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2026-04-27 - 16:35
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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 Mon Apr 27, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124152730,5sleep00-21swapper/009:18:440
134491670,3ptp4l9-21ksoftirqd/007:05:200
134491620,4ptp4l0-21swapper/308:15:003
134491620,4ptp4l0-21swapper/210:00:202
134491620,20ptp4l0-21swapper/009:10:150
134491610,4ptp4l20762-21ls09:35:222
17098996024,3cyclictest33-21ksoftirqd/211:00:002
17098996024,3cyclictest33-21ksoftirqd/211:00:002
17098995821,4cyclictest33-21ksoftirqd/211:31:472
134491580,4ptp4l0-21swapper/312:15:223
17098995717,5cyclictest33-21ksoftirqd/208:30:292
134491570,3ptp4l0-21swapper/211:35:262
134491560,3ptp4l1301-21snmpd10:39:203
134491560,3ptp4l0-21swapper/209:17:032
134491550,5ptp4l0-21swapper/311:15:113
17098995417,4cyclictest33-21ksoftirqd/212:10:012
17098995413,9cyclictest33-21ksoftirqd/207:30:162
17098995413,5cyclictest33-21ksoftirqd/212:10:242
134491540,4ptp4l0-21swapper/010:10:040
134491540,12ptp4l0-21swapper/011:20:190
134491540,12ptp4l0-21swapper/007:19:580
17098995316,8cyclictest33-21ksoftirqd/210:21:112
17098995313,6cyclictest33-21ksoftirqd/210:35:262
134491530,4ptp4l0-21swapper/208:40:212
17098995215,8cyclictest33-21ksoftirqd/207:56:242
17098995214,9cyclictest33-21ksoftirqd/210:30:232
134491520,5ptp4l0-21swapper/107:08:581
134491520,4ptp4l0-21swapper/309:04:073
134491520,4ptp4l0-21swapper/308:40:303
134491520,4ptp4l0-21swapper/307:54:373
134491520,4ptp4l0-21swapper/211:40:592
134491520,4ptp4l0-21swapper/012:26:550
17098995122,9cyclictest33-21ksoftirqd/209:55:012
17098995117,9cyclictest33-21ksoftirqd/207:45:132
17098995117,3cyclictest33-21ksoftirqd/212:21:172
134491510,3ptp4l0-21swapper/209:14:302
134491510,3ptp4l0-21swapper/208:35:132
1709999504,2cyclictest121rcu_preempt08:35:003
17098995011,7cyclictest33-21ksoftirqd/207:43:282
17099994918,4cyclictest41-21ksoftirqd/311:58:013
1709899499,3cyclictest33-21ksoftirqd/209:50:012
17098994940,2cyclictest33-21ksoftirqd/207:50:162
17098994929,10cyclictest33-21ksoftirqd/208:46:462
17098994914,9cyclictest33-21ksoftirqd/209:25:202
134491490,4ptp4l0-21swapper/309:38:013
134491490,4ptp4l0-21swapper/309:20:553
134491490,4ptp4l0-21swapper/108:25:481
17099994816,4cyclictest41-21ksoftirqd/311:28:443
17099994816,4cyclictest41-21ksoftirqd/311:28:443
1709899489,8cyclictest33-21ksoftirqd/211:55:392
1709899485,2cyclictest33-21ksoftirqd/210:25:242
17098994831,6cyclictest33-21ksoftirqd/208:26:072
1709899481,8cyclictest33-21ksoftirqd/209:45:012
17098994811,8cyclictest33-21ksoftirqd/210:06:312
17098994810,8cyclictest33-21ksoftirqd/207:10:172
134491480,4ptp4l0-21swapper/310:02:153
134491480,4ptp4l0-21swapper/212:37:272
134491480,4ptp4l0-21swapper/211:07:172
134491480,4ptp4l0-21swapper/210:50:422
134491480,4ptp4l0-21swapper/209:55:032
134491480,4ptp4l0-21swapper/010:19:220
134491480,2ptp4l5630-21strings11:20:212
17099994717,4cyclictest41-21ksoftirqd/310:05:153
