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2026-09-07 - 01:57
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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 rackdslot1.osadl.org (updated Sun Sep 06, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311021560,6sleep02216699cyclictest12:15:190
2145121530,6sleep22216899cyclictest08:15:282
1174021420,6sleep12216799cyclictest12:35:181
1174021420,6sleep12216799cyclictest12:35:181
134491710,3ptp4l22309-21apt-get09:30:123
307712700,5sleep10-21swapper/109:45:241
22168996933,4cyclictest33-21ksoftirqd/207:40:282
22168996533,9cyclictest33-21ksoftirqd/210:50:012
22168996425,6cyclictest33-21ksoftirqd/211:00:282
2216899642,34cyclictest0-21swapper/212:39:562
2216899642,34cyclictest0-21swapper/212:39:562
2216899642,34cyclictest0-21swapper/208:20:102
2216899642,33cyclictest0-21swapper/210:04:362
134491640,4ptp4l0-21swapper/010:19:090
22168996331,4cyclictest33-21ksoftirqd/209:45:202
22168996331,10cyclictest33-21ksoftirqd/207:25:012
2216899632,34cyclictest0-21swapper/211:45:232
2216899632,34cyclictest0-21swapper/211:43:092
2216899632,32cyclictest0-21swapper/207:55:162
22168996231,5cyclictest33-21ksoftirqd/208:00:242
22168996229,4cyclictest33-21ksoftirqd/209:10:262
22168996226,8cyclictest33-21ksoftirqd/210:30:282
22168996224,4cyclictest33-21ksoftirqd/211:25:222
22168996224,4cyclictest33-21ksoftirqd/211:25:222
22168996223,7cyclictest33-21ksoftirqd/207:46:012
2216899622,31cyclictest0-21swapper/209:55:222
22168996129,6cyclictest33-21ksoftirqd/207:30:132
22168996129,6cyclictest33-21ksoftirqd/207:30:132
2216899612,33cyclictest0-21swapper/208:50:232
22168996029,6cyclictest33-21ksoftirqd/208:40:192
22168996025,3cyclictest33-21ksoftirqd/209:15:152
2216899602,31cyclictest0-21swapper/210:20:142
22168996022,10cyclictest33-21ksoftirqd/212:15:242
22168995926,6cyclictest33-21ksoftirqd/211:35:212
22168995925,6cyclictest33-21ksoftirqd/207:15:272
22168995925,3cyclictest33-21ksoftirqd/210:39:292
22168995924,5cyclictest33-21ksoftirqd/210:55:162
2216899592,32cyclictest0-21swapper/207:10:092
22168995829,6cyclictest33-21ksoftirqd/211:15:152
22168995826,7cyclictest33-21ksoftirqd/207:25:242
22168995821,5cyclictest33-21ksoftirqd/211:20:172
2216899580,5cyclictest33-21ksoftirqd/209:55:012
134491580,4ptp4l0-21swapper/207:50:152
2216899572,37cyclictest0-21swapper/212:10:152
134491570,4ptp4l0-21swapper/007:41:450
134491570,3ptp4l0-21swapper/309:15:253
134491570,3ptp4l0-21swapper/210:25:202
134491570,16ptp4l0-21swapper/311:15:213
2216899562,35cyclictest0-21swapper/210:40:152
2216899562,22cyclictest0-21swapper/212:01:252
134491560,4ptp4l0-21swapper/107:24:291
22168995527,7cyclictest33-21ksoftirqd/211:50:132
22168995521,4cyclictest33-21ksoftirqd/211:55:272
2216899545,6cyclictest33-21ksoftirqd/209:40:002
2216899543,9cyclictest33-21ksoftirqd/209:25:142
134491540,19ptp4l0-21swapper/011:58:280
2216899533,6cyclictest33-21ksoftirqd/208:10:152
22168995321,7cyclictest33-21ksoftirqd/210:10:032
22168995321,7cyclictest33-21ksoftirqd/210:10:032
134491530,4ptp4l0-21swapper/310:45:353
134491530,4ptp4l0-21swapper/108:13:391
