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2026-04-11 - 19:42
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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 Sat Apr 11, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1363621630,5sleep2157799cyclictest12:15:132
286721560,3sleep2157799cyclictest11:50:222
1419421420,7sleep0157599cyclictest07:35:210
271832800,6sleep10-21swapper/111:35:011
271832800,6sleep10-21swapper/111:35:001
134491700,5ptp4l0-21swapper/210:31:392
134491680,4ptp4l0-21swapper/207:25:242
134491650,4ptp4l0-21swapper/211:02:532
134491650,4ptp4l0-21swapper/211:02:532
1578996429,8cyclictest41-21ksoftirqd/310:35:003
1578996428,4cyclictest41-21ksoftirqd/308:40:133
134491640,3ptp4l0-21swapper/212:14:552
157899637,11cyclictest0-21swapper/311:55:073
134491630,5ptp4l0-21swapper/107:27:511
134491630,10ptp4l0-21swapper/309:03:123
134491620,3ptp4l0-21swapper/210:35:092
1578996028,8cyclictest41-21ksoftirqd/307:40:153
134491600,4ptp4l0-21swapper/311:30:173
134491600,4ptp4l0-21swapper/311:30:163
134491600,3ptp4l8728-21apt-get08:35:142
157899595,7cyclictest0-21swapper/312:10:223
134491590,3ptp4l0-21swapper/311:50:123
39432580,4sleep0101ktimersoftd/009:35:000
157899585,11cyclictest0-21swapper/309:20:153
134491580,4ptp4l0-21swapper/209:32:262
134491580,3ptp4l0-21swapper/011:00:290
134491580,3ptp4l0-21swapper/011:00:280
134491570,4ptp4l20136-21latency_hist11:20:002
134491570,4ptp4l0-21swapper/311:40:283
134491570,3ptp4l0-21swapper/208:54:502
1578995627,10cyclictest41-21ksoftirqd/307:30:003
134491560,4ptp4l0-21swapper/212:35:162
157899557,5cyclictest0-21swapper/312:00:243
157899556,6cyclictest0-21swapper/310:53:043
157899553,6cyclictest41-21ksoftirqd/309:55:193
157899552,6cyclictest41-21ksoftirqd/309:30:263
134491550,13ptp4l32761-21ntp_states07:05:211
157899545,7cyclictest0-21swapper/307:20:183
157899545,6cyclictest0-21swapper/310:02:013
157899544,6cyclictest0-21swapper/309:40:193
157899543,6cyclictest41-21ksoftirqd/312:30:003
134491540,3ptp4l0-21swapper/012:18:500
134491540,3ptp4l0-21swapper/009:55:160
157899536,6cyclictest0-21swapper/312:21:543
157899536,5cyclictest0-21swapper/309:25:073
157899536,5cyclictest0-21swapper/309:25:073
157899535,7cyclictest0-21swapper/310:17:133
157899535,6cyclictest0-21swapper/310:42:093
134491530,4ptp4l0-21swapper/210:41:132
134491530,3ptp4l0-21swapper/209:10:132
134491530,3ptp4l0-21swapper/012:38:540
157899526,6cyclictest0-21swapper/310:59:263
157899526,6cyclictest0-21swapper/309:10:423
157899526,5cyclictest0-21swapper/307:55:053
157899525,6cyclictest0-21swapper/311:39:263
157899525,6cyclictest0-21swapper/307:49:393
157899524,6cyclictest0-21swapper/310:10:263
157899522,31cyclictest0-21swapper/311:09:263
134491520,4ptp4l0-21swapper/008:16:000
134491520,4ptp4l0-21swapper/007:09:450
134491520,3ptp4l0-21swapper/211:35:252
134491520,3ptp4l0-21swapper/210:10:252
134491520,3ptp4l0-21swapper/207:50:302
157899517,7cyclictest0-21swapper/309:47:073
157899516,6cyclictest0-21swapper/310:06:263
157899515,6cyclictest0-21swapper/312:08:543
157899515,6cyclictest0-21swapper/308:10:533
157899515,14cyclictest22132-21latency_hist07:55:003
