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2026-04-17 - 15:26
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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 rackdslot2.osadl.org (updated Fri Apr 17, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7622208175,22sleep10-21swapper/107:07:061
7952206172,23sleep20-21swapper/207:07:302
139591206172,22phc2sys0-21swapper/307:06:033
6432204170,23sleep00-21swapper/007:05:350
1395918363,11phc2sys0-21swapper/307:10:013
1288996831,10cyclictest25-21ksoftirqd/109:35:001
19982630,3sleep10-21swapper/107:10:181
1288995920,4cyclictest25-21ksoftirqd/111:20:131
1288995422,4cyclictest25-21ksoftirqd/110:40:151
171692530,2sleep217170-21ptp4l07:40:232
1288995321,4cyclictest25-21ksoftirqd/111:55:221
1287995320,3cyclictest9-21ksoftirqd/010:20:010
207112520,2sleep00-21swapper/011:10:220
1288995217,7cyclictest25-21ksoftirqd/112:25:201
1288995211,7cyclictest25-21ksoftirqd/107:31:271
1288995118,7cyclictest25-21ksoftirqd/111:10:261
1287995121,2cyclictest121rcu_preempt09:29:090
50302500,1sleep30-21swapper/309:30:243
297822500,1sleep20-21swapper/209:15:192
297822500,1sleep20-21swapper/209:15:192
1288995017,10cyclictest25-21ksoftirqd/108:30:211
1288995014,3cyclictest25-21ksoftirqd/110:35:351
1288995013,7cyclictest25-21ksoftirqd/111:05:011
1288995010,9cyclictest25-21ksoftirqd/108:55:281
1288995010,7cyclictest25-21ksoftirqd/108:24:191
1287995018,3cyclictest9-21ksoftirqd/008:50:100
128899497,7cyclictest25-21ksoftirqd/110:24:331
1288994913,7cyclictest25-21ksoftirqd/112:05:001
128899489,8cyclictest25-21ksoftirqd/110:46:021
128899488,6cyclictest25-21ksoftirqd/110:15:331
128899487,6cyclictest25-21ksoftirqd/107:35:201
128899484,2cyclictest20299-21grep10:05:001
1288994811,4cyclictest25-21ksoftirqd/110:59:191
1287994816,4cyclictest9-21ksoftirqd/009:55:000
128899476,6cyclictest25-21ksoftirqd/111:45:181
128899474,2cyclictest25-21ksoftirqd/112:30:201
128899474,2cyclictest25-21ksoftirqd/109:15:161
128899474,2cyclictest25-21ksoftirqd/109:15:161
128899474,2cyclictest25-21ksoftirqd/109:05:251
128899474,2cyclictest25-21ksoftirqd/108:45:181
128899473,7cyclictest25-21ksoftirqd/109:40:231
1288994730,3cyclictest25-21ksoftirqd/112:14:331
1288994730,3cyclictest25-21ksoftirqd/112:14:331
1288994721,3cyclictest121rcu_preempt11:50:211
128899471,7cyclictest25-21ksoftirqd/108:40:001
128899471,7cyclictest25-21ksoftirqd/108:40:001
1288994714,10cyclictest25-21ksoftirqd/111:05:121
1288994712,5cyclictest25-21ksoftirqd/107:40:051
128799478,4cyclictest9-21ksoftirqd/007:55:000
1287994718,4cyclictest9-21ksoftirqd/007:10:130
259512460,2sleep00-21swapper/008:00:150
128899469,6cyclictest25-21ksoftirqd/108:50:371
128899468,7cyclictest25-21ksoftirqd/108:11:331
128899465,6cyclictest25-21ksoftirqd/109:00:191
128899465,5cyclictest25-21ksoftirqd/109:10:131
128899464,2cyclictest25-21ksoftirqd/112:15:191
