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2026-03-11 - 15:50
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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 Wed Mar 11, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2170021310,5sleep11430599cyclictest12:00:241
134491810,9ptp4l13091-21ntp_states07:05:220
1430799722,28cyclictest0-21swapper/311:05:183
134491710,4ptp4l20275-21apt-get12:00:102
1430799690,28cyclictest16404-21taskset09:31:143
1430799680,65cyclictest32097-21sed07:45:223
1430799660,29cyclictest19228-21chrt10:47:293
1430799660,28cyclictest18655-21chrt08:27:333
1430799640,27cyclictest14610-21chrt10:37:263
134491640,5ptp4l0-21swapper/208:05:132
134491630,4ptp4l25128-21ps09:50:232
1430799620,28cyclictest4993-21taskset07:59:393
134491620,16ptp4l23937-21switchtime12:05:242
1430799612,17cyclictest0-21swapper/308:55:153
1430799612,17cyclictest0-21swapper/308:55:153
1430799610,28cyclictest3672-21taskset12:33:033
1430799610,27cyclictest27964-21taskset07:38:123
1430799610,27cyclictest25763-21taskset07:34:283
134491610,3ptp4l24509-21apt-get11:00:112
134491600,4ptp4l0-21swapper/212:31:282
134491600,4ptp4l0-21swapper/211:28:462
1430799590,29cyclictest11734-21taskset08:12:313
134491590,4ptp4l31836-21apt-get12:25:112
134491590,3ptp4l0-21swapper/309:20:043
1430799580,28cyclictest23146-21taskset08:36:103
1430799580,28cyclictest13970-21taskset08:16:433
1430799580,27cyclictest8263-21taskset11:34:463
1430799580,27cyclictest21093-21taskset07:23:293
134491580,5ptp4l0-21swapper/208:25:122
134491580,4ptp4l0-21swapper/208:30:222
1430799570,28cyclictest24132-21taskset10:58:393
1430799570,27cyclictest21442-21taskset07:25:063
1430799570,26cyclictest26325-21taskset11:02:093
134491570,4ptp4l0-21swapper/212:12:312
134491570,4ptp4l0-21swapper/210:55:002
134491570,3ptp4l0-21swapper/211:35:152
134491570,3ptp4l0-21swapper/210:56:112
1430799563,17cyclictest134491ptp4l08:05:263
1430799560,29cyclictest593-21taskset10:08:403
1430799560,28cyclictest23320-21taskset09:45:423
1430799560,27cyclictest18564-21taskset07:18:313
134491560,4ptp4l0-21swapper/211:43:422
134491560,4ptp4l0-21swapper/210:35:482
134491560,4ptp4l0-21swapper/210:25:542
134491560,4ptp4l0-21swapper/209:00:272
1430799550,28cyclictest21021-21taskset08:33:183
1430799550,28cyclictest16546-21taskset08:24:513
1430799550,27cyclictest2788-21taskset10:11:123
1430799550,17cyclictest134491ptp4l09:50:223
134491550,5ptp4l0-21swapper/107:09:221
134491550,4ptp4l0-21swapper/211:10:422
134491550,4ptp4l0-21swapper/209:15:532
134491550,4ptp4l0-21swapper/209:06:592
134491550,3ptp4l0-21swapper/212:18:502
134491550,3ptp4l0-21swapper/208:50:202
134491550,3ptp4l0-21swapper/207:35:182
134491550,12ptp4l0-21swapper/208:00:152
1430799541,24cyclictest9966-21runrttasks10:29:333
1430799540,27cyclictest6103-21taskset12:39:403
1430799540,21cyclictest32262-21hddtemp_smartct12:25:153
134491540,4ptp4l0-21swapper/210:17:192
134491540,4ptp4l0-21swapper/207:44:142
134491540,4ptp4l0-21swapper/207:13:382
