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2026-08-17 - 19:47
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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 Mon Aug 17, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2266321760,5sleep21685399cyclictest07:20:262
134491920,3ptp4l5656-21chrt09:02:352
18992730,3sleep11906-21cpuspeed_turbos11:15:131
16854996456,5cyclictest32114-21latency_hist12:20:003
134491640,4ptp4l0-21swapper/109:45:211
1685499617,7cyclictest0-21swapper/308:00:233
134491610,4ptp4l2884-21ls10:05:232
134491600,4ptp4l20849-21users07:15:290
1685499587,7cyclictest0-21swapper/308:50:263
134491580,5ptp4l0-21swapper/207:06:162
134491580,3ptp4l33-21ksoftirqd/212:35:182
134491580,3ptp4l0-21swapper/207:35:412
1685499567,6cyclictest0-21swapper/310:21:543
1685499566,7cyclictest0-21swapper/307:20:173
1685499566,6cyclictest0-21swapper/311:25:233
1685499566,6cyclictest0-21swapper/311:25:233
134491560,3ptp4l0-21swapper/309:55:273
134491560,3ptp4l0-21swapper/109:09:181
134491560,14ptp4l0-21swapper/108:25:271
134491560,12ptp4l14521-21apt-get07:05:133
195692550,4sleep21685399cyclictest07:15:172
1685499558,6cyclictest0-21swapper/308:10:173
1685499557,5cyclictest0-21swapper/308:40:303
134491550,4ptp4l0-21swapper/108:17:291
134491550,3ptp4l0-21swapper/212:05:202
134491550,3ptp4l0-21swapper/211:22:462
134491550,3ptp4l0-21swapper/107:30:241
1685499549,7cyclictest0-21swapper/308:37:123
1685499547,6cyclictest0-21swapper/310:15:203
1685499546,10cyclictest0-21swapper/310:00:263
134491540,4ptp4l0-21swapper/110:42:161
134491540,4ptp4l0-21swapper/108:58:351
134491540,3ptp4l0-21swapper/010:55:220
134491540,12ptp4l0-21swapper/108:40:251
1685499537,7cyclictest0-21swapper/309:30:173
1685499535,15cyclictest22122-21cat09:40:003
134491530,4ptp4l0-21swapper/210:21:552
134491530,4ptp4l0-21swapper/208:40:592
134491530,4ptp4l0-21swapper/109:50:001
134491530,4ptp4l0-21swapper/109:49:591
134491530,4ptp4l0-21swapper/010:11:030
134491530,4ptp4l0-21swapper/008:36:350
134491530,3ptp4l0-21swapper/109:37:061
134491530,11ptp4l0-21swapper/011:27:400
134491530,11ptp4l0-21swapper/011:27:400
1685499527,6cyclictest0-21swapper/310:47:013
1685499527,6cyclictest0-21swapper/309:43:103
134491520,4ptp4l0-21swapper/011:30:240
134491520,4ptp4l0-21swapper/010:35:310
134491520,13ptp4l0-21swapper/110:07:541
1685499514,5cyclictest0-21swapper/308:20:013
134491510,5ptp4l29825-21date12:15:000
134491510,4ptp4l0-21swapper/210:45:522
134491510,4ptp4l0-21swapper/112:32:391
134491510,4ptp4l0-21swapper/110:30:371
134491510,4ptp4l0-21swapper/012:04:320
134491510,4ptp4l0-21swapper/008:20:150
134491510,3ptp4l0-21swapper/212:29:552
134491510,3ptp4l0-21swapper/208:21:342
1685499508,7cyclictest0-21swapper/312:10:163
1685499508,7cyclictest0-21swapper/312:05:233
1685499508,6cyclictest0-21swapper/311:05:183
1685499506,6cyclictest0-21swapper/307:30:243
134491500,4ptp4l0-21swapper/212:12:122
134491500,4ptp4l0-21swapper/210:29:122
134491500,4ptp4l0-21swapper/209:17:432
134491500,4ptp4l0-21swapper/208:28:052
134491500,4ptp4l0-21swapper/108:51:431
134491500,4ptp4l0-21swapper/108:38:251
134491500,3ptp4l2398-21gmain08:30:372
134491500,3ptp4l0-21swapper/107:52:591
134491500,17ptp4l9-21ksoftirqd/007:13:040
1685499498,7cyclictest0-21swapper/311:50:253
1685499490,14cyclictest448-21dbus-daemon07:10:263
134491490,4ptp4l0-21swapper/210:33:292
134491490,4ptp4l0-21swapper/209:25:392
134491490,4ptp4l0-21swapper/207:59:292
134491490,4ptp4l0-21swapper/111:34:261
134491490,4ptp4l0-21swapper/009:12:360
134491490,3ptp4l0-21swapper/110:24:521