157899514,6cyclictest0-21swapper/307:15:333
134491510,5ptp4l0-21swapper/208:12:132
134491510,4ptp4l0-21swapper/010:05:020
134491510,3ptp4l0-21swapper/209:28:442
134491510,3ptp4l0-21swapper/209:28:442
134491510,3ptp4l0-21swapper/208:00:212
134491510,3ptp4l0-21swapper/208:00:212
157899505,6cyclictest0-21swapper/309:18:563
157899505,11cyclictest0-21swapper/311:10:273
157899504,7cyclictest0-21swapper/308:55:223
157899504,7cyclictest0-21swapper/308:53:333
157899504,6cyclictest0-21swapper/310:37:033
157899504,6cyclictest0-21swapper/307:12:283
157899503,4cyclictest0-21swapper/310:20:113
157599503,6cyclictest9-21ksoftirqd/011:08:090
134491500,9ptp4l0-21swapper/107:20:261
134491500,4ptp4l0-21swapper/209:09:182
134491500,3ptp4l0-21swapper/012:14:580
157899497,6cyclictest0-21swapper/310:47:513
157899497,6cyclictest0-21swapper/307:30:503
157899497,5cyclictest0-21swapper/312:16:363
157899496,6cyclictest0-21swapper/310:28:143
157899496,6cyclictest0-21swapper/308:35:573
157899496,6cyclictest0-21swapper/308:26:503
157899491,7cyclictest41-21ksoftirqd/309:50:223
157599499,5cyclictest9-21ksoftirqd/008:39:550
157599495,9cyclictest9-21ksoftirqd/007:34:590
134491490,4ptp4l0-21swapper/210:48:182
134491490,4ptp4l0-21swapper/210:07:502
134491490,3ptp4l0-21swapper/210:55:482
134491490,3ptp4l0-21swapper/207:32:002
157899487,5cyclictest0-21swapper/309:38:393
157899486,6cyclictest0-21swapper/311:15:523
157899486,6cyclictest0-21swapper/308:00:513
157899486,6cyclictest0-21swapper/308:00:503
157899485,6cyclictest0-21swapper/307:38:243
157899481,8cyclictest41-21ksoftirqd/312:35:263
134491480,4ptp4l0-21swapper/212:32:332
134491480,4ptp4l0-21swapper/211:57:502
134491480,4ptp4l0-21swapper/211:33:222
134491480,4ptp4l0-21swapper/211:33:222
134491480,4ptp4l0-21swapper/012:20:060
134491480,4ptp4l0-21swapper/009:45:320
134491480,3ptp4l0-21swapper/211:14:572
134491480,11ptp4l0-21swapper/212:01:412
157899476,6cyclictest0-21swapper/312:33:303
157899476,6cyclictest0-21swapper/311:48:013
157899475,6cyclictest0-21swapper/311:22:133
157599474,6cyclictest121rcu_preempt07:47:140
134491470,4ptp4l0-21swapper/208:44:542
134491470,3ptp4l0-21swapper/210:52:082
134491470,3ptp4l0-21swapper/209:39:012
134491470,3ptp4l0-21swapper/208:22:252
157899466,6cyclictest0-21swapper/311:26:513
157899460,2cyclictest134491ptp4l09:05:133
1576994630,5cyclictest25-21ksoftirqd/109:45:291
134491460,4ptp4l0-21swapper/210:01:592
134491460,4ptp4l0-21swapper/009:51:570
157899455,5cyclictest0-21swapper/311:02:233
157899455,5cyclictest0-21swapper/311:02:233
157899453,6cyclictest41-21ksoftirqd/308:20:003
157899452,5cyclictest0-21swapper/308:30:143
157699454,4cyclictest121rcu_preempt09:42:451
157699451,4cyclictest25-21ksoftirqd/109:07:461
157599454,3cyclictest121rcu_preempt08:02:590
157599454,3cyclictest121rcu_preempt08:02:590
1575994539,4cyclictest9-21ksoftirqd/009:35:200
157599451,4cyclictest9-21ksoftirqd/010:53:280
157599450,2cyclictest121rcu_preempt11:35:020
134491450,9ptp4l0-21swapper/010:16:450
134491450,9ptp4l0-21swapper/009:21:540
134491450,4ptp4l0-21swapper/207:39:522
134491450,3ptp4l0-21swapper/210:24:382
134491450,3ptp4l0-21swapper/209:15:172