128899464,2cyclictest25-21ksoftirqd/110:50:191
128899464,2cyclictest25-21ksoftirqd/108:40:191
128899463,7cyclictest21326-21sed12:20:181
128899463,2cyclictest25-21ksoftirqd/111:40:221
128899462,3cyclictest25-21ksoftirqd/112:05:221
1288994611,7cyclictest25-21ksoftirqd/107:19:041
1288994610,7cyclictest25-21ksoftirqd/108:16:231
128799462,2cyclictest121rcu_preempt12:25:000
1287994616,4cyclictest9-21ksoftirqd/012:15:200
1287994615,3cyclictest9-21ksoftirqd/010:10:180
1287994612,4cyclictest9-21ksoftirqd/008:24:590
128899458,3cyclictest25-21ksoftirqd/111:19:081
128899455,6cyclictest25-21ksoftirqd/111:35:151
128899455,6cyclictest25-21ksoftirqd/111:35:151
128899454,4cyclictest25-21ksoftirqd/107:25:231
128899453,3cyclictest25-21ksoftirqd/108:05:251
128899452,3cyclictest25-21ksoftirqd/109:25:191
1288994514,8cyclictest25-21ksoftirqd/107:56:571
128899451,3cyclictest25-21ksoftirqd/109:20:171
1287994516,3cyclictest9-21ksoftirqd/011:25:230
128799451,3cyclictest121rcu_preempt07:20:000
1287994511,4cyclictest9-21ksoftirqd/011:00:220
128899449,9cyclictest25-21ksoftirqd/107:20:101
128899440,8cyclictest25-21ksoftirqd/112:35:281
1287994415,6cyclictest9-21ksoftirqd/008:15:010
1287994413,4cyclictest9-21ksoftirqd/009:00:260
128899432,5cyclictest25-21ksoftirqd/109:35:191
128899430,2cyclictest121rcu_preempt10:05:161
128799439,4cyclictest9-21ksoftirqd/012:00:220
1287994329,4cyclictest9-21ksoftirqd/007:44:590
41298420,2rtkit-daemon411-21rtkit-daemon10:37:022
139291420,0ptp4l401ktimersoftd/311:17:203
139291420,0ptp4l401ktimersoftd/308:57:483
128899424,2cyclictest25-21ksoftirqd/109:48:061
1288994235,3cyclictest25-21ksoftirqd/110:35:001
1288994235,3cyclictest25-21ksoftirqd/110:35:001
128899423,2cyclictest26812-21phc2sys08:00:221
128899422,2cyclictest121rcu_preempt07:50:261
1288994214,4cyclictest25-21ksoftirqd/107:45:361
128899420,8cyclictest25-21ksoftirqd/108:25:201
128899420,2cyclictest121rcu_preempt11:25:271
1287994229,3cyclictest9-21ksoftirqd/012:35:280
1287994214,4cyclictest9-21ksoftirqd/010:50:190
128799421,2cyclictest121rcu_preempt09:05:190
1289994130,10cyclictest33-21ksoftirqd/207:50:232
1289994129,9cyclictest33-21ksoftirqd/208:05:152
1288994127,3cyclictest25-21ksoftirqd/109:55:171
1288994127,3cyclictest25-21ksoftirqd/109:55:171
128799413,2cyclictest121rcu_preempt09:20:140
128799412,2cyclictest121rcu_preempt10:25:130
1287994115,8cyclictest9-21ksoftirqd/011:30:170
128799411,2cyclictest121rcu_preempt11:55:250
1287994110,4cyclictest9-21ksoftirqd/007:20:200
139291400,0ptp4l401ktimersoftd/309:00:193
1289994035,3cyclictest33-21ksoftirqd/209:35:002
1289994014,14cyclictest33-21ksoftirqd/212:25:252
1288994036,2cyclictest25-21ksoftirqd/109:55:001
1288994035,3cyclictest25-21ksoftirqd/111:30:161
1288994030,3cyclictest25-21ksoftirqd/110:25:131
128799409,4cyclictest9-21ksoftirqd/012:05:150
