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2026-03-20 - 07:52
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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 Fri Mar 20, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2609121540,5sleep20-21swapper/223:25:002
1350821300,5sleep1494599cyclictest21:45:211
4945997333,10cyclictest25-21ksoftirqd/121:05:001
4945996833,4cyclictest25-21ksoftirqd/100:00:311
4946996626,8cyclictest33-21ksoftirqd/200:40:012
4945996633,5cyclictest25-21ksoftirqd/119:25:141
4945996535,9cyclictest25-21ksoftirqd/100:15:011
4945996431,5cyclictest25-21ksoftirqd/119:15:131
4946996328,10cyclictest33-21ksoftirqd/219:20:002
4945996332,4cyclictest25-21ksoftirqd/121:20:281
4945996331,3cyclictest25-21ksoftirqd/122:30:011
4945996329,4cyclictest25-21ksoftirqd/121:05:151
4944996331,8cyclictest9-21ksoftirqd/020:50:000
4946996217,4cyclictest33-21ksoftirqd/222:40:002
4945996234,4cyclictest25-21ksoftirqd/120:50:241
4945996233,8cyclictest25-21ksoftirqd/123:50:131
4945996232,10cyclictest25-21ksoftirqd/123:45:001
4945996230,3cyclictest25-21ksoftirqd/122:35:151
4945996229,5cyclictest25-21ksoftirqd/123:05:141
4944996229,8cyclictest9-21ksoftirqd/000:07:050
4944996229,8cyclictest9-21ksoftirqd/000:07:050
4944996220,10cyclictest9-21ksoftirqd/021:50:000
4946996129,5cyclictest33-21ksoftirqd/223:59:312
494699612,35cyclictest0-21swapper/220:15:202
4945996133,5cyclictest25-21ksoftirqd/122:40:171
4945996129,3cyclictest25-21ksoftirqd/121:12:541
4947996027,3cyclictest41-21ksoftirqd/322:01:453
4946996028,5cyclictest33-21ksoftirqd/222:42:442
4945996032,9cyclictest25-21ksoftirqd/122:50:201
4945996032,10cyclictest25-21ksoftirqd/121:50:151
4945996029,3cyclictest25-21ksoftirqd/123:23:381
4945996028,3cyclictest25-21ksoftirqd/120:08:201
134491600,4ptp4l26793-21irqstats19:55:180
4946995926,7cyclictest33-21ksoftirqd/222:25:262
4946995919,4cyclictest33-21ksoftirqd/200:07:052
4946995919,4cyclictest33-21ksoftirqd/200:07:052
4945995932,10cyclictest25-21ksoftirqd/123:20:011
4945995931,9cyclictest25-21ksoftirqd/120:15:261
4945995931,9cyclictest25-21ksoftirqd/120:10:211
4945995930,3cyclictest25-21ksoftirqd/120:42:461
4945995929,5cyclictest25-21ksoftirqd/122:30:151
4947995824,9cyclictest41-21ksoftirqd/322:15:003
4946995824,9cyclictest33-21ksoftirqd/220:35:272
4946995823,5cyclictest33-21ksoftirqd/219:50:262
4946995822,4cyclictest33-21ksoftirqd/223:00:262
4946995815,9cyclictest33-21ksoftirqd/220:45:132
4945995834,4cyclictest25-21ksoftirqd/119:40:221
4945995829,4cyclictest25-21ksoftirqd/122:20:241
4944995826,7cyclictest9-21ksoftirqd/020:50:240
134491580,5ptp4l0-21swapper/000:30:130
134491580,4ptp4l7958-21diskstats20:25:151
134491580,4ptp4l12274-21apt-get00:05:031
134491580,4ptp4l12274-21apt-get00:05:031
4947995723,7cyclictest41-21ksoftirqd/323:25:193
494699573,28cyclictest0-21swapper/221:05:242
4946995731,8cyclictest33-21ksoftirqd/221:37:432
4946995724,12cyclictest33-21ksoftirqd/200:25:002
4946995721,10cyclictest33-21ksoftirqd/222:15:132
4945995735,7cyclictest25-21ksoftirqd/119:35:201
4945995732,5cyclictest25-21ksoftirqd/122:45:231
4945995730,9cyclictest25-21ksoftirqd/123:35:211
4945995730,4cyclictest25-21ksoftirqd/122:08:531
4945995729,8cyclictest25-21ksoftirqd/120:55:281
4944995728,3cyclictest9-21ksoftirqd/019:45:010
4944995725,6cyclictest9-21ksoftirqd/023:25:210