134491450,3ptp4l0-21swapper/208:05:442
134491450,2ptp4l121rcu_preempt08:05:501
157899445,6cyclictest0-21swapper/308:49:373
157899440,6cyclictest0-21swapper/308:20:273
157699441,4cyclictest25-21ksoftirqd/110:50:041
1576994412,3cyclictest25-21ksoftirqd/107:35:001
157599444,2cyclictest121rcu_preempt12:04:500
157599441,5cyclictest9-21ksoftirqd/011:20:000
157599441,4cyclictest9-21ksoftirqd/011:55:000
134491440,4ptp4l0-21swapper/012:25:120
134491440,4ptp4l0-21swapper/007:15:010
134491440,3ptp4l0-21swapper/212:21:002
134491440,3ptp4l0-21swapper/211:23:102
134491440,3ptp4l0-21swapper/208:57:502
157899431,6cyclictest0-21swapper/308:05:183
1576994338,3cyclictest25-21ksoftirqd/110:00:001
1576994337,3cyclictest25-21ksoftirqd/111:05:001
1576994337,3cyclictest25-21ksoftirqd/111:05:001
157699431,3cyclictest25-21ksoftirqd/110:21:121
157699431,3cyclictest25-21ksoftirqd/108:44:201
157699430,2cyclictest121rcu_preempt07:15:161
157599435,3cyclictest121rcu_preempt09:44:490
157599434,3cyclictest121rcu_preempt08:44:360
1575994339,2cyclictest9-21ksoftirqd/007:25:000
157599433,8cyclictest9-21ksoftirqd/012:30:160
157599433,3cyclictest121rcu_preempt10:03:260
157599433,3cyclictest121rcu_preempt08:00:000
157599431,3cyclictest121rcu_preempt11:45:260
157599430,2cyclictest121rcu_preempt12:08:200
134491430,4ptp4l0-21swapper/210:26:552
134491430,4ptp4l0-21swapper/209:41:392
134491430,4ptp4l0-21swapper/209:21:162
134491430,4ptp4l0-21swapper/011:25:330
134491430,3ptp4l9-21ksoftirqd/010:21:050
134491430,3ptp4l0-21swapper/209:45:142
157599425,3cyclictest9-21ksoftirqd/008:55:130
157599425,3cyclictest121rcu_preempt09:19:090
157599422,3cyclictest9-21ksoftirqd/009:13:130
157599421,4cyclictest9-21ksoftirqd/009:07:510
157599420,3cyclictest121rcu_preempt11:55:180
134491420,5ptp4l20709-21diskstats10:10:140
134491420,5ptp4l0-21swapper/011:30:160
134491420,5ptp4l0-21swapper/011:30:160
134491420,4ptp4l21359-21ntp_states09:00:222
134491420,4ptp4l14506-21ls11:05:222
134491420,4ptp4l0-21swapper/307:10:003
134491420,4ptp4l0-21swapper/208:29:552
134491420,4ptp4l0-21swapper/009:29:260
134491420,4ptp4l0-21swapper/009:29:260
134491420,3ptp4l15492-21apt-get07:40:120
134491420,10ptp4l0-21swapper/208:30:112
157799412,37cyclictest4288-21fschecks_count07:15:152
157699414,3cyclictest25-21ksoftirqd/111:20:001
1576994126,3cyclictest25-21ksoftirqd/110:55:241
1576994126,3cyclictest25-21ksoftirqd/108:50:151
1576994126,3cyclictest25-21ksoftirqd/108:45:231
1576994125,4cyclictest25-21ksoftirqd/108:35:181
1576994125,4cyclictest25-21ksoftirqd/107:40:281
1575994137,2cyclictest9-21ksoftirqd/010:35:010
157599413,2cyclictest121rcu_preempt11:14:470
1575994126,3cyclictest9-21ksoftirqd/008:05:250
1575994126,3cyclictest9-21ksoftirqd/007:25:220
157599411,4cyclictest9-21ksoftirqd/010:45:520
157599410,2cyclictest121rcu_preempt08:27:430
134491410,5ptp4l27783-21/usr/sbin/munin10:25:181
134491410,5ptp4l10584-21kworker/u8:208:00:151
134491410,5ptp4l10584-21kworker/u8:208:00:151
134491410,5ptp4l0-21swapper/212:05:152
134491410,5ptp4l0-21swapper/209:50:122
134491410,5ptp4l0-21swapper/207:45:152
134491410,5ptp4l0-21swapper/107:51:271
134491410,5ptp4l0-21swapper/008:46:220
