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2026-06-01 - 00:17
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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 Sun May 31, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300921430,2sleep01993099cyclictest08:50:180
1779521430,7sleep21993299cyclictest11:40:182
134491650,6ptp4l0-21swapper/007:50:280
134491650,6ptp4l0-21swapper/007:50:280
134491640,3ptp4l0-21swapper/007:45:290
134491610,3ptp4l9403-21apt-get09:05:120
162602600,5sleep016264-21latency_hist10:30:000
134491600,3ptp4l0-21swapper/208:30:252
134491590,4ptp4l0-21swapper/209:15:232
134491590,4ptp4l0-21swapper/209:15:222
134491590,4ptp4l0-21swapper/007:15:210
134491590,3ptp4l3225-21ls07:40:271
134491590,3ptp4l27991-21ntp_states07:25:231
134491580,5ptp4l0-21swapper/107:55:281
134491580,3ptp4l5901-21ls10:05:210
134491570,4ptp4l0-21swapper/311:25:053
134491570,3ptp4l0-21swapper/108:10:131
134491570,3ptp4l0-21swapper/012:20:280
134491570,3ptp4l0-21swapper/007:20:250
134491560,3ptp4l0-21swapper/308:55:093
134491560,3ptp4l0-21swapper/209:43:412
134491560,17ptp4l0-21swapper/208:45:392
19933995523,4cyclictest41-21ksoftirqd/312:30:003
19933995523,4cyclictest41-21ksoftirqd/311:55:023
19933995523,4cyclictest41-21ksoftirqd/308:39:503
19933995522,8cyclictest41-21ksoftirqd/309:02:163
19933995522,4cyclictest41-21ksoftirqd/310:15:193
19933995423,4cyclictest41-21ksoftirqd/311:19:173
19933995421,4cyclictest41-21ksoftirqd/309:31:253
19933995420,7cyclictest41-21ksoftirqd/307:41:283
19933995419,4cyclictest41-21ksoftirqd/309:52:023
19933995419,4cyclictest41-21ksoftirqd/309:52:023
19930995424,4cyclictest9-21ksoftirqd/010:35:010
134491540,3ptp4l0-21swapper/111:20:061
19933995323,4cyclictest41-21ksoftirqd/312:10:353
19933995322,8cyclictest41-21ksoftirqd/309:35:233
19933995322,4cyclictest41-21ksoftirqd/311:40:173
19933995321,5cyclictest41-21ksoftirqd/308:08:133
19933995321,3cyclictest41-21ksoftirqd/311:23:103
19933995318,5cyclictest41-21ksoftirqd/309:23:493
134491530,4ptp4l0-21swapper/211:38:312
134491530,3ptp4l0-21swapper/110:18:571
134491530,10ptp4l0-21swapper/211:55:252
19933995221,7cyclictest41-21ksoftirqd/308:10:233
19933995218,4cyclictest41-21ksoftirqd/308:21:083
134491520,5ptp4l0-21swapper/007:05:120
134491520,3ptp4l0-21swapper/207:10:142
134491520,3ptp4l0-21swapper/008:24:430
134491520,11ptp4l0-21swapper/107:05:141
19933995120,3cyclictest41-21ksoftirqd/310:44:043
134491510,4ptp4l0-21swapper/210:42:482
134491510,4ptp4l0-21swapper/109:59:551
134491510,3ptp4l0-21swapper/209:50:372
134491510,3ptp4l0-21swapper/209:50:372
134491510,3ptp4l0-21swapper/110:53:441
134491510,3ptp4l0-21swapper/011:10:120
134491510,3ptp4l0-21swapper/010:45:460
134491510,3ptp4l0-21swapper/010:00:150
1993399509,4cyclictest41-21ksoftirqd/312:05:003
19933995022,7cyclictest41-21ksoftirqd/310:10:003
19933995020,3cyclictest41-21ksoftirqd/311:49:083
19933995019,4cyclictest41-21ksoftirqd/308:48:573
19933995015,7cyclictest41-21ksoftirqd/308:30:273
19933995014,7cyclictest41-21ksoftirqd/307:20:133
