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2026-09-03 - 01:03
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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 Wed Sep 02, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17230997715,60cyclictest0-21swapper/209:00:292
134491770,4ptp4l0-21swapper/109:55:241
134491710,10ptp4l15105-21df07:05:130
1723099690,29cyclictest17742-21taskset10:37:352
1723099680,31cyclictest19253-21chrt07:14:242
1723099680,30cyclictest6336-21taskset12:30:332
1723099680,30cyclictest18176-21taskset11:48:192
1723099680,28cyclictest5806-21latency_hist07:55:012
1723099677,20cyclictest22550-21basename07:20:172
1723099670,31cyclictest8394-21chrt10:18:372
1723099670,30cyclictest20029-21taskset10:42:122
1723099660,31cyclictest4162-21chrt12:27:112
1723099660,31cyclictest26291-21taskset08:39:092
1723099660,31cyclictest10621-21chrt11:30:312
1723099660,30cyclictest8539-21chrt11:28:182
1723099660,30cyclictest21442-21chrt07:18:052
1723099660,29cyclictest26468-21chrt09:46:002
1723099660,29cyclictest1699-21taskset12:20:452
1723099651,30cyclictest6061-21chrt11:21:402
1723099651,30cyclictest6061-21chrt11:21:392
1723099651,28cyclictest12330-21taskset08:07:112
1723099650,36cyclictest7665-21taskset07:57:162
1723099650,32cyclictest21678-21chrt08:28:522
1723099650,31cyclictest30943-21chrt08:49:402
1723099650,30cyclictest28949-21chrt09:53:262
1723099650,21cyclictest22588-21/usr/sbin/munin08:30:182
1723099650,21cyclictest22588-21/usr/sbin/munin08:30:182
134491650,4ptp4l0-21swapper/008:15:240
134491650,3ptp4l16274-21wc11:45:111
1723099640,35cyclictest1467-21taskset10:04:342
1723099640,31cyclictest24435-21taskset09:44:202
1723099640,31cyclictest17469-21chrt09:28:392
1723099640,30cyclictest7998-21taskset09:09:212
1723099640,30cyclictest15540-21chrt10:33:542
1723099640,29cyclictest28445-21chrt07:31:292
1723099640,29cyclictest25075-21taskset10:55:042
1723099640,29cyclictest14990-21taskset09:21:252
134491640,4ptp4l0-21swapper/107:30:181
1723099631,30cyclictest13162-21chrt10:27:472
1723099630,32cyclictest1636-21chrt11:14:452
1723099630,31cyclictest21861-21chrt09:36:052
1723099630,30cyclictest31666-21taskset11:08:562
1723099630,30cyclictest28668-21taskset08:44:542
1723099630,30cyclictest25065-21chrt12:03:042
1723099630,30cyclictest22755-21taskset11:58:102
1723099630,30cyclictest19131-21chrt08:20:422
1723099630,29cyclictest31301-21taskset09:56:232
1723099630,29cyclictest3068-21chrt08:58:102
1723099630,29cyclictest27347-21taskset12:07:532
1723099630,29cyclictest10054-21taskset09:10:342
1723099630,28cyclictest14527-21chrt08:10:562
1723099620,31cyclictest5849-21taskset10:11:072
1723099620,30cyclictest20447-21chrt11:53:002
1723099620,29cyclictest19662-21taskset09:32:192
1723099620,29cyclictest19662-21taskset09:32:192
1723099620,28cyclictest8796-21chrt12:36:582
134491620,4ptp4l0-21swapper/109:20:001
134491620,3ptp4l19856-21/usr/sbin/munin07:15:130
1723099610,33cyclictest13226-21taskset11:39:262
1723099610,30cyclictest29792-21taskset12:14:432
1723099610,30cyclictest16959-21chrt08:17:372