134491540,3ptp4l0-21swapper/208:40:212
309732530,4sleep00-21swapper/012:20:250
1430799530,29cyclictest28942-21taskset12:16:383
1430799530,28cyclictest21720-21taskset10:54:553
134491530,4ptp4l0-21swapper/209:46:342
134491530,4ptp4l0-21swapper/209:11:592
134491530,4ptp4l0-21swapper/007:37:580
134491530,3ptp4l0-21swapper/011:25:080
1430799520,28cyclictest16866-21taskset10:41:383
134491520,4ptp4l2988-21sensors11:20:252
134491520,4ptp4l0-21swapper/212:37:592
134491520,4ptp4l0-21swapper/208:39:542
134491520,4ptp4l0-21swapper/207:55:212
134491520,3ptp4l0-21swapper/207:28:062
1430799510,30cyclictest9399-21seq09:17:483
1430799510,28cyclictest2548-21taskset09:03:173
134491510,4ptp4l0-21swapper/210:43:082
134491510,3ptp4l0-21swapper/207:48:012
1430799505,14cyclictest134491ptp4l08:00:213
1430799500,28cyclictest22046-21seq12:01:313
1430799500,27cyclictest18647-21runrttasks09:35:303
1430799500,26cyclictest16302-21taskset07:14:033
134491500,3ptp4l0-21swapper/210:08:292
134491500,3ptp4l0-21swapper/207:20:542
134491490,4ptp4l0-21swapper/209:42:522
134491490,3ptp4l0-21swapper/211:52:282
134491490,3ptp4l0-21swapper/209:25:582
134491490,3ptp4l0-21swapper/209:25:582
1430799480,31cyclictest30522-21seq10:04:213
1430799480,30cyclictest31160-21seq11:11:493
1430799480,27cyclictest5213-21runrttasks09:10:053
134491480,9ptp4l2325-21llvmpipe-211:05:580
134491480,4ptp4l0-21swapper/210:20:592
134491480,4ptp4l0-21swapper/209:56:492
134491480,4ptp4l0-21swapper/209:39:012
134491480,3ptp4l0-21swapper/208:55:062
134491480,3ptp4l0-21swapper/208:55:062
1430799471,29cyclictest20002-21seq11:59:593
1430799470,26cyclictest1118-21runrttasks11:17:513
134491470,9ptp4l0-21swapper/008:07:000
134491470,3ptp4l0-21swapper/209:32:272
134491470,3ptp4l0-21swapper/110:24:541
1430799460,29cyclictest25556-21seq08:42:213
1430799460,26cyclictest4962-21chrt09:09:443
134491460,9ptp4l0-21swapper/007:30:520
134491460,4ptp4l0-21swapper/208:10:032
1430799450,29cyclictest26637-21seq12:11:303
1430799450,26cyclictest30004-21chrt08:50:313
14304994540,3cyclictest9-21ksoftirqd/010:20:010
134491450,9ptp4l0-21swapper/011:02:270
134491450,9ptp4l0-21swapper/010:13:130
134491450,9ptp4l0-21swapper/008:26:400
134491450,4ptp4l0-21swapper/210:32:162
134491450,4ptp4l0-21swapper/009:44:050
134491450,3ptp4l0-21swapper/208:23:522
134491450,12ptp4l0-21swapper/011:10:030
134491440,9ptp4l0-21swapper/011:24:230
134491440,5ptp4l31570-21irqstats07:45:170
134491440,3ptp4l9768-21ls11:35:203
14305994329,4cyclictest25-21ksoftirqd/111:47:201
1430499435,2cyclictest121rcu_preempt07:40:200
134491430,8ptp4l0-21swapper/008:56:470
134491430,8ptp4l0-21swapper/008:56:470
134491430,5ptp4l0-21swapper/011:35:180
134491430,5ptp4l0-21swapper/010:56:580
134491430,5ptp4l0-21swapper/007:15:200
134491430,4ptp4l31882-21df11:15:162
134491430,4ptp4l12363-21apt-get09:25:133
134491430,4ptp4l12363-21apt-get09:25:133
134491430,4ptp4l0-21swapper/210:14:392
134491430,4ptp4l0-21swapper/010:30:270
1430799420,29cyclictest555-21runrttasks07:50:023