134491410,4ptp4l29768-21df08:10:150
134491410,4ptp4l0-21swapper/011:23:400
134491410,4ptp4l0-21swapper/008:30:160
134491410,4ptp4l0-21swapper/008:21:350
157699404,2cyclictest121rcu_preempt12:00:111
1576994036,3cyclictest25-21ksoftirqd/110:49:591
1576994035,3cyclictest25-21ksoftirqd/108:00:011
1576994026,3cyclictest25-21ksoftirqd/109:20:231
1576994025,4cyclictest25-21ksoftirqd/112:20:231
1576994025,4cyclictest25-21ksoftirqd/108:55:131
1576994025,3cyclictest25-21ksoftirqd/111:50:151
1576994025,3cyclictest25-21ksoftirqd/111:10:251
1575994025,4cyclictest9-21ksoftirqd/010:35:230
1575994025,3cyclictest9-21ksoftirqd/010:40:250
1575994024,4cyclictest9-21ksoftirqd/009:00:170
134491400,5ptp4l0-21swapper/211:45:242
134491400,5ptp4l0-21swapper/007:50:140
134491400,4ptp4l0-21swapper/010:56:240
134491400,4ptp4l0-21swapper/010:27:220
134491400,4ptp4l0-21swapper/008:53:580
134491400,4ptp4l0-21swapper/007:19:170
134491400,3ptp4l30090-21hddtemp_smartct11:40:150
134491400,3ptp4l23006-21diskstats11:25:152
134491400,3ptp4l0-21swapper/207:44:242
134491400,3ptp4l0-21swapper/109:11:341
1576993935,2cyclictest25-21ksoftirqd/109:55:011
1576993934,3cyclictest25-21ksoftirqd/112:25:151
1576993934,3cyclictest25-21ksoftirqd/112:10:011
1576993934,3cyclictest25-21ksoftirqd/111:49:591
1576993934,3cyclictest25-21ksoftirqd/107:15:011
1576993926,3cyclictest25-21ksoftirqd/109:30:191
1576993925,3cyclictest25-21ksoftirqd/112:05:151
1576993925,3cyclictest25-21ksoftirqd/109:00:241
1576993925,3cyclictest25-21ksoftirqd/107:45:241
1576993924,4cyclictest25-21ksoftirqd/111:40:201
1576993924,3cyclictest25-21ksoftirqd/110:15:201
134491390,4ptp4l22963-21df_abs10:15:142
134491390,4ptp4l0-21swapper/212:25:002
134491390,4ptp4l0-21swapper/209:55:192
134491390,4ptp4l0-21swapper/208:45:242
134491390,4ptp4l0-21swapper/110:31:121
134491390,4ptp4l0-21swapper/108:25:371
134491390,4ptp4l0-21swapper/108:23:011
134491390,4ptp4l0-21swapper/108:19:431
134491390,3ptp4l0-21swapper/207:23:442
134491390,3ptp4l0-21swapper/109:17:581
134491390,3ptp4l0-21swapper/108:33:211
1576993832,3cyclictest25-21ksoftirqd/110:10:001
1576993824,3cyclictest25-21ksoftirqd/112:35:251
134491380,4ptp4l28533-21pluginstate11:35:231
134491380,4ptp4l2182-21taskset07:10:172
134491380,4ptp4l0-21swapper/211:40:242
134491380,3ptp4l0-21swapper/208:15:282
134491380,3ptp4l0-21swapper/207:55:112
134491380,3ptp4l0-21swapper/109:29:041
134491380,3ptp4l0-21swapper/109:29:041
1576993732,3cyclictest25-21ksoftirqd/111:30:001
1576993732,3cyclictest25-21ksoftirqd/111:25:001
157699372,3cyclictest121rcu_preempt10:00:241
1576993723,4cyclictest25-21ksoftirqd/110:10:191
1576993723,3cyclictest25-21ksoftirqd/107:35:231
1576993722,4cyclictest25-21ksoftirqd/108:10:171
134491370,3ptp4l0-21swapper/112:18:231
1576993622,4cyclictest25-21ksoftirqd/112:30:151
1576993622,3cyclictest25-21ksoftirqd/111:55:241
1576993621,4cyclictest25-21ksoftirqd/110:35:251
134491360,3ptp4l0-21swapper/110:40:261
134491360,3ptp4l0-21swapper/109:38:591
1576993522,4cyclictest25-21ksoftirqd/111:05:141
4862243,12sleep2621-21ls07:05:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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