1723099610,28cyclictest3669-21taskset10:07:392
134491610,5ptp4l0-21swapper/008:25:210
1723099600,30cyclictest3282-21taskset07:49:542
1723099590,30cyclictest15542-21taskset11:41:462
134491590,5ptp4l0-21swapper/207:06:482
134491590,4ptp4l0-21swapper/212:16:212
134491590,4ptp4l0-21swapper/111:40:231
134491590,3ptp4l19131-21iostat11:50:181
1723099580,28cyclictest591-21taskset08:52:042
134491580,4ptp4l0-21swapper/109:50:091
134491580,4ptp4l0-21swapper/108:30:141
134491580,4ptp4l0-21swapper/108:30:141
1723099572,22cyclictest0-21swapper/207:26:182
134491570,4ptp4l0-21swapper/110:05:381
134491570,4ptp4l0-21swapper/108:02:531
134491570,4ptp4l0-21swapper/107:14:031
1723099560,29cyclictest29444-21chrt11:04:472
134491560,4ptp4l0-21swapper/108:43:001
134491560,4ptp4l0-21swapper/008:04:100
134491560,3ptp4l0-21swapper/109:43:421
134491550,4ptp4l0-21swapper/111:30:541
134491550,4ptp4l0-21swapper/110:15:481
134491550,4ptp4l0-21swapper/107:53:261
134491550,3ptp4l0-21swapper/011:35:020
134491550,3ptp4l0-21swapper/008:20:180
134491550,13ptp4l9225-21/usr/sbin/munin10:20:171
134491540,4ptp4l0-21swapper/110:05:001
134491540,4ptp4l0-21swapper/009:53:590
134491540,4ptp4l0-21swapper/008:35:300
134491540,3ptp4l0-21swapper/109:31:281
134491540,3ptp4l0-21swapper/109:31:281
134491540,3ptp4l0-21swapper/108:17:481
134491530,4ptp4l0-21swapper/311:47:443
134491530,4ptp4l0-21swapper/310:59:273
134491530,4ptp4l0-21swapper/309:58:063
134491530,4ptp4l0-21swapper/308:40:243
134491530,4ptp4l0-21swapper/009:38:380
134491530,4ptp4l0-21swapper/009:02:340
134491530,3ptp4l0-21swapper/310:35:363
134491530,3ptp4l0-21swapper/112:15:581
134491520,4ptp4l0-21swapper/310:28:073
134491520,4ptp4l0-21swapper/309:41:073
134491520,4ptp4l0-21swapper/108:12:581
134491520,4ptp4l0-21swapper/011:13:530
134491520,4ptp4l0-21swapper/010:10:110
134491520,3ptp4l11097-21irqrtprio08:05:191
134491520,3ptp4l0-21swapper/011:43:580
134491520,12ptp4l0-21swapper/109:07:191
1723099510,30cyclictest24743-21chrt10:53:482
134491510,9ptp4l14895-21apt-get07:05:111
134491510,4ptp4l0-21swapper/112:28:561
134491510,4ptp4l0-21swapper/111:09:361
134491510,4ptp4l0-21swapper/110:30:351
134491510,4ptp4l0-21swapper/011:22:040
134491510,4ptp4l0-21swapper/011:22:040
134491510,3ptp4l0-21swapper/108:38:041
134491500,4ptp4l0-21swapper/111:00:301
134491500,4ptp4l0-21swapper/110:14:001
134491500,4ptp4l0-21swapper/107:40:351
134491500,4ptp4l0-21swapper/011:25:480
134491500,4ptp4l0-21swapper/009:34:570
134491500,4ptp4l0-21swapper/009:34:570
134491500,3ptp4l0-21swapper/109:37:171
134491490,4ptp4l0-21swapper/309:22:263
134491490,4ptp4l0-21swapper/307:37:543
134491490,4ptp4l0-21swapper/112:32:441
134491490,4ptp4l0-21swapper/111:20:461
134491490,4ptp4l0-21swapper/111:20:461
134491490,4ptp4l0-21swapper/109:26:041
134491490,3ptp4l0-21swapper/107:20:251
134491480,4ptp4l0-21swapper/112:05:491
134491480,4ptp4l0-21swapper/112:03:071
134491480,4ptp4l0-21swapper/108:22:541
134491480,4ptp4l0-21swapper/011:18:160
134491480,3ptp4l0-21swapper/111:55:231