4944995722,7cyclictest9-21ksoftirqd/023:30:270
4944995718,10cyclictest9-21ksoftirqd/000:11:400
134491570,4ptp4l0-21swapper/121:15:241
134491570,3ptp4l0-21swapper/019:31:520
134491570,3ptp4l0-21swapper/019:31:520
4947995632,10cyclictest41-21ksoftirqd/322:46:303
4947995623,9cyclictest41-21ksoftirqd/322:35:183
4946995627,8cyclictest33-21ksoftirqd/221:44:462
4946995625,5cyclictest33-21ksoftirqd/220:08:132
4946995623,7cyclictest33-21ksoftirqd/223:44:472
4946995623,4cyclictest33-21ksoftirqd/223:46:532
494699562,30cyclictest0-21swapper/221:50:172
4946995618,9cyclictest33-21ksoftirqd/219:41:082
494699561,3cyclictest0-21swapper/200:30:202
4944995627,8cyclictest9-21ksoftirqd/000:20:270
4944995623,8cyclictest9-21ksoftirqd/020:20:220
4944995623,6cyclictest9-21ksoftirqd/020:06:530
35692560,3sleep0494499cyclictest22:35:150
134491560,3ptp4l0-21swapper/023:45:290
4947995525,4cyclictest41-21ksoftirqd/321:07:003
4947995519,9cyclictest41-21ksoftirqd/319:55:263
494699553,3cyclictest121rcu_preempt22:45:262
4946995521,11cyclictest33-21ksoftirqd/220:51:222
4945995531,4cyclictest25-21ksoftirqd/100:35:221
4945995530,8cyclictest25-21ksoftirqd/119:55:001
4944995524,9cyclictest9-21ksoftirqd/021:20:250
134491550,4ptp4l0-21swapper/019:50:150
134491550,3ptp4l0-21swapper/023:09:450
4946995427,4cyclictest33-21ksoftirqd/200:25:192
4946995422,11cyclictest33-21ksoftirqd/220:03:552
4946995421,11cyclictest33-21ksoftirqd/221:11:142
4946995419,9cyclictest33-21ksoftirqd/220:10:192
494599545,2cyclictest25-21ksoftirqd/121:35:281
4945995433,4cyclictest25-21ksoftirqd/121:25:261
4944995426,8cyclictest9-21ksoftirqd/019:21:040
4944995425,6cyclictest9-21ksoftirqd/021:20:000
4944995419,6cyclictest9-21ksoftirqd/021:15:010
4947995335,5cyclictest41-21ksoftirqd/323:03:303
4947995317,4cyclictest41-21ksoftirqd/321:35:013
4946995319,4cyclictest33-21ksoftirqd/220:25:142
4946995318,4cyclictest33-21ksoftirqd/221:25:202
4946995317,4cyclictest33-21ksoftirqd/219:23:472
4946995315,4cyclictest33-21ksoftirqd/220:55:232
4945995332,9cyclictest25-21ksoftirqd/123:00:231
4945995331,10cyclictest25-21ksoftirqd/119:10:171
4945995329,4cyclictest25-21ksoftirqd/119:25:001
4944995329,7cyclictest9-21ksoftirqd/020:30:300
4944995327,9cyclictest9-21ksoftirqd/023:10:120
4944995325,4cyclictest9-21ksoftirqd/022:50:140
4944995323,6cyclictest9-21ksoftirqd/021:03:290
4944995322,4cyclictest9-21ksoftirqd/021:25:250
4944995321,7cyclictest9-21ksoftirqd/022:13:250
4944995319,5cyclictest9-21ksoftirqd/020:25:260
4944995316,4cyclictest9-21ksoftirqd/020:16:330
134491530,4ptp4l6390-21needreboot20:20:211
134491530,4ptp4l0-21swapper/119:47:351
4947995234,9cyclictest41-21ksoftirqd/323:00:013
4947995227,9cyclictest41-21ksoftirqd/322:40:183
4946995222,4cyclictest33-21ksoftirqd/220:40:142
4946995221,10cyclictest33-21ksoftirqd/200:03:282
4946995219,5cyclictest33-21ksoftirqd/219:25:152
4946995217,10cyclictest33-21ksoftirqd/221:15:242
4946995216,5cyclictest33-21ksoftirqd/221:56:482
4946995214,9cyclictest33-21ksoftirqd/223:30:202
4945995231,4cyclictest25-21ksoftirqd/123:10:191
4945995223,7cyclictest25-21ksoftirqd/100:15:481
4944995222,7cyclictest9-21ksoftirqd/023:35:180
4944995220,4cyclictest9-21ksoftirqd/019:10:220
4944995219,4cyclictest9-21ksoftirqd/022:45:220
4944995218,5cyclictest9-21ksoftirqd/022:01:180
4944995218,3cyclictest9-21ksoftirqd/022:40:220
