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2026-04-08 - 18:56
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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 376 highest latencies:
System rackdslot3.osadl.org (updated Wed Apr 08, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179412227163,21sleep10-21swapper/107:09:571
139491207173,22phc2sys0-21swapper/307:07:493
177662204171,22sleep20-21swapper/207:07:422
177692201168,22sleep00-21swapper/007:07:440
1040721730,7sleep11823799cyclictest11:20:291
576221180,5sleep31823999cyclictest10:05:173
18236996426,4cyclictest9-21ksoftirqd/011:20:000
95992620,5sleep21823899cyclictest08:00:002
160702620,3sleep316073-21proc_pri10:25:233
18236996028,4cyclictest9-21ksoftirqd/008:30:260
139391600,1ptp4l401ktimersoftd/308:10:023
18236995928,4cyclictest9-21ksoftirqd/007:55:150
18238995825,5cyclictest33-21ksoftirqd/210:15:012
18238995620,12cyclictest33-21ksoftirqd/207:29:592
18236995528,6cyclictest9-21ksoftirqd/010:02:360
18236995526,4cyclictest9-21ksoftirqd/009:40:240
18236995526,3cyclictest9-21ksoftirqd/010:15:130
18236995523,4cyclictest9-21ksoftirqd/010:25:150
18238995424,9cyclictest33-21ksoftirqd/211:05:182
18238995424,9cyclictest33-21ksoftirqd/211:05:182
18238995421,5cyclictest33-21ksoftirqd/208:25:132
18236995426,7cyclictest9-21ksoftirqd/011:28:290
245522530,3sleep2321ktimersoftd/208:30:122
18238995328,16cyclictest33-21ksoftirqd/208:05:192
18238995321,4cyclictest33-21ksoftirqd/211:00:202
248732520,3sleep20-21swapper/209:35:272
18238995215,9cyclictest33-21ksoftirqd/209:25:182
18236995225,4cyclictest9-21ksoftirqd/007:25:260
18236995220,4cyclictest9-21ksoftirqd/010:55:170
139391520,10ptp4l401ktimersoftd/307:14:293
18238995124,5cyclictest33-21ksoftirqd/209:20:182
18238995116,4cyclictest33-21ksoftirqd/212:35:152
18238995116,4cyclictest33-21ksoftirqd/212:35:152
18238995116,10cyclictest33-21ksoftirqd/209:50:162
18237995120,9cyclictest25-21ksoftirqd/107:26:371
1823699514,2cyclictest121rcu_preempt09:20:010
18236995125,6cyclictest9-21ksoftirqd/009:11:180
18236995123,8cyclictest9-21ksoftirqd/008:05:240
18236995121,5cyclictest9-21ksoftirqd/011:55:020
18236995119,3cyclictest9-21ksoftirqd/010:50:210
18236995118,6cyclictest9-21ksoftirqd/011:10:000
18236995118,6cyclictest9-21ksoftirqd/011:10:000
18238995023,9cyclictest33-21ksoftirqd/208:58:002
18238995023,6cyclictest33-21ksoftirqd/210:05:222
1823799503,5cyclictest241ktimersoftd/110:35:011
1823799503,5cyclictest241ktimersoftd/110:25:001
18237995010,6cyclictest25-21ksoftirqd/111:16:381
1823799500,6cyclictest241ktimersoftd/112:05:001
18236995026,8cyclictest9-21ksoftirqd/010:12:560
18236995025,6cyclictest9-21ksoftirqd/009:25:130
18236995019,7cyclictest9-21ksoftirqd/007:25:010
18236995018,6cyclictest9-21ksoftirqd/007:20:010
18236995017,6cyclictest9-21ksoftirqd/011:55:220
18238994927,9cyclictest33-21ksoftirqd/208:40:192