1430799420,27cyclictest27938-21taskset08:48:223
1430799420,13cyclictest134491ptp4l10:20:533
134491420,5ptp4l0-21swapper/311:50:163
134491420,5ptp4l0-21swapper/110:40:141
134491420,5ptp4l0-21swapper/007:55:190
134491420,5ptp4l0-21swapper/007:50:200
134491420,4ptp4l26812-21apt-get11:05:152
134491420,4ptp4l23080-21users08:35:280
134491420,4ptp4l19280-21apt-get09:40:133
134491420,4ptp4l17962-21apt-get11:55:102
134491420,4ptp4l0-21swapper/210:46:432
134491420,4ptp4l0-21swapper/108:35:151
134491420,4ptp4l0-21swapper/012:30:150
134491420,4ptp4l0-21swapper/010:26:170
134491420,4ptp4l0-21swapper/009:22:580
134491420,4ptp4l0-21swapper/009:15:580
134491420,4ptp4l0-21swapper/009:03:250
134491420,4ptp4l0-21swapper/008:16:590
134491420,3ptp4l583-21apt-get07:50:142
134491420,3ptp4l17530-21iostat_ios09:35:160
134491420,3ptp4l13716-21memory10:35:200
134491420,3ptp4l10064-21apt-get09:20:112
134491420,3ptp4l10027-21apt-get10:30:043
1430799410,28cyclictest27962-21chrt09:56:183
1430799410,27cyclictest5158-21taskset10:17:073
1430499413,3cyclictest121rcu_preempt11:35:000
1430499412,2cyclictest121rcu_preempt08:51:020
134491410,6ptp4l22904-21mailstats09:45:250
134491410,5ptp4l0-21swapper/312:20:123
134491410,5ptp4l0-21swapper/211:30:142
134491410,4ptp4l0-21swapper/311:44:383
134491410,4ptp4l0-21swapper/210:00:112
134491410,4ptp4l0-21swapper/108:15:241
134491410,4ptp4l0-21swapper/012:35:290
134491410,4ptp4l0-21swapper/012:13:110
134491410,4ptp4l0-21swapper/011:18:040
134491410,4ptp4l0-21swapper/010:51:140
134491410,4ptp4l0-21swapper/009:53:060
134491410,4ptp4l0-21swapper/009:31:390
134491410,4ptp4l0-21swapper/009:25:060
134491410,4ptp4l0-21swapper/009:25:060
134491410,4ptp4l0-21swapper/009:10:330
134491410,4ptp4l0-21swapper/009:07:310
134491410,4ptp4l0-21swapper/008:47:060
134491410,4ptp4l0-21swapper/008:43:390
134491410,3ptp4l6248-21memory08:00:210
134491410,3ptp4l4399-21ls07:55:261
134491410,3ptp4l29488-21apt-get12:20:112
134491410,2ptp4l13361-21apt-get11:45:112
1430599400,3cyclictest121rcu_preempt09:19:591
134491400,5ptp4l21380-21ntpq12:00:200
134491400,5ptp4l0-21swapper/312:05:173
134491400,5ptp4l0-21swapper/108:34:061
134491400,4ptp4l7187-21meminfo11:30:181
134491400,4ptp4l0-21swapper/208:19:502
134491400,4ptp4l0-21swapper/207:15:142
134491400,4ptp4l0-21swapper/111:11:511
134491400,4ptp4l0-21swapper/110:45:271
134491400,4ptp4l0-21swapper/109:05:271
134491400,4ptp4l0-21swapper/108:00:201
134491400,4ptp4l0-21swapper/012:16:360
134491400,4ptp4l0-21swapper/012:05:190
134491400,4ptp4l0-21swapper/011:59:110
134491400,4ptp4l0-21swapper/011:50:270
134491400,4ptp4l0-21swapper/011:45:260
134491400,4ptp4l0-21swapper/010:45:180
134491400,4ptp4l0-21swapper/010:40:520
134491400,4ptp4l0-21swapper/010:22:160
134491400,4ptp4l0-21swapper/010:08:130
134491400,4ptp4l0-21swapper/010:01:010
134491400,4ptp4l0-21swapper/009:56:580
134491400,4ptp4l0-21swapper/008:30:240
134491400,4ptp4l0-21swapper/008:21:530
134491400,4ptp4l0-21swapper/008:13:220
