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2026-04-18 - 16:40
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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 rackdslot1.osadl.org (updated Sat Apr 18, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10452730,5sleep30-21swapper/310:30:133
134491710,6ptp4l41-21ksoftirqd/308:45:143
106382640,5sleep1535899cyclictest12:00:131
134491580,3ptp4l0-21swapper/311:24:583
134491570,4ptp4l0-21swapper/112:19:121
134491570,3ptp4l0-21swapper/311:30:163
134491560,3ptp4l0-21swapper/110:03:001
134491560,3ptp4l0-21swapper/010:05:360
134491550,4ptp4l0-21swapper/009:43:040
134491550,3ptp4l19770-21df_abs11:10:142
134491540,4ptp4l0-21swapper/110:20:121
134491540,3ptp4l0-21swapper/208:50:252
134491530,7ptp4l41-21ksoftirqd/310:42:083
134491530,5ptp4l0-21swapper/312:10:133
134491530,4ptp4l0-21swapper/112:34:301
134491530,4ptp4l0-21swapper/112:06:471
134491530,3ptp4l0-21swapper/209:15:142
134491520,6ptp4l0-21swapper/107:06:401
134491520,3ptp4l0-21swapper/312:20:253
134491520,3ptp4l0-21swapper/207:33:532
134491520,3ptp4l0-21swapper/107:48:281
134491510,5ptp4l0-21swapper/207:43:562
134491510,4ptp4l0-21swapper/311:02:413
134491510,4ptp4l0-21swapper/307:33:473
134491510,4ptp4l0-21swapper/110:38:251
134491510,4ptp4l0-21swapper/012:04:140
134491510,4ptp4l0-21swapper/008:46:280
134491510,4ptp4l0-21swapper/008:35:540
134491500,4ptp4l0-21swapper/308:40:063
134491500,4ptp4l0-21swapper/208:59:422
134491500,4ptp4l0-21swapper/111:51:091
134491500,4ptp4l0-21swapper/110:34:371
134491500,4ptp4l0-21swapper/109:49:541
134491500,4ptp4l0-21swapper/108:29:121
134491500,4ptp4l0-21swapper/108:01:251
134491500,4ptp4l0-21swapper/010:57:060
134491500,4ptp4l0-21swapper/010:51:130
134491500,4ptp4l0-21swapper/009:56:320
134491500,4ptp4l0-21swapper/009:09:440
134491490,8ptp4l3594-21iostat07:05:180
134491490,4ptp4l0-21swapper/311:35:423
134491490,4ptp4l0-21swapper/308:39:223
134491490,4ptp4l0-21swapper/207:53:562
134491490,4ptp4l0-21swapper/107:16:281
134491490,4ptp4l0-21swapper/009:13:590
134491490,3ptp4l0-21swapper/309:11:263
134491490,3ptp4l0-21swapper/111:04:521
134491490,3ptp4l0-21swapper/010:25:250
535999480,5cyclictest27546-21sshd09:05:252
5358994839,3cyclictest134491ptp4l11:15:171
134491480,4ptp4l0-21swapper/308:00:163
134491480,4ptp4l0-21swapper/208:41:502
134491480,4ptp4l0-21swapper/208:24:102
134491480,4ptp4l0-21swapper/108:22:541
134491480,4ptp4l0-21swapper/010:39:020
134491480,3ptp4l0-21swapper/209:34:502
134491480,3ptp4l0-21swapper/012:22:530
134491480,3ptp4l0-21swapper/008:11:340
134491480,13ptp4l0-21swapper/011:05:120
134491470,4ptp4l0-21swapper/310:28:343
134491470,4ptp4l0-21swapper/307:10:583
134491470,4ptp4l0-21swapper/110:13:041
134491470,4ptp4l0-21swapper/110:09:571