134491500,9ptp4l0-21swapper/107:20:261
134491500,4ptp4l0-21swapper/307:53:073
134491500,4ptp4l0-21swapper/307:53:073
134491500,4ptp4l0-21swapper/107:46:081
134491500,3ptp4l0-21swapper/208:03:172
19933994920,9cyclictest41-21ksoftirqd/310:33:223
19933994918,7cyclictest41-21ksoftirqd/309:45:273
19933994918,4cyclictest41-21ksoftirqd/311:05:533
19933994917,6cyclictest41-21ksoftirqd/311:10:173
134491490,6ptp4l33-21ksoftirqd/212:23:192
134491490,4ptp4l0-21swapper/207:15:192
134491490,4ptp4l0-21swapper/112:33:501
134491490,4ptp4l0-21swapper/111:31:441
134491490,4ptp4l0-21swapper/110:56:321
134491490,4ptp4l0-21swapper/007:32:060
134491490,3ptp4l0-21swapper/309:10:313
134491490,3ptp4l0-21swapper/209:02:222
134491490,3ptp4l0-21swapper/112:18:501
19933994822,3cyclictest41-21ksoftirqd/307:17:123
19933994819,8cyclictest41-21ksoftirqd/309:40:123
19933994818,3cyclictest41-21ksoftirqd/310:58:433
134491480,4ptp4l0-21swapper/109:33:521
134491480,4ptp4l0-21swapper/011:44:530
134491480,4ptp4l0-21swapper/008:59:300
134491480,3ptp4l0-21swapper/212:00:352
134491480,3ptp4l0-21swapper/108:27:421
134491480,3ptp4l0-21swapper/108:27:421
19933994718,7cyclictest41-21ksoftirqd/311:50:133
19933994717,7cyclictest41-21ksoftirqd/311:30:193
19933994716,3cyclictest41-21ksoftirqd/312:10:003
134491470,4ptp4l0-21swapper/309:16:083
134491470,4ptp4l0-21swapper/309:16:083
134491470,4ptp4l0-21swapper/111:29:551
134491470,4ptp4l0-21swapper/111:17:001
134491470,4ptp4l0-21swapper/111:00:371
134491470,4ptp4l0-21swapper/109:27:041
134491470,4ptp4l0-21swapper/109:06:211
134491470,4ptp4l0-21swapper/012:09:540
134491470,3ptp4l0-21swapper/110:21:371
1993399468,7cyclictest41-21ksoftirqd/310:25:473
1993399464,8cyclictest41-21ksoftirqd/308:42:183
19933994618,3cyclictest41-21ksoftirqd/307:38:273
19933994615,3cyclictest41-21ksoftirqd/307:25:143
19933994611,5cyclictest41-21ksoftirqd/307:10:253
134491460,4ptp4l0-21swapper/009:29:520
134491460,4ptp4l0-21swapper/009:23:080
134491460,3ptp4l0-21swapper/207:36:132
19933994539,3cyclictest41-21ksoftirqd/312:35:003
134491450,4ptp4l1077-21ls08:45:210
134491450,4ptp4l0-21swapper/308:15:183
134491450,4ptp4l0-21swapper/307:55:493
134491450,3ptp4l0-21swapper/111:51:261
134491450,3ptp4l0-21swapper/108:58:121
134491450,11ptp4l2630-21cstates08:50:141
1993399448,7cyclictest41-21ksoftirqd/307:30:213
1993399448,4cyclictest41-21ksoftirqd/307:45:223
19933994419,6cyclictest41-21ksoftirqd/311:35:273
19933994416,7cyclictest41-21ksoftirqd/310:00:173
134491440,8ptp4l0-21swapper/011:27:100
134491440,7ptp4l0-21swapper/208:42:332
134491440,4ptp4l0-21swapper/110:11:121
134491440,3ptp4l0-21swapper/211:25:352
134491440,3ptp4l0-21swapper/210:25:362
134491440,3ptp4l0-21swapper/111:05:051
134491440,3ptp4l0-21swapper/109:36:351
134491440,3ptp4l0-21swapper/009:50:270
134491440,3ptp4l0-21swapper/009:50:270
1993399439,8cyclictest41-21ksoftirqd/308:25:273
1993399439,8cyclictest41-21ksoftirqd/308:25:273
19933994315,3cyclictest41-21ksoftirqd/310:35:243
19933994314,6cyclictest41-21ksoftirqd/310:24:593
19933994310,4cyclictest41-21ksoftirqd/309:05:143