1709899476,3cyclictest33-21ksoftirqd/212:00:212
1709899474,2cyclictest33-21ksoftirqd/207:26:492
1709899473,2cyclictest33-21ksoftirqd/211:10:502
17098994725,9cyclictest33-21ksoftirqd/208:52:442
17098994713,8cyclictest33-21ksoftirqd/209:05:182
17098994713,4cyclictest33-21ksoftirqd/208:10:172
1709899470,6cyclictest134491ptp4l08:00:122
134491470,5ptp4l0-21swapper/108:46:451
134491470,4ptp4l0-21swapper/307:35:133
134491470,4ptp4l0-21swapper/209:22:332
134491470,4ptp4l0-21swapper/111:00:371
134491470,3ptp4l0-21swapper/310:40:203
134491470,3ptp4l0-21swapper/309:15:353
134491470,3ptp4l0-21swapper/110:15:341
134491470,12ptp4l0-21swapper/310:48:053
17099994615,4cyclictest41-21ksoftirqd/311:40:203
1709999461,2cyclictest121rcu_preempt10:50:583
1709899465,6cyclictest33-21ksoftirqd/207:24:172
1709899465,2cyclictest33-21ksoftirqd/209:00:012
17098994625,9cyclictest33-21ksoftirqd/211:28:582
17098994625,9cyclictest33-21ksoftirqd/211:28:582
17098994615,8cyclictest33-21ksoftirqd/210:40:222
1709899460,6cyclictest12763-21kworker/2:010:47:402
17096994632,4cyclictest9-21ksoftirqd/008:15:340
134491460,4ptp4l0-21swapper/311:13:573
134491460,4ptp4l0-21swapper/309:42:123
134491460,4ptp4l0-21swapper/211:17:502
134491460,4ptp4l0-21swapper/009:48:380
134491460,4ptp4l0-21swapper/007:44:530
134491460,3ptp4l0-21swapper/208:24:322
134491460,3ptp4l0-21swapper/009:30:110
17099994521,3cyclictest41-21ksoftirqd/310:20:353
1709899452,2cyclictest121rcu_preempt09:04:462
17098994511,9cyclictest33-21ksoftirqd/211:50:272
17097994532,4cyclictest25-21ksoftirqd/108:50:281
134491450,9ptp4l0-21swapper/007:46:480
134491450,4ptp4l0-21swapper/312:10:073
134491450,2ptp4l0-21swapper/109:05:261
134491450,10ptp4l0-21swapper/008:51:370
134491450,10ptp4l0-21swapper/007:11:460
46198440,2rtkit-daemon460-21rtkit-daemon10:30:210
17099994414,3cyclictest41-21ksoftirqd/311:50:283
17099994414,3cyclictest41-21ksoftirqd/308:00:183
17098994437,3cyclictest33-21ksoftirqd/212:30:142
17098994426,8cyclictest33-21ksoftirqd/208:15:232
134491440,9ptp4l0-21swapper/009:01:570
134491440,4ptp4l23067-21apt-get12:00:133
134491440,4ptp4l0-21swapper/309:49:223
134491440,4ptp4l0-21swapper/207:18:342
134491440,4ptp4l0-21swapper/009:07:470
1709999435,5cyclictest121rcu_preempt07:46:583
17099994333,3cyclictest41-21ksoftirqd/308:50:233
17099994331,4cyclictest41-21ksoftirqd/308:45:283
17099994311,4cyclictest41-21ksoftirqd/309:55:443
17098994337,3cyclictest33-21ksoftirqd/212:20:002
1709899431,3cyclictest121rcu_preempt11:50:012
1709899431,2cyclictest121rcu_preempt11:03:032
1709899430,2cyclictest30677-21cron07:39:592
134491430,9ptp4l0-21swapper/009:41:280
134491430,5ptp4l0-21swapper/107:10:021
134491430,5ptp4l0-21swapper/010:45:120
134491430,4ptp4l0-21swapper/307:12:113
1709999426,2cyclictest121rcu_preempt11:00:103
17099994238,3cyclictest41-21ksoftirqd/308:40:003
1709899429,9cyclictest33-21ksoftirqd/210:15:302
17098994237,3cyclictest33-21ksoftirqd/210:15:012
1709899420,2cyclictest121rcu_preempt08:09:302