134491470,3ptp4l0-21swapper/212:00:392
134491470,3ptp4l0-21swapper/111:50:001
134491470,3ptp4l0-21swapper/108:43:511
134491470,3ptp4l0-21swapper/107:36:211
134491470,3ptp4l0-21swapper/009:32:320
134491470,3ptp4l0-21swapper/007:51:160
134491470,11ptp4l0-21swapper/008:31:550
134491460,4ptp4l0-21swapper/212:17:072
134491460,4ptp4l0-21swapper/012:31:570
134491460,4ptp4l0-21swapper/009:27:100
134491460,3ptp4l0-21swapper/108:33:161
134491460,3ptp4l0-21swapper/107:40:211
134491460,3ptp4l0-21swapper/011:15:160
134491460,3ptp4l0-21swapper/007:37:420
134491460,2ptp4l0-21swapper/312:04:073
134491460,2ptp4l0-21swapper/008:20:150
134491460,12ptp4l0-21swapper/011:55:000
5358994539,3cyclictest25-21ksoftirqd/107:35:011
5358994538,3cyclictest25-21ksoftirqd/109:25:001
134491450,5ptp4l0-21swapper/212:30:122
134491450,4ptp4l0-21swapper/309:27:233
134491450,4ptp4l0-21swapper/011:39:510
134491450,3ptp4l25457-21ntp_states11:20:222
134491450,3ptp4l0-21swapper/208:04:042
134491450,11ptp4l0-21swapper/011:42:320
134491450,10ptp4l0-21swapper/209:35:032
5358994411,5cyclictest25-21ksoftirqd/109:19:141
134491440,4ptp4l21561-21apt-get07:45:142
134491440,4ptp4l0-21swapper/312:25:183
134491440,3ptp4l0-21swapper/211:33:322
134491440,3ptp4l0-21swapper/109:41:511
134491440,3ptp4l0-21swapper/008:56:580
134491440,10ptp4l0-21swapper/310:09:303
5358994337,3cyclictest25-21ksoftirqd/110:00:001
5358994337,3cyclictest25-21ksoftirqd/109:00:001
5358994314,3cyclictest25-21ksoftirqd/111:08:411
5357994338,3cyclictest9-21ksoftirqd/008:10:000
134491430,9ptp4l0-21swapper/210:03:282
134491430,5ptp4l0-21swapper/312:15:143
134491430,5ptp4l0-21swapper/308:50:123
134491430,5ptp4l0-21swapper/308:20:103
134491430,4ptp4l15938-21ls11:00:212
134491430,4ptp4l0-21swapper/311:56:183
134491430,4ptp4l0-21swapper/311:25:403
134491430,4ptp4l0-21swapper/211:09:042
134491430,3ptp4l7644-21runrttasks10:44:140
535899426,11cyclictest25-21ksoftirqd/111:14:591
134491420,9ptp4l0-21swapper/010:01:060
134491420,8ptp4l0-21swapper/311:10:133
134491420,5ptp4l31354-21hddtemp_smartct09:15:170
134491420,4ptp4l846-21df08:10:141
134491420,4ptp4l7858-21df08:25:140
134491420,4ptp4l5661-21apt-get10:40:121
134491420,4ptp4l26852-21df11:25:141
134491420,4ptp4l26640-21apt-get11:25:122
134491420,4ptp4l24032-21apt-get09:00:133
134491420,4ptp4l22772-21iostat_ios12:25:180
134491420,4ptp4l0-21swapper/310:55:133
134491420,4ptp4l0-21swapper/307:56:123
134491420,4ptp4l0-21swapper/210:56:152
134491420,4ptp4l0-21swapper/112:22:241
134491420,3ptp4l4048-21ls08:15:221
134491420,3ptp4l0-21swapper/307:15:023
134491420,3ptp4l0-21swapper/108:09:371
134491420,3ptp4l0-21swapper/010:23:200
134491420,10ptp4l0-21swapper/207:18:382
536099410,2cyclictest121rcu_preempt12:30:593
535899415,3cyclictest121rcu_preempt12:35:131