128799407,5cyclictest9-21ksoftirqd/011:40:260
1287994027,3cyclictest9-21ksoftirqd/011:55:000
1287994010,4cyclictest9-21ksoftirqd/010:05:220
1287994010,4cyclictest9-21ksoftirqd/008:40:260
139291390,0ptp4l401ktimersoftd/307:20:243
129099397,18cyclictest1308-21runrttasks08:26:163
1289993935,3cyclictest33-21ksoftirqd/211:00:002
1289993934,3cyclictest33-21ksoftirqd/209:20:182
1289993934,3cyclictest33-21ksoftirqd/208:20:002
128899394,2cyclictest25-21ksoftirqd/110:10:201
128799396,6cyclictest9-21ksoftirqd/011:20:130
128799396,2cyclictest121rcu_preempt08:15:130
1287993934,3cyclictest9-21ksoftirqd/010:25:000
1287993934,2cyclictest9-21ksoftirqd/007:40:000
1290993833,3cyclictest41-21ksoftirqd/310:16:203
1290993832,4cyclictest41-21ksoftirqd/311:33:003
1290993832,4cyclictest41-21ksoftirqd/309:46:413
1290993832,4cyclictest41-21ksoftirqd/308:42:023
1289993834,2cyclictest33-21ksoftirqd/208:55:192
1289993833,3cyclictest33-21ksoftirqd/207:45:002
1289993827,9cyclictest33-21ksoftirqd/212:05:192
1289993827,9cyclictest33-21ksoftirqd/207:55:162
1287993834,2cyclictest9-21ksoftirqd/009:30:250
1287993833,3cyclictest9-21ksoftirqd/009:10:180
1287993833,3cyclictest9-21ksoftirqd/007:45:000
1287993827,3cyclictest9-21ksoftirqd/008:45:150
1287993823,4cyclictest9-21ksoftirqd/012:25:170
1287993817,7cyclictest9-21ksoftirqd/011:00:000
128799381,2cyclictest121rcu_preempt07:59:150
128799380,2cyclictest121rcu_preempt10:35:250
1290993731,4cyclictest41-21ksoftirqd/310:35:273
1290993731,4cyclictest41-21ksoftirqd/310:03:543
1290993731,4cyclictest41-21ksoftirqd/309:12:153
1290993731,4cyclictest41-21ksoftirqd/307:29:173
1289993731,4cyclictest33-21ksoftirqd/211:44:102
1289993731,4cyclictest33-21ksoftirqd/211:12:212
1289993731,4cyclictest33-21ksoftirqd/208:04:072
128999370,2cyclictest121rcu_preempt10:05:192
128799377,4cyclictest9-21ksoftirqd/011:05:160
1287993732,3cyclictest9-21ksoftirqd/011:35:190
1287993732,3cyclictest9-21ksoftirqd/011:35:190
1287993732,2cyclictest9-21ksoftirqd/007:25:210
1287993731,3cyclictest9-21ksoftirqd/009:15:270
1287993731,3cyclictest9-21ksoftirqd/009:15:270
1287993730,3cyclictest9-21ksoftirqd/011:15:240
1287993727,2cyclictest9-21ksoftirqd/009:45:160
1287993715,3cyclictest9-21ksoftirqd/011:45:130
1290993631,3cyclictest41-21ksoftirqd/310:30:503
1290993631,3cyclictest41-21ksoftirqd/310:30:503
1290993631,3cyclictest41-21ksoftirqd/308:20:123
1290993630,4cyclictest41-21ksoftirqd/312:36:063
1290993630,4cyclictest41-21ksoftirqd/311:49:003
1290993630,4cyclictest41-21ksoftirqd/311:02:473
1290993630,4cyclictest41-21ksoftirqd/308:16:433
1289993632,3cyclictest33-21ksoftirqd/207:25:202
1289993631,3cyclictest33-21ksoftirqd/208:15:002
1289993630,4cyclictest33-21ksoftirqd/210:54:232
1289993630,4cyclictest33-21ksoftirqd/207:19:332
1287993631,3cyclictest9-21ksoftirqd/012:30:120
1287993631,3cyclictest9-21ksoftirqd/008:05:140