18238994911,5cyclictest33-21ksoftirqd/211:12:202
18238994910,2cyclictest121rcu_preempt10:55:242
1823799492,6cyclictest241ktimersoftd/112:35:231
1823799492,6cyclictest241ktimersoftd/112:35:231
1823799490,7cyclictest241ktimersoftd/111:40:001
1823799490,7cyclictest241ktimersoftd/111:40:001
18236994931,8cyclictest9-21ksoftirqd/012:40:000
18236994931,8cyclictest9-21ksoftirqd/012:40:000
18236994923,6cyclictest9-21ksoftirqd/008:10:290
18236994921,7cyclictest9-21ksoftirqd/010:35:260
18236994921,7cyclictest9-21ksoftirqd/010:35:260
18236994919,6cyclictest9-21ksoftirqd/009:05:190
18236994918,8cyclictest9-21ksoftirqd/007:50:000
18238994821,5cyclictest33-21ksoftirqd/212:15:132
18238994812,5cyclictest33-21ksoftirqd/208:24:522
18238994811,5cyclictest33-21ksoftirqd/209:14:032
1823799484,8cyclictest25-21ksoftirqd/109:55:021
1823799480,6cyclictest241ktimersoftd/107:30:221
18236994830,5cyclictest9-21ksoftirqd/012:00:110
18236994819,4cyclictest9-21ksoftirqd/009:35:140
18236994819,3cyclictest9-21ksoftirqd/012:20:180
1823699481,3cyclictest121rcu_preempt10:40:110
1823899479,4cyclictest33-21ksoftirqd/209:48:482
18238994727,11cyclictest33-21ksoftirqd/212:05:132
18238994718,8cyclictest33-21ksoftirqd/210:50:022
18238994717,4cyclictest33-21ksoftirqd/210:35:222
18238994717,4cyclictest33-21ksoftirqd/210:35:222
18238994710,4cyclictest33-21ksoftirqd/207:36:142
1823799475,7cyclictest25-21ksoftirqd/109:55:241
1823799473,4cyclictest25-21ksoftirqd/109:45:161
1823799473,3cyclictest25-21ksoftirqd/109:40:161
1823799471,5cyclictest0-21swapper/107:50:191
1823799470,6cyclictest241ktimersoftd/112:15:221
18236994723,4cyclictest9-21ksoftirqd/012:12:170
18236994721,3cyclictest9-21ksoftirqd/011:35:130
18236994721,3cyclictest9-21ksoftirqd/011:35:130
144432470,3sleep214448-21missed_timers11:30:202
1823899469,5cyclictest33-21ksoftirqd/208:17:212
1823899468,5cyclictest33-21ksoftirqd/209:00:342
18238994617,4cyclictest33-21ksoftirqd/212:30:252
18238994616,6cyclictest33-21ksoftirqd/210:40:232
18238994612,8cyclictest33-21ksoftirqd/209:30:132
18238994612,4cyclictest33-21ksoftirqd/212:03:432
18238994611,5cyclictest33-21ksoftirqd/212:11:332
1823799465,7cyclictest25-21ksoftirqd/112:25:161
1823799463,7cyclictest241ktimersoftd/107:15:221
1823799462,6cyclictest241ktimersoftd/112:25:001
18237994617,6cyclictest25-21ksoftirqd/112:05:081
1823799460,7cyclictest241ktimersoftd/107:45:131
1823799460,5cyclictest25-21ksoftirqd/108:20:231
1823799460,5cyclictest241ktimersoftd/108:40:001
1823799460,5cyclictest241ktimersoftd/108:40:001
18236994628,8cyclictest9-21ksoftirqd/010:05:140
18236994622,4cyclictest9-21ksoftirqd/008:48:190
18236994619,9cyclictest9-21ksoftirqd/009:20:170
18236994617,6cyclictest9-21ksoftirqd/007:10:240
18236994615,6cyclictest9-21ksoftirqd/009:00:140
18236994611,7cyclictest9-21ksoftirqd/008:50:250
1823699460,3cyclictest9-21ksoftirqd/008:40:170