5358994134,4cyclictest25-21ksoftirqd/112:00:011
535899413,3cyclictest121rcu_preempt09:35:231
134491410,7ptp4l0-21swapper/311:05:173
134491410,5ptp4l0-21swapper/309:30:143
134491410,5ptp4l0-21swapper/308:30:143
134491410,5ptp4l0-21swapper/207:35:252
134491410,5ptp4l0-21swapper/110:15:201
134491410,5ptp4l0-21swapper/109:30:221
134491410,5ptp4l0-21swapper/107:20:181
134491410,5ptp4l0-21swapper/012:35:250
134491410,4ptp4l5819-21hddtemp_smartct07:10:160
134491410,4ptp4l21025-21ntp_states12:20:232
134491410,4ptp4l17054-21apt-get09:55:122
134491410,4ptp4l15136-21hddtemp_smartct09:50:180
134491410,4ptp4l13973-21ls10:55:271
134491410,4ptp4l0-21swapper/309:22:103
134491410,4ptp4l0-21swapper/308:16:373
134491410,4ptp4l0-21swapper/307:35:153
134491410,4ptp4l0-21swapper/212:06:412
134491410,4ptp4l0-21swapper/211:42:332
134491410,4ptp4l0-21swapper/012:15:230
134491410,4ptp4l0-21swapper/008:15:210
134491410,3ptp4l9456-21ls10:45:261
134491410,3ptp4l5811-21apt-get11:50:122
134491410,3ptp4l30775-21apt-get08:05:143
134491410,3ptp4l3026-21apt-get08:15:132
134491410,3ptp4l27068-21hddtemp_smartct11:25:160
134491410,3ptp4l26793-21apt-get12:35:132
134491410,3ptp4l25192-21ls10:10:200
5358994034,3cyclictest25-21ksoftirqd/109:00:161
5358994034,3cyclictest25-21ksoftirqd/107:50:281
134491400,5ptp4l5847-21kworker/2:109:28:412
134491400,5ptp4l0-21swapper/309:35:123
134491400,5ptp4l0-21swapper/209:12:012
134491400,4ptp4l5178-21users11:45:280
134491400,4ptp4l41-21ksoftirqd/310:00:283
134491400,4ptp4l31298-21df10:25:141
134491400,4ptp4l25620-21awk09:00:280
134491400,4ptp4l1942-21memory10:30:210
134491400,4ptp4l0-21swapper/312:37:323
134491400,4ptp4l0-21swapper/310:50:163
134491400,4ptp4l0-21swapper/310:19:343
134491400,4ptp4l0-21swapper/309:50:043
134491400,4ptp4l0-21swapper/309:40:143
134491400,4ptp4l0-21swapper/307:47:473
134491400,4ptp4l0-21swapper/307:40:153
134491400,4ptp4l0-21swapper/212:10:212
134491400,4ptp4l0-21swapper/111:20:221
134491400,4ptp4l0-21swapper/107:10:241
134491400,4ptp4l0-21swapper/012:05:200
134491400,4ptp4l0-21swapper/011:20:180
134491400,4ptp4l0-21swapper/011:01:520
134491400,4ptp4l0-21swapper/007:40:280
134491400,3ptp4l9949-21apt-get08:30:132
134491400,3ptp4l8909-21memory10:45:200
134491400,3ptp4l23315-21ntp_states12:25:232
134491400,3ptp4l17123-21apt-get08:45:132
134491400,3ptp4l14917-21df09:50:161
134491400,3ptp4l10254-21apt-get10:50:122
134491400,3ptp4l0-21swapper/010:19:280
134491400,2ptp4l8815-21ls09:35:220
134491390,5ptp4l20088-21ps11:10:180
134491390,5ptp4l15049-21sed07:30:180
134491390,5ptp4l12729-21cut07:25:172
134491390,5ptp4l0-21swapper/311:40:123
134491390,5ptp4l0-21swapper/309:55:123
134491390,5ptp4l0-21swapper/210:39:452
134491390,5ptp4l0-21swapper/109:07:201
134491390,5ptp4l0-21swapper/008:40:180