134491530,4ptp4l0-21swapper/009:22:220
2216899526,7cyclictest33-21ksoftirqd/208:55:182
2216899525,11cyclictest33-21ksoftirqd/211:05:212
2216899522,6cyclictest33-21ksoftirqd/212:30:002
134491520,5ptp4l0-21swapper/207:09:302
134491520,4ptp4l0-21swapper/310:04:293
134491520,13ptp4l20265-21hddtemp_smartct07:05:151
2216899513,7cyclictest0-21swapper/209:40:132
2216899512,8cyclictest0-21swapper/209:05:142
22168995117,7cyclictest33-21ksoftirqd/212:22:502
2216899505,3cyclictest33-21ksoftirqd/211:10:222
2216899504,3cyclictest33-21ksoftirqd/210:15:212
134491500,4ptp4l0-21swapper/311:50:563
134491500,4ptp4l0-21swapper/310:24:303
134491500,4ptp4l0-21swapper/308:20:013
134491500,4ptp4l0-21swapper/210:05:592
134491500,4ptp4l0-21swapper/011:43:250
134491500,4ptp4l0-21swapper/008:41:040
134491500,4ptp4l0-21swapper/008:30:540
134491500,10ptp4l20947-21ntp_states07:05:213
2216899494,4cyclictest33-21ksoftirqd/208:30:132
2216899493,2cyclictest121rcu_preempt11:33:322
2216899493,2cyclictest121rcu_preempt11:33:322
2216899492,6cyclictest0-21swapper/209:30:272
2216899492,5cyclictest33-21ksoftirqd/212:05:232
2216899491,7cyclictest0-21swapper/210:50:152
134491490,4ptp4l0-21swapper/309:01:273
134491490,4ptp4l0-21swapper/308:09:583
134491490,4ptp4l0-21swapper/307:59:513
134491490,4ptp4l0-21swapper/107:31:321
134491490,4ptp4l0-21swapper/107:31:311
134491490,4ptp4l0-21swapper/010:07:190
2216899485,8cyclictest33-21ksoftirqd/208:05:172
22168994839,3cyclictest33-21ksoftirqd/209:05:002
2216899482,30cyclictest0-21swapper/208:35:172
134491480,4ptp4l0-21swapper/308:43:443
134491480,4ptp4l0-21swapper/010:03:280
134491480,4ptp4l0-21swapper/009:50:060
134491480,3ptp4l0-21swapper/308:36:563
134491480,3ptp4l0-21swapper/111:00:001
134491480,3ptp4l0-21swapper/109:05:341
134491470,4ptp4l0-21swapper/311:11:333
2216899461,8cyclictest33-21ksoftirqd/209:20:142
2216899460,5cyclictest1767-21idleruntime07:35:162
134491460,4ptp4l0-21swapper/312:20:143
134491460,3ptp4l0-21swapper/312:38:143
134491460,3ptp4l0-21swapper/312:38:143
134491450,4ptp4l20746-21apt-get11:45:113
134491450,12ptp4l0-21swapper/309:55:173
2216899444,3cyclictest121rcu_preempt12:30:272
22168994440,2cyclictest321ktimersoftd/208:45:222
2216899442,3cyclictest121rcu_preempt08:29:462
134491440,4ptp4l0-21swapper/309:40:343
134491440,4ptp4l0-21swapper/010:35:040
134491440,3ptp4l32110-21apt-get11:00:133
134491440,3ptp4l0-21swapper/311:40:463
134491440,3ptp4l0-21swapper/310:56:003
134491430,5ptp4l0-21swapper/312:18:293
134491430,4ptp4l29116-21apt-get07:25:123
134491430,4ptp4l1471-21apt-get08:45:120
134491430,3ptp4l0-21swapper/109:56:411
134491420,5ptp4l0-21swapper/010:55:170
134491420,5ptp4l0-21swapper/008:25:220
134491420,4ptp4l4211-21apt-get10:00:131
134491420,4ptp4l362-21iostat12:10:183
134491420,4ptp4l25167-21iostat09:35:190
134491420,4ptp4l16899-21ls09:15:271
134491420,4ptp4l0-21swapper/309:06:563
134491420,3ptp4l27132-21apt-get09:40:120
134491420,3ptp4l11107-21apt-get10:15:123
134491420,2ptp4l0-21swapper/308:34:333
134491410,9ptp4l0-21swapper/312:25:163
134491410,5ptp4l0-21swapper/312:05:113