134491480,2ptp4l12339-21strings10:25:220
1723099472,22cyclictest0-21swapper/207:38:162
134491470,4ptp4l0-21swapper/310:53:513
134491470,4ptp4l0-21swapper/110:55:371
134491470,4ptp4l0-21swapper/110:53:011
134491470,4ptp4l0-21swapper/107:55:521
134491470,4ptp4l0-21swapper/107:47:541
134491470,3ptp4l0-21swapper/007:27:440
17231994641,3cyclictest41-21ksoftirqd/311:39:593
134491460,4ptp4l0-21swapper/112:35:211
134491460,4ptp4l0-21swapper/111:28:211
134491460,4ptp4l0-21swapper/109:22:121
134491460,4ptp4l0-21swapper/108:58:531
134491460,3ptp4l0-21swapper/008:41:450
134491450,7ptp4l101ktimersoftd/007:55:250
134491450,4ptp4l0-21swapper/111:38:431
134491450,4ptp4l0-21swapper/012:39:470
134491450,4ptp4l0-21swapper/007:51:400
134491450,3ptp4l0-21swapper/111:10:381
134491440,4ptp4l0-21swapper/312:08:153
134491440,4ptp4l0-21swapper/112:14:201
134491440,4ptp4l0-21swapper/110:45:111
134491440,4ptp4l0-21swapper/110:45:111
134491440,4ptp4l0-21swapper/108:26:401
134491430,9ptp4l1301-21snmpd07:08:183
134491430,9ptp4l0-21swapper/209:15:212
134491430,4ptp4l0-21swapper/010:22:450
134491430,4ptp4l0-21swapper/007:34:330
134491420,5ptp4l0-21swapper/310:45:153
134491420,5ptp4l0-21swapper/310:45:153
134491420,4ptp4l0-21swapper/109:02:581
134491420,4ptp4l0-21swapper/010:34:270
134491420,3ptp4l1661-21users12:20:280
134491420,3ptp4l0-21swapper/108:50:221
17231994136,3cyclictest41-21ksoftirqd/311:25:013
17231994136,3cyclictest41-21ksoftirqd/311:25:013
17231994135,3cyclictest843-21latency_hist08:55:003
17231994135,3cyclictest41-21ksoftirqd/312:20:013
134491410,8ptp4l25-21ksoftirqd/111:17:021
134491410,6ptp4l8853-21cat11:30:013
134491410,5ptp4l0-21swapper/307:30:213
134491410,5ptp4l0-21swapper/012:15:190
134491410,4ptp4l9363-21hddtemp_smartct11:30:160
134491410,4ptp4l32408-21ntp_states07:40:240
134491410,4ptp4l0-21swapper/312:31:273
134491410,4ptp4l0-21swapper/312:26:133
134491410,4ptp4l0-21swapper/311:16:263
134491410,4ptp4l0-21swapper/309:34:503
134491410,4ptp4l0-21swapper/309:34:503
134491410,4ptp4l0-21swapper/307:59:123
134491410,4ptp4l0-21swapper/109:46:131
134491410,4ptp4l0-21swapper/109:14:551
134491410,4ptp4l0-21swapper/107:26:471
134491410,4ptp4l0-21swapper/010:50:130
134491410,4ptp4l0-21swapper/010:05:180
134491410,4ptp4l0-21swapper/009:12:260
134491410,4ptp4l0-21swapper/008:45:300
134491410,4ptp4l0-21swapper/008:10:140
134491410,14ptp4l0-21swapper/008:57:120
1722899400,4cyclictest137891phc2sys07:35:190
134491400,5ptp4l0-21swapper/310:40:113
134491400,5ptp4l0-21swapper/012:10:220
134491400,5ptp4l0-21swapper/011:55:130
134491400,4ptp4l25689-21meminfo09:45:210
134491400,4ptp4l22582-21iostat08:30:170
134491400,4ptp4l22582-21iostat08:30:160
134491400,4ptp4l16453-21iostat10:35:181
134491400,4ptp4l14444-21ps09:20:250
134491400,4ptp4l12252-21memory10:25:221
134491400,4ptp4l0-21swapper/310:31:443
134491400,4ptp4l0-21swapper/310:23:483
134491400,4ptp4l0-21swapper/107:19:091
134491400,4ptp4l0-21swapper/012:05:230
134491400,4ptp4l0-21swapper/012:00:160
134491400,4ptp4l0-21swapper/011:03:240
134491400,4ptp4l0-21swapper/010:40:280