1287993630,4cyclictest9-21ksoftirqd/010:00:020
1287993630,3cyclictest9-21ksoftirqd/012:15:010
1287993630,3cyclictest9-21ksoftirqd/012:15:010
1287993630,3cyclictest9-21ksoftirqd/007:30:220
1287993624,3cyclictest9-21ksoftirqd/008:25:190
1290993530,3cyclictest41-21ksoftirqd/309:50:123
1290993530,3cyclictest41-21ksoftirqd/308:49:353
1290993529,4cyclictest41-21ksoftirqd/311:10:493
1290993529,4cyclictest41-21ksoftirqd/310:56:573
1290993529,4cyclictest41-21ksoftirqd/310:28:583
1289993531,3cyclictest33-21ksoftirqd/208:50:002
1289993530,3cyclictest33-21ksoftirqd/212:25:002
1289993530,3cyclictest33-21ksoftirqd/211:30:182
1289993530,3cyclictest33-21ksoftirqd/211:26:012
1289993530,3cyclictest33-21ksoftirqd/208:22:222
1289993530,3cyclictest33-21ksoftirqd/207:35:002
1289993529,4cyclictest33-21ksoftirqd/212:18:282
1289993529,4cyclictest33-21ksoftirqd/211:49:192
1289993529,3cyclictest33-21ksoftirqd/209:40:002
1289993523,10cyclictest33-21ksoftirqd/208:30:252
128999351,2cyclictest121rcu_preempt10:00:122
1289993510,16cyclictest33-21ksoftirqd/211:05:142
1287993531,2cyclictest9-21ksoftirqd/008:35:150
1287993531,2cyclictest9-21ksoftirqd/008:35:140
1287993530,3cyclictest9-21ksoftirqd/010:40:220
1287993530,3cyclictest9-21ksoftirqd/009:55:210
1287993530,3cyclictest9-21ksoftirqd/009:55:210
1287993530,3cyclictest9-21ksoftirqd/009:35:220
1287993529,4cyclictest9-21ksoftirqd/010:33:030
1287993529,4cyclictest9-21ksoftirqd/010:33:030
1287993529,4cyclictest9-21ksoftirqd/008:59:520
1287993522,3cyclictest9-21ksoftirqd/010:45:200
1290993429,3cyclictest41-21ksoftirqd/308:50:513
1290993428,4cyclictest41-21ksoftirqd/312:33:373
1290993428,4cyclictest41-21ksoftirqd/311:53:423
1290993428,4cyclictest41-21ksoftirqd/311:42:063
1290993428,4cyclictest41-21ksoftirqd/310:12:523
1290993428,4cyclictest41-21ksoftirqd/310:09:073
1290993428,4cyclictest41-21ksoftirqd/309:44:163
1290993428,4cyclictest41-21ksoftirqd/309:39:473
1290993428,3cyclictest41-21ksoftirqd/310:51:153
1289993429,3cyclictest33-21ksoftirqd/212:10:122
1289993429,3cyclictest33-21ksoftirqd/212:10:122
1289993429,3cyclictest33-21ksoftirqd/207:20:122
1289993428,4cyclictest33-21ksoftirqd/212:38:542
1289993428,4cyclictest33-21ksoftirqd/211:58:582
1289993428,4cyclictest33-21ksoftirqd/210:42:562
1289993428,4cyclictest33-21ksoftirqd/208:36:042
1289993428,4cyclictest33-21ksoftirqd/208:36:032
1289993427,4cyclictest33-21ksoftirqd/209:04:192
1289993424,9cyclictest33-21ksoftirqd/207:35:182
1289993423,9cyclictest33-21ksoftirqd/212:00:252
1287993428,3cyclictest9-21ksoftirqd/009:40:190
1290993328,3cyclictest41-21ksoftirqd/312:21:213
1290993328,3cyclictest41-21ksoftirqd/311:25:303
1290993328,3cyclictest41-21ksoftirqd/309:56:323
1290993328,3cyclictest41-21ksoftirqd/309:56:313
1290993320,11cyclictest41-21ksoftirqd/311:08:583
1289993329,2cyclictest33-21ksoftirqd/209:30:002