134491390,4ptp4l4142-21meminfo09:25:191
134491390,4ptp4l30775-21apt-get08:05:132
134491390,4ptp4l0-21swapper/312:05:143
134491390,4ptp4l0-21swapper/311:45:193
134491390,4ptp4l0-21swapper/311:17:583
134491390,4ptp4l0-21swapper/310:37:373
134491390,4ptp4l0-21swapper/310:14:263
134491390,4ptp4l0-21swapper/309:15:043
134491390,4ptp4l0-21swapper/309:08:133
134491390,4ptp4l0-21swapper/308:25:163
134491390,4ptp4l0-21swapper/308:10:293
134491390,4ptp4l0-21swapper/307:50:203
134491390,4ptp4l0-21swapper/307:20:023
134491390,4ptp4l0-21swapper/209:04:112
134491390,4ptp4l0-21swapper/208:39:282
134491390,4ptp4l0-21swapper/208:25:172
134491390,4ptp4l0-21swapper/112:25:111
134491390,4ptp4l0-21swapper/111:44:091
134491390,4ptp4l0-21swapper/111:30:201
134491390,4ptp4l0-21swapper/110:50:211
134491390,4ptp4l0-21swapper/109:11:451
134491390,4ptp4l0-21swapper/108:49:321
134491390,4ptp4l0-21swapper/107:25:241
134491390,4ptp4l0-21swapper/012:10:170
134491390,4ptp4l0-21swapper/011:55:140
134491390,4ptp4l0-21swapper/011:31:550
134491390,4ptp4l0-21swapper/009:21:390
134491390,4ptp4l0-21swapper/008:00:000
134491390,4ptp4l0-21swapper/007:27:240
134491390,4ptp4l0-21swapper/007:20:510
134491390,4ptp4l0-21swapper/007:15:120
134491390,3ptp4l9058-21meminfo11:55:192
134491390,3ptp4l10578-21iostat07:20:182
134491390,3ptp4l0-21swapper/310:45:443
134491390,3ptp4l0-21swapper/211:45:282
134491390,3ptp4l0-21swapper/209:20:122
134491390,3ptp4l0-21swapper/111:39:041
5358993833,3cyclictest25-21ksoftirqd/108:50:141
134491380,5ptp4l0-21swapper/308:57:513
134491380,4ptp4l0-21swapper/309:48:423
134491380,4ptp4l0-21swapper/307:28:023
134491380,4ptp4l0-21swapper/211:35:362
134491380,4ptp4l0-21swapper/211:15:022
134491380,4ptp4l0-21swapper/210:46:542
134491380,4ptp4l0-21swapper/210:32:042
134491380,4ptp4l0-21swapper/210:19:502
134491380,4ptp4l0-21swapper/210:05:342
134491380,4ptp4l0-21swapper/207:55:282
134491380,4ptp4l0-21swapper/207:10:222
134491380,4ptp4l0-21swapper/112:12:591
134491380,4ptp4l0-21swapper/108:35:041
134491380,4ptp4l0-21swapper/107:58:391
134491380,4ptp4l0-21swapper/009:49:340
134491380,4ptp4l0-21swapper/008:50:190
134491380,4ptp4l0-21swapper/008:00:240
134491380,4ptp4l0-21swapper/007:45:260
134491380,3ptp4l0-21swapper/311:50:183
134491370,4ptp4l0-21swapper/310:24:463
134491370,4ptp4l0-21swapper/210:40:352
134491370,4ptp4l0-21swapper/209:50:022
134491370,3ptp4l0-21swapper/210:26:342
134491370,3ptp4l0-21swapper/210:21:062
134491370,3ptp4l0-21swapper/209:47:402
134491370,3ptp4l0-21swapper/208:12:332
134491360,4ptp4l0-21swapper/210:10:582
134491360,4ptp4l0-21swapper/209:40:222
137891233,13phc2sys4898-21sshd07:07:543
34832204,10sleep20-21swapper/207:05:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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