134491430,9ptp4l0-21swapper/210:30:472
134491430,9ptp4l0-21swapper/009:19:590
134491430,9ptp4l0-21swapper/009:19:580
134491430,9ptp4l0-21swapper/007:27:420
134491430,6ptp4l0-21swapper/109:16:131
134491430,6ptp4l0-21swapper/109:16:131
134491430,4ptp4l0-21swapper/207:26:212
134491430,3ptp4l0-21swapper/108:44:241
134491430,3ptp4l0-21swapper/108:04:091
134491430,3ptp4l0-21swapper/107:38:221
1993399429,4cyclictest41-21ksoftirqd/308:04:513
19933994236,3cyclictest41-21ksoftirqd/312:15:143
19933994232,3cyclictest41-21ksoftirqd/310:10:133
19933994232,3cyclictest41-21ksoftirqd/309:55:033
19933994210,8cyclictest41-21ksoftirqd/312:20:133
1993399420,2cyclictest121rcu_preempt11:05:013
134491420,5ptp4l6473-21ls12:25:210
134491420,4ptp4l9547-21meminfo07:55:200
134491420,4ptp4l23898-21df_inode10:45:141
134491420,4ptp4l14315-21apt-get11:35:130
134491420,4ptp4l11700-21apt-get09:10:122
134491420,4ptp4l0-21swapper/112:39:051
134491420,3ptp4l0-21swapper/112:28:161
134491420,3ptp4l0-21swapper/108:17:441
1993399419,7cyclictest41-21ksoftirqd/310:45:153
1993399416,3cyclictest41-21ksoftirqd/310:50:283
134491410,5ptp4l1993099cyclictest08:00:240
134491410,5ptp4l0-21swapper/109:40:211
134491410,4ptp4l29188-21iostat_ios12:05:201
134491410,4ptp4l26459-21iostat10:50:180
134491410,4ptp4l26391-21df_inode12:00:120
134491410,4ptp4l20308-21ntp_states11:45:232
134491410,4ptp4l15670-21ls10:25:261
134491410,4ptp4l0-21swapper/209:55:242
134491410,4ptp4l0-21swapper/110:33:301
134491410,4ptp4l0-21swapper/110:09:321
134491410,4ptp4l0-21swapper/107:12:391
134491410,4ptp4l0-21swapper/009:35:300
134491410,3ptp4l7321-21ls07:50:212
134491410,3ptp4l7321-21ls07:50:212
134491410,3ptp4l0-21swapper/209:35:122
19933994023,8cyclictest41-21ksoftirqd/309:29:123
134491400,5ptp4l1742-21ls12:15:190
134491400,5ptp4l0-21swapper/308:51:243
134491400,5ptp4l0-21swapper/211:50:352
134491400,5ptp4l0-21swapper/208:05:122
134491400,5ptp4l0-21swapper/111:38:321
134491400,4ptp4l29953-21iostat_ios07:30:181
134491400,4ptp4l18538-21apt-get10:35:021
134491400,4ptp4l0-21swapper/212:35:042
134491400,4ptp4l0-21swapper/212:15:292
134491400,4ptp4l0-21swapper/208:24:582
134491400,4ptp4l0-21swapper/207:57:302
134491400,4ptp4l0-21swapper/108:30:201
134491400,4ptp4l0-21swapper/010:30:090
134491400,4ptp4l0-21swapper/010:21:150
134491400,4ptp4l0-21swapper/009:45:260
134491400,4ptp4l0-21swapper/009:43:260
134491400,4ptp4l0-21swapper/009:00:010
134491400,4ptp4l0-21swapper/008:28:230
134491400,4ptp4l0-21swapper/008:28:230
134491400,4ptp4l0-21swapper/008:13:470
134491400,4ptp4l0-21swapper/008:07:000
134491400,4ptp4l0-21swapper/007:40:050
134491400,4ptp4l0-21swapper/007:39:320
134491400,4ptp4l0-21swapper/007:10:280
134491400,3ptp4l29358-21apt-get07:30:042
134491400,3ptp4l27870-21apt-get08:35:112
134491400,3ptp4l22249-21meminfo10:40:210
134491400,3ptp4l16618-21df_inode09:20:161
134491400,3ptp4l0-21swapper/208:55:362
134491400,3ptp4l0-21swapper/107:15:231
134491400,3ptp4l0-21swapper/010:13:430
19933993934,3cyclictest41-21ksoftirqd/312:35:133