134491410,5ptp4l0-21swapper/312:00:283
134491410,5ptp4l0-21swapper/308:55:253
134491410,5ptp4l0-21swapper/012:25:250
134491410,5ptp4l0-21swapper/011:25:240
134491410,5ptp4l0-21swapper/011:25:240
134491410,4ptp4l9392-21ntp_states07:50:233
134491410,4ptp4l4778-21meminfo08:50:190
134491410,4ptp4l26108-21ntp_states10:45:240
134491410,4ptp4l21506-21users08:15:271
134491410,4ptp4l0-21swapper/311:37:333
134491410,4ptp4l0-21swapper/310:05:233
134491410,4ptp4l0-21swapper/008:10:220
134491410,4ptp4l0-21swapper/007:24:100
134491410,3ptp4l9925-21ntp_states10:10:240
134491410,3ptp4l9925-21ntp_states10:10:240
134491410,3ptp4l7770-21ntp_states11:15:220
134491410,3ptp4l41-21ksoftirqd/308:00:143
134491410,3ptp4l32351-21ls07:30:193
134491410,3ptp4l32351-21ls07:30:193
134491410,3ptp4l23540-21irqstats10:40:203
134491410,3ptp4l22175-21ls11:45:251
134491410,3ptp4l1782-21df_inode08:45:151
134491410,3ptp4l15137-21ls11:30:270
134491410,3ptp4l15137-21ls11:30:270
22167994035,3cyclictest25-21ksoftirqd/108:05:001
134491400,6ptp4l0-21swapper/309:12:173
134491400,5ptp4l2216999cyclictest07:45:193
134491400,5ptp4l0-21swapper/312:32:113
134491400,5ptp4l0-21swapper/311:55:153
134491400,5ptp4l0-21swapper/310:50:153
134491400,5ptp4l0-21swapper/310:25:233
134491400,5ptp4l0-21swapper/108:40:011
134491400,5ptp4l0-21swapper/012:35:210
134491400,5ptp4l0-21swapper/012:35:210
134491400,5ptp4l0-21swapper/009:45:040
134491400,5ptp4l0-21swapper/009:05:150
134491400,4ptp4l21115-21ntp_states09:25:201
134491400,4ptp4l0-21swapper/311:25:133
134491400,4ptp4l0-21swapper/311:25:133
134491400,4ptp4l0-21swapper/311:20:283
134491400,4ptp4l0-21swapper/310:38:503
134491400,4ptp4l0-21swapper/310:11:043
134491400,4ptp4l0-21swapper/310:11:033
134491400,4ptp4l0-21swapper/309:35:143
134491400,4ptp4l0-21swapper/308:50:283
134491400,4ptp4l0-21swapper/308:47:593
134491400,4ptp4l0-21swapper/308:26:473
134491400,4ptp4l0-21swapper/108:20:101
134491400,4ptp4l0-21swapper/012:20:180
134491400,4ptp4l0-21swapper/011:50:190
134491400,4ptp4l0-21swapper/011:23:510
134491400,4ptp4l0-21swapper/011:05:060
134491400,4ptp4l0-21swapper/011:02:080
134491400,4ptp4l0-21swapper/010:28:200
134491400,4ptp4l0-21swapper/009:30:150
134491400,4ptp4l0-21swapper/009:18:060
134491400,4ptp4l0-21swapper/009:01:340
134491400,4ptp4l0-21swapper/008:35:580
134491400,4ptp4l0-21swapper/007:59:440
134491400,4ptp4l0-21swapper/007:55:000
134491400,4ptp4l0-21swapper/007:26:300
134491400,3ptp4l30583-21ls09:45:203
134491400,3ptp4l2017-21apt-get11:05:123
134491400,3ptp4l18015-21apt-get10:30:113
134491400,3ptp4l0-21swapper/309:20:253
134491400,3ptp4l0-21swapper/308:12:563
134491400,3ptp4l0-21swapper/110:14:241
134491400,3ptp4l0-21swapper/110:14:231
134491390,5ptp4l2216699cyclictest12:00:270
134491390,5ptp4l0-21swapper/110:25:221
134491390,5ptp4l0-21swapper/110:05:161
134491390,5ptp4l0-21swapper/010:23:060
134491390,4ptp4l18657-21irqrtprio10:30:190
134491390,4ptp4l0-21swapper/309:53:163
134491390,4ptp4l0-21swapper/308:15:233
134491390,4ptp4l0-21swapper/307:40:473
134491390,4ptp4l0-21swapper/307:15:193
134491390,4ptp4l0-21swapper/112:08:591