18238994526,9cyclictest33-21ksoftirqd/207:30:102
18238994519,9cyclictest33-21ksoftirqd/207:10:182
18238994511,4cyclictest33-21ksoftirqd/211:24:282
18238994510,4cyclictest33-21ksoftirqd/211:15:372
18238994510,4cyclictest33-21ksoftirqd/210:52:352
1823799454,6cyclictest25-21ksoftirqd/108:10:241
1823799453,6cyclictest25-21ksoftirqd/111:25:131
1823799452,5cyclictest25-21ksoftirqd/110:25:161
1823799452,5cyclictest241ktimersoftd/109:05:201
1823799451,6cyclictest241ktimersoftd/110:00:121
18237994516,3cyclictest25-21ksoftirqd/111:14:301
1823799451,5cyclictest25-21ksoftirqd/108:45:141
1823799451,5cyclictest25-21ksoftirqd/107:35:141
1823799450,6cyclictest241ktimersoftd/112:30:231
1823799450,5cyclictest241ktimersoftd/109:00:231
1823699454,7cyclictest121rcu_preempt10:20:180
18236994532,3cyclictest9-21ksoftirqd/010:35:000
1823699452,3cyclictest121rcu_preempt11:10:180
18236994519,4cyclictest9-21ksoftirqd/008:25:230
1823699451,3cyclictest121rcu_preempt08:25:000
1823699450,5cyclictest9-21ksoftirqd/011:43:330
1823699450,2cyclictest121rcu_preempt07:50:180
1823899449,5cyclictest33-21ksoftirqd/211:50:082
1823899449,5cyclictest33-21ksoftirqd/207:21:542
1823899449,4cyclictest33-21ksoftirqd/210:29:362
1823899449,4cyclictest33-21ksoftirqd/208:50:072
1823899448,6cyclictest33-21ksoftirqd/211:35:212
1823899448,6cyclictest33-21ksoftirqd/211:35:212
18238994414,4cyclictest33-21ksoftirqd/209:05:252
18238994414,4cyclictest33-21ksoftirqd/208:35:142
18238994414,4cyclictest33-21ksoftirqd/208:35:142
18238994411,9cyclictest33-21ksoftirqd/210:30:182
18238994411,5cyclictest33-21ksoftirqd/210:01:522
18238994410,6cyclictest33-21ksoftirqd/211:49:322
1823799445,11cyclictest25-21ksoftirqd/109:25:131
1823799444,10cyclictest25-21ksoftirqd/110:40:111
1823799443,5cyclictest25-21ksoftirqd/110:40:001
1823799443,5cyclictest25-21ksoftirqd/110:40:001
18237994426,7cyclictest25-21ksoftirqd/107:10:171
18237994419,6cyclictest25-21ksoftirqd/107:20:221
1823799441,6cyclictest25-21ksoftirqd/108:40:151
1823799441,5cyclictest25-21ksoftirqd/110:55:221
1823799441,5cyclictest0-21swapper/111:05:211
1823799441,5cyclictest0-21swapper/111:05:211
1823699446,10cyclictest9-21ksoftirqd/009:50:270
1823699445,7cyclictest9-21ksoftirqd/008:35:250
1823699445,7cyclictest9-21ksoftirqd/008:35:250
1823699441,3cyclictest121rcu_preempt09:55:140
1823699440,3cyclictest121rcu_preempt10:45:180
1823899437,4cyclictest33-21ksoftirqd/211:42:132
18238994324,5cyclictest33-21ksoftirqd/207:50:232
18238994323,8cyclictest33-21ksoftirqd/207:15:232
18238994322,12cyclictest33-21ksoftirqd/209:15:142
18238994317,9cyclictest33-21ksoftirqd/208:00:262
18238994313,8cyclictest33-21ksoftirqd/210:20:262
18238994312,11cyclictest33-21ksoftirqd/208:47:222
18238994312,10cyclictest33-21ksoftirqd/207:40:432
18238994310,4cyclictest33-21ksoftirqd/212:28:182
1823799436,8cyclictest25-21ksoftirqd/111:50:131