134491420,9ptp4l0-21swapper/009:20:340
134491420,5ptp4l0-21swapper/110:45:221
134491420,5ptp4l0-21swapper/110:25:291
134491420,4ptp4l7386-21iostat12:35:170
134491420,4ptp4l2318-21gnome-shell08:56:590
134491420,4ptp4l0-21swapper/309:28:493
134491420,4ptp4l0-21swapper/109:41:111
134491420,18ptp4l0-21swapper/310:30:543
134491420,10ptp4l0-21swapper/309:05:523
17099994135,3cyclictest41-21ksoftirqd/310:10:583
17099994131,3cyclictest41-21ksoftirqd/310:25:133
17099994129,9cyclictest41-21ksoftirqd/309:10:293
1709999411,2cyclictest137891phc2sys09:00:003
17098994135,3cyclictest33-21ksoftirqd/209:30:122
134491410,6ptp4l0-21swapper/007:55:160
134491410,5ptp4l0-21swapper/012:11:290
134491410,5ptp4l0-21swapper/008:01:260
134491410,4ptp4l29475-21irqstats07:35:190
134491410,4ptp4l0-21swapper/309:53:133
134491410,4ptp4l0-21swapper/308:20:543
134491410,4ptp4l0-21swapper/307:21:573
134491410,4ptp4l0-21swapper/012:15:210
134491410,4ptp4l0-21swapper/011:06:470
134491410,4ptp4l0-21swapper/008:20:260
134491410,3ptp4l3199-21apt-get07:50:120
134491410,3ptp4l2179-21apt-get12:25:102
17099994010,4cyclictest41-21ksoftirqd/307:30:153
134491400,5ptp4l21388-21sed09:35:290
134491400,5ptp4l0-21swapper/312:25:173
134491400,5ptp4l0-21swapper/312:20:153
134491400,5ptp4l0-21swapper/109:45:181
134491400,5ptp4l0-21swapper/009:55:240
134491400,5ptp4l0-21swapper/008:39:090
134491400,4ptp4l8380-21df09:10:141
134491400,4ptp4l7096-21df11:25:140
134491400,4ptp4l7096-21df11:25:140
134491400,4ptp4l24703-21apt-get10:55:030
134491400,4ptp4l24703-21apt-get10:55:030
134491400,4ptp4l11483-21apt-get11:35:133
134491400,4ptp4l0-21swapper/312:35:223
134491400,4ptp4l0-21swapper/308:10:113
134491400,4ptp4l0-21swapper/011:51:280
134491400,4ptp4l0-21swapper/011:47:180
134491400,4ptp4l0-21swapper/011:35:140
134491400,4ptp4l0-21swapper/011:19:390
134491400,4ptp4l0-21swapper/011:11:380
134491400,4ptp4l0-21swapper/010:50:060
134491400,4ptp4l0-21swapper/008:40:290
134491400,3ptp4l683-21irqstats12:20:190
134491400,3ptp4l30946-21apt-get07:40:121
134491400,3ptp4l29318-21diskstats08:45:160
17099993934,3cyclictest41-21ksoftirqd/308:26:583
17099993934,3cyclictest41-21ksoftirqd/307:59:593
17099993934,3cyclictest41-21ksoftirqd/307:17:593
17099993926,4cyclictest41-21ksoftirqd/311:30:233
17099993926,3cyclictest41-21ksoftirqd/312:30:253
134491390,5ptp4l0-21swapper/311:45:173
134491390,5ptp4l0-21swapper/307:40:193
134491390,5ptp4l0-21swapper/108:11:031
134491390,5ptp4l0-21swapper/012:00:130
134491390,4ptp4l5578-21apt-get10:15:023
134491390,4ptp4l0-21swapper/311:20:143
134491390,4ptp4l0-21swapper/310:55:183
134491390,4ptp4l0-21swapper/310:55:183
134491390,4ptp4l0-21swapper/308:05:213
134491390,4ptp4l0-21swapper/112:25:251
134491390,4ptp4l0-21swapper/112:00:211
134491390,4ptp4l0-21swapper/111:28:211
134491390,4ptp4l0-21swapper/111:28:211
134491390,4ptp4l0-21swapper/111:21:391
134491390,4ptp4l0-21swapper/110:35:261
134491390,4ptp4l0-21swapper/110:00:261
134491390,4ptp4l0-21swapper/109:38:481
134491390,4ptp4l0-21swapper/107:30:221