4944995214,7cyclictest9-21ksoftirqd/000:28:060
134491520,6ptp4l0-21swapper/119:05:121
134491520,4ptp4l0-21swapper/119:33:301
134491520,4ptp4l0-21swapper/119:33:301
4947995130,10cyclictest41-21ksoftirqd/319:42:323
4947995125,3cyclictest41-21ksoftirqd/300:05:333
4947995125,3cyclictest41-21ksoftirqd/300:05:333
4947995116,9cyclictest41-21ksoftirqd/319:25:443
494699512,29cyclictest0-21swapper/221:02:372
494699512,27cyclictest0-21swapper/221:30:192
4946995120,8cyclictest33-21ksoftirqd/223:27:012
4946995119,5cyclictest33-21ksoftirqd/222:20:132
4946995119,5cyclictest33-21ksoftirqd/222:09:352
4946995119,4cyclictest33-21ksoftirqd/221:24:352
4946995118,9cyclictest33-21ksoftirqd/223:15:242
4946995118,9cyclictest33-21ksoftirqd/219:55:182
4946995117,11cyclictest33-21ksoftirqd/223:05:182
4946995116,5cyclictest33-21ksoftirqd/221:48:452
4946995116,4cyclictest33-21ksoftirqd/200:17:522
4946995111,9cyclictest33-21ksoftirqd/222:10:182
4945995133,9cyclictest25-21ksoftirqd/122:10:121
4944995123,6cyclictest9-21ksoftirqd/000:15:170
4944995121,8cyclictest9-21ksoftirqd/022:20:260
4944995120,8cyclictest9-21ksoftirqd/021:05:240
4944995118,4cyclictest9-21ksoftirqd/021:50:220
4944995117,9cyclictest9-21ksoftirqd/022:28:380
4944995116,9cyclictest9-21ksoftirqd/021:57:500
134491510,4ptp4l0-21swapper/120:37:171
134491510,4ptp4l0-21swapper/019:25:360
4947995030,9cyclictest41-21ksoftirqd/319:51:463
4947995018,9cyclictest41-21ksoftirqd/320:10:243
4947995016,9cyclictest41-21ksoftirqd/300:15:223
4947995011,9cyclictest41-21ksoftirqd/321:25:143
4946995017,11cyclictest33-21ksoftirqd/200:10:262
4946995014,5cyclictest33-21ksoftirqd/223:14:342
4946995014,5cyclictest33-21ksoftirqd/219:34:142
4946995014,5cyclictest33-21ksoftirqd/219:34:142
4946995014,4cyclictest33-21ksoftirqd/222:31:252
494599504,3cyclictest25-21ksoftirqd/123:30:211
4944995031,9cyclictest18821-21kworker/0:221:36:050
4944995025,8cyclictest9-21ksoftirqd/000:00:140
4944995024,7cyclictest9-21ksoftirqd/023:50:150
4944995021,4cyclictest9-21ksoftirqd/021:40:130
4944995020,4cyclictest9-21ksoftirqd/020:10:140
4944995019,9cyclictest9-21ksoftirqd/023:20:260
4944995019,4cyclictest9-21ksoftirqd/019:15:150
4944995018,4cyclictest9-21ksoftirqd/021:30:150
4944995016,6cyclictest9-21ksoftirqd/022:15:210
4944995012,7cyclictest9-21ksoftirqd/020:40:270
134491500,4ptp4l0-21swapper/022:07:230
134491500,4ptp4l0-21swapper/020:59:320
4947994933,7cyclictest41-21ksoftirqd/321:55:123
4947994932,5cyclictest41-21ksoftirqd/321:10:283
4947994916,5cyclictest41-21ksoftirqd/300:30:003
4947994915,4cyclictest41-21ksoftirqd/320:55:283
4946994920,10cyclictest33-21ksoftirqd/222:02:392
4946994919,8cyclictest33-21ksoftirqd/219:10:162
494599494,3cyclictest25-21ksoftirqd/120:49:591
494599494,2cyclictest25-21ksoftirqd/100:20:261
494599493,2cyclictest121rcu_preempt21:35:001
4944994917,7cyclictest9-21ksoftirqd/023:00:140
134491490,4ptp4l0-21swapper/120:04:091
134491490,4ptp4l0-21swapper/100:26:291
134491490,4ptp4l0-21swapper/019:46:230
494799487,4cyclictest41-21ksoftirqd/320:00:193
494799484,8cyclictest41-21ksoftirqd/323:10:253
4947994834,6cyclictest41-21ksoftirqd/323:05:233
4947994833,7cyclictest41-21ksoftirqd/319:45:203
4947994815,6cyclictest41-21ksoftirqd/322:50:213
4946994824,12cyclictest33-21ksoftirqd/222:53:282
4946994822,6cyclictest33-21ksoftirqd/219:37:432
4946994820,9cyclictest33-21ksoftirqd/220:35:012