1823799435,7cyclictest25-21ksoftirqd/110:05:251
1823799435,6cyclictest25-21ksoftirqd/110:45:141
1823799434,9cyclictest25-21ksoftirqd/108:55:151
1823799434,7cyclictest25-21ksoftirqd/110:15:161
1823799433,5cyclictest0-21swapper/111:55:221
1823799431,7cyclictest241ktimersoftd/111:30:231
1823799430,6cyclictest241ktimersoftd/108:00:121
1823799430,5cyclictest241ktimersoftd/108:15:141
1823699434,3cyclictest121rcu_preempt07:40:180
1823699434,2cyclictest9-21ksoftirqd/008:15:230
18236994320,4cyclictest9-21ksoftirqd/012:05:130
18236994315,7cyclictest9-21ksoftirqd/011:20:220
1823699430,3cyclictest121rcu_preempt08:00:130
1823699430,2cyclictest121rcu_preempt11:00:150
139391430,0ptp4l401ktimersoftd/312:10:583
139391430,0ptp4l401ktimersoftd/308:27:423
18238994210,7cyclictest33-21ksoftirqd/209:40:122
1823799424,9cyclictest25-21ksoftirqd/109:35:161
1823799423,5cyclictest25-21ksoftirqd/108:30:011
1823799420,5cyclictest241ktimersoftd/107:55:111
1823699420,3cyclictest121rcu_preempt07:35:230
18238994122,6cyclictest33-21ksoftirqd/211:25:272
18238994113,12cyclictest33-21ksoftirqd/211:55:362
18238994110,11cyclictest33-21ksoftirqd/212:20:082
1823799415,9cyclictest25-21ksoftirqd/108:35:011
1823799412,6cyclictest25-21ksoftirqd/107:40:191
1823799410,5cyclictest25-21ksoftirqd/112:11:531
18236994135,3cyclictest9-21ksoftirqd/009:30:180
18236994114,6cyclictest9-21ksoftirqd/008:55:250
18236994114,3cyclictest9-21ksoftirqd/011:30:200
1823699410,2cyclictest121rcu_preempt12:25:230
139391410,1ptp4l401ktimersoftd/309:31:153
1823899409,4cyclictest33-21ksoftirqd/208:10:042
18238994022,9cyclictest33-21ksoftirqd/209:55:252
18238994021,9cyclictest33-21ksoftirqd/210:20:022
1823799406,5cyclictest25-21ksoftirqd/111:45:161
1823799405,9cyclictest25-21ksoftirqd/109:15:151
1823799404,8cyclictest25-21ksoftirqd/109:33:081
1823799403,7cyclictest25-21ksoftirqd/110:50:201
18237994011,6cyclictest25-21ksoftirqd/110:10:131
18237994010,6cyclictest25-21ksoftirqd/109:12:051
1823799400,7cyclictest241ktimersoftd/108:05:121
18236994034,3cyclictest9-21ksoftirqd/009:45:200
18236994029,4cyclictest9-21ksoftirqd/007:30:120
18236994026,4cyclictest9-21ksoftirqd/012:15:210
1823699401,2cyclictest121rcu_preempt11:45:170
18239993934,3cyclictest41-21ksoftirqd/311:20:013
18237993935,2cyclictest241ktimersoftd/111:00:251
1823799392,6cyclictest25-21ksoftirqd/111:40:221
139391390,1ptp4l401ktimersoftd/310:56:353
18239993833,3cyclictest41-21ksoftirqd/312:30:003
18238993820,8cyclictest33-21ksoftirqd/207:45:172
1823799381,5cyclictest0-21swapper/109:20:221
18236993831,3cyclictest9-21ksoftirqd/012:30:110
18239993733,3cyclictest41-21ksoftirqd/307:30:003
18239993631,3cyclictest4733-21turbostat07:50:013
18239993630,4cyclictest41-21ksoftirqd/311:37:553
18239993630,4cyclictest41-21ksoftirqd/311:37:553
18239993630,4cyclictest41-21ksoftirqd/311:02:533