134491390,4ptp4l0-21swapper/111:36:331
134491390,4ptp4l0-21swapper/111:16:231
134491390,4ptp4l0-21swapper/110:52:201
134491390,4ptp4l0-21swapper/110:45:261
134491390,4ptp4l0-21swapper/110:44:451
134491390,4ptp4l0-21swapper/109:43:201
134491390,4ptp4l0-21swapper/109:35:261
134491390,4ptp4l0-21swapper/109:00:251
134491390,4ptp4l0-21swapper/108:54:541
134491390,4ptp4l0-21swapper/108:25:171
134491390,4ptp4l0-21swapper/107:25:111
134491390,4ptp4l0-21swapper/012:34:510
134491390,4ptp4l0-21swapper/012:10:050
134491390,4ptp4l0-21swapper/012:05:530
134491390,4ptp4l0-21swapper/011:47:230
134491390,4ptp4l0-21swapper/011:37:140
134491390,4ptp4l0-21swapper/010:50:180
134491390,4ptp4l0-21swapper/009:56:290
134491390,4ptp4l0-21swapper/009:25:320
134491390,4ptp4l0-21swapper/009:11:490
134491390,4ptp4l0-21swapper/008:58:210
134491390,4ptp4l0-21swapper/008:20:030
134491390,4ptp4l0-21swapper/008:16:580
134491390,4ptp4l0-21swapper/008:05:540
134491390,4ptp4l0-21swapper/008:00:060
134491390,4ptp4l0-21swapper/007:45:090
134491390,4ptp4l0-21swapper/007:38:170
134491390,4ptp4l0-21swapper/007:31:280
134491390,4ptp4l0-21swapper/007:31:280
134491390,3ptp4l0-21swapper/107:59:561
134491390,3ptp4l0-21swapper/007:10:390
134491390,2ptp4l18954-21ls10:30:201
134491380,4ptp4l20585-21irqrtprio09:25:173
134491380,4ptp4l1912-21irqrtprio07:35:203
134491380,4ptp4l13493-21grep09:10:181
134491380,4ptp4l0-21swapper/311:33:423
134491380,4ptp4l0-21swapper/311:33:423
134491380,4ptp4l0-21swapper/307:20:183
134491380,4ptp4l0-21swapper/307:12:013
134491380,4ptp4l0-21swapper/112:34:141
134491380,4ptp4l0-21swapper/112:24:541
134491380,4ptp4l0-21swapper/112:17:331
134491380,4ptp4l0-21swapper/112:14:321
134491380,4ptp4l0-21swapper/112:00:511
134491380,4ptp4l0-21swapper/111:57:261
134491380,4ptp4l0-21swapper/111:06:241
134491380,4ptp4l0-21swapper/111:02:191
134491380,4ptp4l0-21swapper/110:17:471
134491380,4ptp4l0-21swapper/108:30:501
134491380,4ptp4l0-21swapper/108:06:251
134491380,4ptp4l0-21swapper/107:45:121
134491380,4ptp4l0-21swapper/011:12:380
134491380,4ptp4l0-21swapper/007:15:210
134491380,4ptp4l0-21swapper/007:05:130
134491380,3ptp4l0-21swapper/111:40:491
134491380,3ptp4l0-21swapper/111:25:211
134491380,3ptp4l0-21swapper/111:25:211
134491380,3ptp4l0-21swapper/111:23:161
134491380,3ptp4l0-21swapper/110:35:291
134491380,3ptp4l0-21swapper/109:53:141
134491380,3ptp4l0-21swapper/109:20:391
134491380,3ptp4l0-21swapper/108:55:091
134491380,3ptp4l0-21swapper/108:37:561
134491380,3ptp4l0-21swapper/107:52:071
134491380,3ptp4l0-21swapper/107:40:591
134491380,3ptp4l0-21swapper/010:40:220
134491370,3ptp4l0-21swapper/112:25:441
134491370,3ptp4l0-21swapper/111:50:531
134491370,3ptp4l0-21swapper/111:32:591
134491370,3ptp4l0-21swapper/111:32:591
134491370,3ptp4l0-21swapper/111:12:591
134491370,3ptp4l0-21swapper/110:20:331
134491370,3ptp4l0-21swapper/109:30:201
134491370,3ptp4l0-21swapper/107:17:421
134491360,3ptp4l0-21swapper/107:38:191
134491360,3ptp4l0-21swapper/107:10:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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