4946994820,6cyclictest33-21ksoftirqd/222:55:242
4946994817,4cyclictest33-21ksoftirqd/223:35:172
4946994814,4cyclictest33-21ksoftirqd/220:20:462
4946994814,4cyclictest33-21ksoftirqd/219:45:372
4945994831,9cyclictest25-21ksoftirqd/122:00:251
4944994836,4cyclictest18821-21kworker/0:220:03:370
4944994813,9cyclictest9-21ksoftirqd/023:16:120
134491480,7ptp4l3180-21iostat_ios19:05:180
494799476,9cyclictest41-21ksoftirqd/300:00:313
4947994732,6cyclictest41-21ksoftirqd/319:15:163
4947994732,4cyclictest41-21ksoftirqd/322:05:233
4947994730,7cyclictest41-21ksoftirqd/320:33:443
4947994729,9cyclictest41-21ksoftirqd/319:10:253
4947994725,12cyclictest41-21ksoftirqd/322:20:143
4947994719,3cyclictest1301-21snmpd20:39:553
4947994718,9cyclictest41-21ksoftirqd/320:50:293
4946994728,9cyclictest33-21ksoftirqd/223:53:302
494599474,6cyclictest25-21ksoftirqd/123:56:421
494599473,2cyclictest0-21swapper/123:45:221
4945994732,5cyclictest25-21ksoftirqd/122:15:281
4944994730,8cyclictest9-21ksoftirqd/022:30:230
4944994717,9cyclictest9-21ksoftirqd/019:35:150
4944994716,4cyclictest9-21ksoftirqd/023:43:450
4944994716,4cyclictest9-21ksoftirqd/020:35:250
4944994716,4cyclictest9-21ksoftirqd/000:35:140
4944994715,6cyclictest9-21ksoftirqd/023:55:190
4944994712,4cyclictest9-21ksoftirqd/022:55:150
4947994630,9cyclictest41-21ksoftirqd/323:20:123
4947994629,7cyclictest41-21ksoftirqd/323:15:263
4947994619,10cyclictest41-21ksoftirqd/323:45:153
4947994610,8cyclictest41-21ksoftirqd/320:15:283
4947994610,4cyclictest41-21ksoftirqd/321:46:223
494599463,7cyclictest25-21ksoftirqd/100:35:001
494599463,3cyclictest121rcu_preempt19:50:261
4947994530,7cyclictest41-21ksoftirqd/323:38:453
4947994530,6cyclictest41-21ksoftirqd/323:51:423
4947994529,7cyclictest41-21ksoftirqd/320:05:173
4947994512,9cyclictest41-21ksoftirqd/321:50:063
4947994511,9cyclictest41-21ksoftirqd/300:13:403
494599454,6cyclictest25-21ksoftirqd/122:55:141
494599451,2cyclictest121rcu_preempt23:25:221
4947994438,3cyclictest41-21ksoftirqd/323:45:003
4947994429,6cyclictest41-21ksoftirqd/323:55:173
4947994428,7cyclictest41-21ksoftirqd/321:00:443
4947994428,4cyclictest41-21ksoftirqd/319:35:183
4947994412,9cyclictest41-21ksoftirqd/319:35:013
4947994412,9cyclictest41-21ksoftirqd/319:35:013
494599441,2cyclictest121rcu_preempt21:55:111
494799439,4cyclictest41-21ksoftirqd/321:21:503
494799438,9cyclictest41-21ksoftirqd/320:48:153
4947994331,4cyclictest41-21ksoftirqd/300:35:183
4947994326,7cyclictest41-21ksoftirqd/323:30:143
494799431,5cyclictest41-21ksoftirqd/321:15:123
4947994311,4cyclictest41-21ksoftirqd/321:42:573
494599432,3cyclictest25-21ksoftirqd/121:40:131
4945994323,10cyclictest25-21ksoftirqd/120:30:131
494799426,4cyclictest41-21ksoftirqd/322:15:173
494799426,4cyclictest41-21ksoftirqd/320:20:253
4947994222,10cyclictest41-21ksoftirqd/320:43:463
4947994213,8cyclictest41-21ksoftirqd/321:36:063
494799417,8cyclictest41-21ksoftirqd/322:32:583
494799416,3cyclictest121rcu_preempt00:34:283
4947994015,12cyclictest41-21ksoftirqd/322:27:523
494799398,9cyclictest41-21ksoftirqd/319:24:193
4947993925,6cyclictest41-21ksoftirqd/320:25:143
494799391,3cyclictest121rcu_preempt00:20:183
134491320,5ptp4l0-21swapper/319:06:253
134491310,5ptp4l0-21swapper/219:06:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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