1289993328,3cyclictest33-21ksoftirqd/208:40:182
1289993327,4cyclictest33-21ksoftirqd/211:37:562
1289993327,4cyclictest33-21ksoftirqd/211:37:562
1289993327,4cyclictest33-21ksoftirqd/211:02:182
1289993327,4cyclictest33-21ksoftirqd/208:52:482
1289993322,9cyclictest33-21ksoftirqd/211:50:152
128799334,3cyclictest9-21ksoftirqd/008:30:110
1290993227,3cyclictest41-21ksoftirqd/312:11:213
1290993227,3cyclictest41-21ksoftirqd/312:11:213
1290993227,3cyclictest41-21ksoftirqd/312:00:093
1290993227,3cyclictest41-21ksoftirqd/310:44:013
1290993227,3cyclictest41-21ksoftirqd/308:38:173
1290993227,3cyclictest41-21ksoftirqd/308:38:173
1290993227,3cyclictest41-21ksoftirqd/307:31:583
1290993226,4cyclictest41-21ksoftirqd/312:26:393
1290993226,4cyclictest41-21ksoftirqd/312:05:573
1290993226,4cyclictest41-21ksoftirqd/309:26:433
1290993226,4cyclictest41-21ksoftirqd/309:23:073
1289993227,3cyclictest33-21ksoftirqd/209:05:152
1289993226,3cyclictest33-21ksoftirqd/211:20:002
139291310,13ptp4l129099cyclictest08:32:223
1290993125,4cyclictest41-21ksoftirqd/312:19:213
1289993127,3cyclictest33-21ksoftirqd/210:45:172
1289993126,3cyclictest33-21ksoftirqd/212:30:142
1289993120,9cyclictest33-21ksoftirqd/211:20:262
1289993120,9cyclictest33-21ksoftirqd/208:25:252
128999311,3cyclictest121rcu_preempt09:10:432
129099309,19cyclictest25677-21grep11:20:243
1290993026,3cyclictest41-21ksoftirqd/311:56:213
1290993025,3cyclictest41-21ksoftirqd/310:21:363
1290993025,3cyclictest41-21ksoftirqd/309:15:113
1290993025,3cyclictest41-21ksoftirqd/309:15:113
1290993025,3cyclictest41-21ksoftirqd/307:50:123
1290993013,15cyclictest15846-21/usr/sbin/munin07:40:213
1289993024,4cyclictest33-21ksoftirqd/209:51:052
129099295,21cyclictest19765-21sed07:45:223
1290992924,4cyclictest41-21ksoftirqd/308:05:233
1290992924,3cyclictest41-21ksoftirqd/308:14:113
1290992912,15cyclictest23160-21/usr/sbin/munin07:55:123
1289992924,3cyclictest33-21ksoftirqd/207:12:352
1289992923,4cyclictest33-21ksoftirqd/209:41:512
129099280,3cyclictest25166-21sed09:05:213
129099280,3cyclictest217-21systemd-journal11:38:013
129099280,3cyclictest217-21systemd-journal11:38:013
129099278,17cyclictest13458-21/usr/sbin/munin07:35:183
1290992722,3cyclictest41-21ksoftirqd/307:15:043
1290992711,14cyclictest26769-21awk08:00:213
129099265,18cyclictest8369-21kernelversion10:45:173
1289992622,2cyclictest33-21ksoftirqd/210:10:122
1289992519,3cyclictest33-21ksoftirqd/210:35:002
1289992519,3cyclictest33-21ksoftirqd/210:35:002
128999251,2cyclictest0-21swapper/209:56:202
128999251,2cyclictest0-21swapper/209:56:202
1289992313,9cyclictest33-21ksoftirqd/209:45:232
128999231,2cyclictest121rcu_preempt10:20:142
1289992116,3cyclictest33-21ksoftirqd/210:15:222
128999193,8cyclictest22673-21kworker/2:110:25:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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