqd/210:55:402
11921994816,5cyclictest33-21ksoftirqd/212:00:322
11921994814,5cyclictest33-21ksoftirqd/209:36:452
1192199481,2cyclictest121rcu_preempt11:02:592
11920994810,10cyclictest32426-21chrt07:51:591
134491470,4ptp4l0-21swapper/310:59:463
134491470,3ptp4l0-21swapper/311:35:083
134491470,3ptp4l0-21swapper/311:05:003
134491470,3ptp4l0-21swapper/308:15:193
11921994719,5cyclictest33-21ksoftirqd/209:20:272
11921994715,6cyclictest33-21ksoftirqd/210:45:322
1192099477,7cyclictest19139-21df07:25:281
11919994711,33cyclictest17093-21grep08:30:260
1191999471,11cyclictest0-21swapper/009:31:120
134491460,4ptp4l0-21swapper/311:08:493
134491460,3ptp4l0-21swapper/312:03:353
134491460,3ptp4l0-21swapper/310:45:553
11921994616,5cyclictest33-21ksoftirqd/210:25:262
1192199461,2cyclictest121rcu_preempt07:17:592
1191999461,12cyclictest0-21swapper/011:34:380
1191999460,9cyclictest0-21swapper/011:47:420
134491450,4ptp4l0-21swapper/308:41:093
1192199451,2cyclictest121rcu_preempt11:30:582
1192199450,2cyclictest121rcu_preempt09:17:452
11920994510,11cyclictest472-21chrt12:30:471
1191999450,42cyclictest0-21swapper/008:00:260
1191999450,10cyclictest0-21swapper/009:02:480
134491440,6ptp4l0-21swapper/307:40:233
134491440,5ptp4l0-21swapper/009:10:260
134491440,5ptp4l0-21swapper/009:10:260
134491440,4ptp4l0-21swapper/312:08:503
1192199449,5cyclictest33-21ksoftirqd/208:10:002
11919994417,17cyclictest2902-21seq11:27:530
1191999441,10cyclictest0-21swapper/010:39:100
1191999440,11cyclictest0-21swapper/010:04:130
1191999440,10cyclictest0-21swapper/010:31:050
134491430,9ptp4l0-21swapper/008:40:290
134491430,9ptp4l0-21swapper/008:35:520
134491430,5ptp4l0-21swapper/011:05:350
134491430,3ptp4l5349-21apt-get09:15:260
134491430,3ptp4l0-21swapper/212:05:342
11921994333,3cyclictest33-21ksoftirqd/208:40:282
11919994317,17cyclictest28379-21seq11:13:250
11919994312,10cyclictest9285-21taskset08:11:530
134491420,9ptp4l0-21swapper/010:49:440
134491420,5ptp4l26259-21df07:40:270
134491420,4ptp4l0-21swapper/312:19:113
11919994216,12cyclictest23506-21seq09:51:480
134491410,9ptp4l0-21swapper/308:14:173
134491410,5ptp4l0-21swapper/008:50:340
134491410,4ptp4l5503-21apt-get10:25:263
134491410,4ptp4l1112-21df_inode10:15:280
11919994117,11cyclictest9466-21seq09:22:080
11919994117,11cyclictest6927-21seq08:06:060
11919994117,11cyclictest30273-21seq07:48:490
11919994117,11cyclictest21609-21seq12:08:070
11919994116,11cyclictest16744-21seq11:58:240
1191999410,11cyclictest0-21swapper/009:07:450
134491400,5ptp4l0-21swapper/311:40:423
134491400,5ptp4l0-21swapper/311:20:353
134491400,5ptp4l0-21swapper/308:55:253
134491400,4ptp4l0-21swapper/311:32:133
134491400,4ptp4l0-21swapper/311:15:363
134491400,4ptp4l0-21swapper/309:01:093
134491400,3ptp4l26636-21apt-get12:20:253
1191999400,10cyclictest0-21swapper/007:11:360
46198390,10rtkit-daemon0-21swapper/307:09:183
134491390,5ptp4l0-21swapper/307:50:253
134491390,4ptp4l0-21swapper/310:20:263
134491390,4ptp4l0-21swapper/309:40:403
134491390,4ptp4l0-21swapper/307:55:313
134491390,4ptp4l0-21swapper/307:34:053
134491390,4ptp4l0-21swapper/307:18:343
134491390,4ptp4l0-21swapper/107:19:541
134491390,3ptp4l26342-21apt-get10:00:253
11922993934,3cyclictest41-21ksoftirqd/308:00:433
134491380,5ptp4l0-21swapper/309:45:273
134491380,4ptp4l0-21swapper/309:23:113
11920993811,15cyclictest10061-21chrt10:35:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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