18239993630,3cyclictest41-21ksoftirqd/311:25:183
1823799362,7cyclictest25-21ksoftirqd/108:50:141
139391360,0ptp4l401ktimersoftd/310:48:373
18239993530,3cyclictest41-21ksoftirqd/311:13:273
18239993529,4cyclictest41-21ksoftirqd/312:21:583
18239993529,4cyclictest41-21ksoftirqd/308:34:143
18239993529,4cyclictest41-21ksoftirqd/307:42:283
18239993529,3cyclictest41-21ksoftirqd/312:40:003
18239993529,3cyclictest41-21ksoftirqd/312:40:003
18239993429,3cyclictest41-21ksoftirqd/308:37:313
18239993429,3cyclictest41-21ksoftirqd/308:37:313
18239993428,4cyclictest41-21ksoftirqd/311:32:463
18239993428,4cyclictest41-21ksoftirqd/311:23:283
18239993428,4cyclictest41-21ksoftirqd/310:04:003
18239993428,4cyclictest41-21ksoftirqd/308:02:133
18239993428,4cyclictest41-21ksoftirqd/307:56:353
18239993428,4cyclictest41-21ksoftirqd/307:17:043
1823999341,2cyclictest121rcu_preempt12:30:253
18239993328,3cyclictest41-21ksoftirqd/312:17:513
18239993328,3cyclictest41-21ksoftirqd/312:02:023
18239993328,3cyclictest41-21ksoftirqd/308:48:183
18239993327,4cyclictest41-21ksoftirqd/311:42:453
18239993327,4cyclictest41-21ksoftirqd/309:59:113
18239993327,4cyclictest41-21ksoftirqd/309:54:223
18239993327,4cyclictest41-21ksoftirqd/309:37:373
18239993327,4cyclictest41-21ksoftirqd/308:23:443
18239993327,4cyclictest41-21ksoftirqd/307:52:463
18239993327,3cyclictest41-21ksoftirqd/310:50:093
18239993227,3cyclictest41-21ksoftirqd/311:55:013
18239993227,3cyclictest41-21ksoftirqd/311:05:193
18239993227,3cyclictest41-21ksoftirqd/311:05:183
18239993227,3cyclictest41-21ksoftirqd/310:16:003
18239993227,3cyclictest41-21ksoftirqd/310:10:173
18239993227,3cyclictest41-21ksoftirqd/309:07:373
18239993227,3cyclictest41-21ksoftirqd/308:19:283
18239993226,4cyclictest41-21ksoftirqd/310:33:423
18239993226,4cyclictest41-21ksoftirqd/309:40:513
18239993226,4cyclictest41-21ksoftirqd/309:11:413
18239993226,4cyclictest41-21ksoftirqd/308:55:463
139391320,0ptp4l401ktimersoftd/309:17:553
18239993026,2cyclictest41-21ksoftirqd/310:35:193
18239993026,2cyclictest41-21ksoftirqd/310:35:193
18239993025,3cyclictest41-21ksoftirqd/312:08:013
18239993025,3cyclictest41-21ksoftirqd/309:26:513
18239993024,4cyclictest41-21ksoftirqd/309:48:013
18239993024,4cyclictest41-21ksoftirqd/308:53:013
18239993024,4cyclictest41-21ksoftirqd/307:35:303
139391300,0ptp4l401ktimersoftd/311:46:323
139391300,0ptp4l401ktimersoftd/308:44:173
18239992925,2cyclictest41-21ksoftirqd/307:30:213
18239992923,4cyclictest41-21ksoftirqd/309:03:203
18239992923,4cyclictest41-21ksoftirqd/307:25:003
139391290,0ptp4l401ktimersoftd/310:43:203
18239992822,4cyclictest41-21ksoftirqd/311:55:533
18239992722,3cyclictest41-21ksoftirqd/309:23:453
18239992722,3cyclictest41-21ksoftirqd/308:06:223
18239992420,3cyclictest41-21ksoftirqd/310:20:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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