134491400,4ptp4l0-21swapper/010:37:290
134491400,4ptp4l0-21swapper/010:16:270
134491400,4ptp4l0-21swapper/009:40:130
134491400,4ptp4l0-21swapper/009:28:330
134491400,4ptp4l0-21swapper/008:52:540
134491400,4ptp4l0-21swapper/007:22:560
134491400,3ptp4l32391-21apt-get12:20:121
134491400,3ptp4l2918-21iostat_ios12:25:170
134491400,3ptp4l11634-21ntp_states08:05:240
17231993934,3cyclictest41-21ksoftirqd/312:12:243
17231993933,3cyclictest41-21ksoftirqd/309:20:003
134491390,5ptp4l0-21swapper/108:45:251
134491390,5ptp4l0-21swapper/107:35:181
134491390,5ptp4l0-21swapper/011:45:100
134491390,5ptp4l0-21swapper/009:15:050
134491390,4ptp4l32491-21irqrtprio10:00:180
134491390,4ptp4l31220-21users09:55:300
134491390,4ptp4l0-21swapper/311:00:233
134491390,4ptp4l0-21swapper/309:10:173
134491390,4ptp4l0-21swapper/309:05:233
134491390,4ptp4l0-21swapper/308:35:263
134491390,4ptp4l0-21swapper/211:16:252
134491390,4ptp4l0-21swapper/210:48:352
134491390,4ptp4l0-21swapper/210:48:352
134491390,4ptp4l0-21swapper/207:43:162
134491390,4ptp4l0-21swapper/110:42:321
134491390,4ptp4l0-21swapper/012:31:390
134491390,4ptp4l0-21swapper/011:50:200
134491390,4ptp4l0-21swapper/010:58:540
134491390,4ptp4l0-21swapper/010:45:320
134491390,4ptp4l0-21swapper/010:45:320
134491390,4ptp4l0-21swapper/009:05:260
134491390,4ptp4l0-21swapper/007:49:500
134491390,4ptp4l0-21swapper/007:10:100
134491390,2ptp4l11556-21strings08:05:223
17231993833,3cyclictest41-21ksoftirqd/311:07:113
17231993832,3cyclictest41-21ksoftirqd/312:35:133
134491380,5ptp4l0-21swapper/312:22:193
134491380,4ptp4l0-21swapper/311:40:133
134491380,4ptp4l0-21swapper/311:10:463
134491380,4ptp4l0-21swapper/310:05:273
134491380,4ptp4l0-21swapper/310:00:153
134491380,4ptp4l0-21swapper/309:48:333
134491380,4ptp4l0-21swapper/309:38:223
134491380,4ptp4l0-21swapper/308:16:303
134491380,4ptp4l0-21swapper/307:41:093
134491380,4ptp4l0-21swapper/210:21:142
134491380,4ptp4l0-21swapper/208:01:102
134491380,3ptp4l3696-21acpi09:00:113
134491380,3ptp4l31054-21python11:05:250
17231993732,3cyclictest41-21ksoftirqd/307:50:003
17231993732,3cyclictest41-21ksoftirqd/307:25:183
134491370,4ptp4l0-21swapper/308:45:353
134491370,4ptp4l0-21swapper/308:03:163
134491370,4ptp4l0-21swapper/307:51:323
134491370,4ptp4l0-21swapper/307:15:473
134491370,3ptp4l0-21swapper/312:01:043
134491370,3ptp4l0-21swapper/311:51:073
134491370,3ptp4l0-21swapper/311:30:133
134491370,3ptp4l0-21swapper/309:25:213
134491370,3ptp4l0-21swapper/308:25:253
134491370,3ptp4l0-21swapper/308:12:023
134491370,3ptp4l0-21swapper/307:23:323
17231993631,3cyclictest41-21ksoftirqd/311:55:173
17231993630,3cyclictest41-21ksoftirqd/308:20:143
134491360,4ptp4l0-21swapper/310:16:473
134491360,4ptp4l0-21swapper/308:34:013
134491360,4ptp4l0-21swapper/308:34:013
134491360,3ptp4l0-21swapper/308:59:233
134491360,3ptp4l0-21swapper/307:10:333
17231993530,3cyclictest41-21ksoftirqd/309:50:183
134491350,3ptp4l0-21swapper/310:11:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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