134491390,4ptp4l0-21swapper/012:05:410
134491390,4ptp4l0-21swapper/011:30:130
134491390,4ptp4l0-21swapper/011:00:140
134491390,4ptp4l0-21swapper/010:40:240
134491390,4ptp4l0-21swapper/010:35:540
134491390,4ptp4l0-21swapper/010:25:390
134491390,4ptp4l0-21swapper/010:20:240
134491390,4ptp4l0-21swapper/010:05:380
134491390,4ptp4l0-21swapper/010:00:190
134491390,4ptp4l0-21swapper/009:52:480
134491390,4ptp4l0-21swapper/008:30:470
134491390,4ptp4l0-21swapper/008:26:390
134491390,4ptp4l0-21swapper/008:11:080
134491390,4ptp4l0-21swapper/007:30:020
134491390,4ptp4l0-21swapper/007:27:200
134491390,3ptp4l21701-21meminfo11:55:210
134491390,3ptp4l18384-21ls09:30:183
17099993833,3cyclictest41-21ksoftirqd/311:05:583
17097993822,4cyclictest25-21ksoftirqd/110:20:101
134491380,5ptp4l0-21swapper/307:25:143
134491380,5ptp4l0-21swapper/111:55:591
134491380,4ptp4l0-21swapper/112:35:201
134491380,4ptp4l0-21swapper/112:30:131
134491380,4ptp4l0-21swapper/112:15:111
134491380,4ptp4l0-21swapper/111:45:591
134491380,4ptp4l0-21swapper/111:35:041
134491380,4ptp4l0-21swapper/111:18:151
134491380,4ptp4l0-21swapper/110:06:161
134491380,4ptp4l0-21swapper/109:31:301
134491380,4ptp4l0-21swapper/108:15:311
134491380,4ptp4l0-21swapper/108:05:231
134491380,4ptp4l0-21swapper/107:47:231
134491380,4ptp4l0-21swapper/012:30:360
134491380,4ptp4l0-21swapper/011:40:280
134491380,4ptp4l0-21swapper/008:05:030
134491380,4ptp4l0-21swapper/007:20:030
134491380,3ptp4l0-21swapper/107:35:251
134491370,4ptp4l0-21swapper/312:05:193
134491370,4ptp4l0-21swapper/112:20:021
134491370,4ptp4l0-21swapper/111:14:131
134491370,4ptp4l0-21swapper/110:40:381
134491370,4ptp4l0-21swapper/108:56:541
134491370,4ptp4l0-21swapper/108:40:221
134491370,4ptp4l0-21swapper/108:00:121
134491370,4ptp4l0-21swapper/107:26:421
134491370,4ptp4l0-21swapper/009:25:350
134491370,3ptp4l0-21swapper/110:10:161
134491370,3ptp4l0-21swapper/109:56:101
134491370,3ptp4l0-21swapper/108:21:391
134491370,3ptp4l0-21swapper/107:20:141
134491360,4ptp4l0-21swapper/107:18:311
134491360,3ptp4l32067-21latency_hist11:10:001
134491360,3ptp4l0-21swapper/112:06:421
134491360,3ptp4l0-21swapper/111:41:431
134491360,3ptp4l0-21swapper/110:57:011
134491360,3ptp4l0-21swapper/110:57:011
134491360,3ptp4l0-21swapper/110:53:241
134491360,3ptp4l0-21swapper/109:50:421
134491360,3ptp4l0-21swapper/109:24:241
134491360,3ptp4l0-21swapper/108:39:491
134491360,3ptp4l0-21swapper/108:32:231
134491360,3ptp4l0-21swapper/107:55:441
134491360,3ptp4l0-21swapper/107:50:131
134491350,3ptp4l0-21swapper/111:32:081
134491340,3ptp4l0-21swapper/112:12:551
134491340,3ptp4l0-21swapper/109:17:391
17097993025,3cyclictest25-21ksoftirqd/109:04:041
134491290,3ptp4l0-21swapper/109:25:351
17097992822,4cyclictest25-21ksoftirqd/110:30:491
46198260,5rtkit-daemon0-21swapper/307:09:303
134491250,3ptp4l0-21swapper/111:53:471
154592124,3sleep20-21swapper/207:05:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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