134491400,4ptp4l0-21swapper/007:26:200
134491400,4ptp4l0-21swapper/007:20:060
134491400,3ptp4l3944-21apt-get11:25:123
134491400,3ptp4l28689-21diskstats07:40:163
134491400,3ptp4l2768-21ntp_states11:20:233
134491400,3ptp4l0-21swapper/012:25:590
134491400,3ptp4l0-21swapper/011:40:250
14305993935,3cyclictest25-21ksoftirqd/110:55:001
14305993934,3cyclictest25-21ksoftirqd/107:20:011
1430599390,3cyclictest121rcu_preempt12:40:001
134491390,4ptp4l27250-21phc2sys-jitter07:35:241
134491390,4ptp4l0-21swapper/311:45:063
134491390,4ptp4l0-21swapper/208:48:012
134491390,4ptp4l0-21swapper/207:30:212
134491390,4ptp4l0-21swapper/112:16:341
134491390,4ptp4l0-21swapper/112:14:031
134491390,4ptp4l0-21swapper/111:55:271
134491390,4ptp4l0-21swapper/111:00:491
134491390,4ptp4l0-21swapper/108:13:291
134491390,4ptp4l0-21swapper/107:33:571
134491390,4ptp4l0-21swapper/107:27:501
134491390,3ptp4l0-21swapper/007:10:360
14305993833,3cyclictest25-21ksoftirqd/112:35:001
14305993833,3cyclictest25-21ksoftirqd/111:20:181
14305993833,3cyclictest25-21ksoftirqd/108:50:241
14305993833,3cyclictest25-21ksoftirqd/107:15:011
14305993823,4cyclictest25-21ksoftirqd/111:10:001
1430599381,3cyclictest121rcu_preempt10:20:001
134491380,4ptp4l12347-21chrt10:32:591
134491380,4ptp4l0-21swapper/111:50:151
134491380,4ptp4l0-21swapper/110:01:331
134491380,4ptp4l0-21swapper/107:51:281
134491380,4ptp4l0-21swapper/107:40:201
134491380,3ptp4l0-21swapper/110:29:201
134491380,3ptp4l0-21swapper/109:47:331
14305993732,3cyclictest25-21ksoftirqd/109:35:181
14305993732,3cyclictest25-21ksoftirqd/108:55:181
14305993732,3cyclictest25-21ksoftirqd/108:55:181
134491370,3ptp4l0-21swapper/110:11:531
134491370,3ptp4l0-21swapper/109:57:391
134491370,3ptp4l0-21swapper/109:44:021
134491370,3ptp4l0-21swapper/108:06:121
14305993632,2cyclictest25-21ksoftirqd/111:35:121
14305993631,3cyclictest25-21ksoftirqd/112:25:001
14305993631,3cyclictest25-21ksoftirqd/107:20:141
14305993630,4cyclictest25-21ksoftirqd/111:15:231
134491360,4ptp4l0-21swapper/109:29:261
134491360,4ptp4l0-21swapper/109:29:261
134491360,4ptp4l0-21swapper/107:47:571
134491360,3ptp4l0-21swapper/111:28:081
134491360,3ptp4l0-21swapper/110:56:471
134491360,3ptp4l0-21swapper/108:41:091
134491360,3ptp4l0-21swapper/108:26:121
14305993531,3cyclictest25-21ksoftirqd/109:14:591
14305993531,2cyclictest25-21ksoftirqd/109:20:181
14305993529,3cyclictest25-21ksoftirqd/108:25:011
14305993431,2cyclictest25-21ksoftirqd/111:40:181
14305993430,2cyclictest25-21ksoftirqd/110:40:001
14305993419,3cyclictest25-21ksoftirqd/112:25:161
14305993419,3cyclictest25-21ksoftirqd/110:05:161
14305993319,3cyclictest25-21ksoftirqd/109:50:201
134491330,4ptp4l0-21swapper/109:01:501
14305993025,3cyclictest25-21ksoftirqd/112:09:511
14305993024,3cyclictest25-21ksoftirqd/108:45:171
14305992822,4cyclictest25-21ksoftirqd/109:32:081
137802203,3sleep30-21swapper/307:07:073
119752175,6sleep20-21swapper/207:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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