19930993934,3cyclictest9-21ksoftirqd/011:30:130
134491390,5ptp4l0-21swapper/212:12:312
134491390,5ptp4l0-21swapper/112:20:121
134491390,5ptp4l0-21swapper/109:45:261
134491390,4ptp4l523-21dump-pmu-power12:15:010
134491390,4ptp4l32578-21users12:10:281
134491390,4ptp4l13754-21/usr/sbin/munin08:05:181
134491390,4ptp4l0-21swapper/212:31:472
134491390,4ptp4l0-21swapper/212:28:522
134491390,4ptp4l0-21swapper/212:09:412
134491390,4ptp4l0-21swapper/211:33:322
134491390,4ptp4l0-21swapper/211:22:002
134491390,4ptp4l0-21swapper/211:06:582
134491390,4ptp4l0-21swapper/210:51:362
134491390,4ptp4l0-21swapper/210:46:562
134491390,4ptp4l0-21swapper/210:37:082
134491390,4ptp4l0-21swapper/210:21:412
134491390,4ptp4l0-21swapper/210:15:142
134491390,4ptp4l0-21swapper/210:09:452
134491390,4ptp4l0-21swapper/210:03:252
134491390,4ptp4l0-21swapper/209:45:212
134491390,4ptp4l0-21swapper/209:32:222
134491390,4ptp4l0-21swapper/209:27:112
134491390,4ptp4l0-21swapper/209:20:252
134491390,4ptp4l0-21swapper/209:07:492
134491390,4ptp4l0-21swapper/208:51:442
134491390,4ptp4l0-21swapper/208:15:212
134491390,4ptp4l0-21swapper/208:10:172
134491390,4ptp4l0-21swapper/207:20:112
134491390,4ptp4l0-21swapper/111:45:141
134491390,4ptp4l0-21swapper/111:40:221
134491390,4ptp4l0-21swapper/109:50:231
134491390,4ptp4l0-21swapper/109:50:231
134491390,4ptp4l0-21swapper/108:20:241
134491390,4ptp4l0-21swapper/011:55:080
134491390,4ptp4l0-21swapper/011:50:030
134491390,4ptp4l0-21swapper/011:46:230
134491390,4ptp4l0-21swapper/011:05:350
134491390,4ptp4l0-21swapper/011:00:450
134491390,4ptp4l0-21swapper/010:57:480
134491390,4ptp4l0-21swapper/009:57:190
134491390,4ptp4l0-21swapper/009:10:240
134491390,4ptp4l0-21swapper/008:40:190
134491390,4ptp4l0-21swapper/008:38:150
134491390,4ptp4l0-21swapper/008:30:170
134491390,4ptp4l0-21swapper/008:15:420
134491390,3ptp4l8135-21/usr/sbin/munin12:30:150
134491390,3ptp4l6775-21users11:15:270
134491390,3ptp4l3036-21hddtemp_smartct10:00:161
134491390,3ptp4l21727-21hddtemp_smartct10:40:161
134491390,3ptp4l21477-21iostat09:30:160
134491390,3ptp4l0-21swapper/010:15:290
134491380,5ptp4l0-21swapper/108:35:191
134491380,4ptp4l0-21swapper/211:15:082
134491380,4ptp4l0-21swapper/211:01:562
134491380,4ptp4l0-21swapper/210:56:062
134491380,4ptp4l0-21swapper/210:10:572
134491380,4ptp4l0-21swapper/207:45:222
134491380,4ptp4l0-21swapper/207:40:262
134491380,4ptp4l0-21swapper/112:03:281
134491380,4ptp4l0-21swapper/111:55:371
134491380,4ptp4l0-21swapper/109:02:161
134491380,4ptp4l0-21swapper/107:50:001
134491380,4ptp4l0-21swapper/107:50:001
134491380,4ptp4l0-21swapper/012:35:160
134491380,4ptp4l0-21swapper/011:20:240
134491380,3ptp4l0-21swapper/208:25:292
134491380,3ptp4l0-21swapper/208:25:292
134491380,3ptp4l0-21swapper/111:10:191
134491370,4ptp4l0-21swapper/109:10:251
134491370,3ptp4l0-21swapper/211:10:302
134491370,3ptp4l0-21swapper/108:45:021
190182214,9sleep219096-21ls07:05:272
171282165,6sleep30-21swapper/307:05:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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