134491490,12ptp4l0-21swapper/211:51:542
1685499488,6cyclictest0-21swapper/310:05:163
1685499485,2cyclictest134491ptp4l11:55:153
1685499485,2cyclictest134491ptp4l11:55:143
134491480,4ptp4l0-21swapper/209:12:172
134491480,4ptp4l0-21swapper/208:07:212
134491480,4ptp4l0-21swapper/110:53:591
134491480,4ptp4l0-21swapper/110:53:591
134491480,4ptp4l0-21swapper/108:46:501
134491480,4ptp4l0-21swapper/107:27:201
134491480,4ptp4l0-21swapper/107:23:281
134491480,4ptp4l0-21swapper/008:25:250
134491480,4ptp4l0-21swapper/008:12:270
134491480,12ptp4l0-21swapper/107:41:261
134491480,12ptp4l0-21swapper/107:41:261
1685499477,6cyclictest0-21swapper/310:32:173
1685499477,6cyclictest0-21swapper/307:35:173
1685499476,7cyclictest0-21swapper/312:30:143
1685499476,5cyclictest0-21swapper/309:05:163
1685499475,7cyclictest0-21swapper/311:00:153
1685499472,5cyclictest0-21swapper/308:29:403
134491470,5ptp4l0-21swapper/210:39:052
134491470,3ptp4l0-21swapper/209:06:532
134491470,3ptp4l0-21swapper/208:39:152
134491470,3ptp4l0-21swapper/009:20:230
1685499466,6cyclictest0-21swapper/309:15:283
1685499466,12cyclictest0-21swapper/309:25:253
1685499465,7cyclictest0-21swapper/311:10:173
1685499465,7cyclictest0-21swapper/308:45:233
1685499464,6cyclictest0-21swapper/310:55:113
1685499460,13cyclictest25382-21systemctl07:25:253
134491460,4ptp4l0-21swapper/211:39:282
134491460,4ptp4l0-21swapper/209:30:062
134491460,4ptp4l0-21swapper/111:56:571
134491460,4ptp4l0-21swapper/111:56:571
134491460,3ptp4l0-21swapper/108:03:551
1685499456,2cyclictest121rcu_preempt11:30:163
1685499456,12cyclictest0-21swapper/311:20:183
1685499452,5cyclictest0-21swapper/311:42:503
134491450,9ptp4l0-21swapper/011:55:510
134491450,9ptp4l0-21swapper/011:55:510
134491450,4ptp4l26839-21apt-get09:50:033
134491450,4ptp4l26839-21apt-get09:50:023
134491450,4ptp4l0-21swapper/108:31:311
1685499447,7cyclictest0-21swapper/308:55:273
1685499447,6cyclictest0-21swapper/308:05:293
1685499447,6cyclictest0-21swapper/307:40:233
1685499447,6cyclictest0-21swapper/307:40:233
16854994436,5cyclictest23426-21irqrtprio12:00:203
1685499441,17cyclictest20293-21ntp_states07:15:233
134491440,9ptp4l0-21swapper/010:22:590
134491440,9ptp4l0-21swapper/009:46:420
134491440,9ptp4l0-21swapper/008:15:450
134491440,4ptp4l24202-21ls10:50:290
134491440,4ptp4l24202-21ls10:50:290
134491440,4ptp4l0-21swapper/112:19:031
134491440,4ptp4l0-21swapper/011:23:460
134491440,4ptp4l0-21swapper/007:36:440
1685499436,6cyclictest0-21swapper/312:25:203
1685499436,6cyclictest0-21swapper/311:46:473
134491430,9ptp4l0-21swapper/210:54:392
134491430,9ptp4l0-21swapper/210:54:392
134491430,9ptp4l0-21swapper/009:25:110
134491430,4ptp4l0-21swapper/208:14:412
134491430,3ptp4l1419-21apt-get08:55:122
134491430,11ptp4l33-21ksoftirqd/209:42:392
1685499428,6cyclictest0-21swapper/312:35:273
1685499427,6cyclictest0-21swapper/309:13:023
1685499426,6cyclictest0-21swapper/307:53:543
1685499421,5cyclictest41-21ksoftirqd/310:39:143
134491420,9ptp4l0-21swapper/209:20:022
134491420,9ptp4l0-21swapper/012:39:290
134491420,9ptp4l0-21swapper/011:15:500
134491420,8ptp4l0-21swapper/012:30:430
134491420,5ptp4l24064-21apt-get07:25:132
134491420,4ptp4l32212-21df_inode10:00:152
134491420,4ptp4l30914-21users08:45:300
134491420,3ptp4l0-21swapper/111:05:421
134491420,10ptp4l0-21swapper/009:51:190
134491420,10ptp4l0-21swapper/009:51:190
1685499415,6cyclictest0-21swapper/310:11:353
16853994135,4cyclictest33-21ksoftirqd/211:26:132
16853994135,4cyclictest33-21ksoftirqd/211:26:132
16853994126,13cyclictest33-21ksoftirqd/211:20:002
134491410,9ptp4l25-21ksoftirqd/110:55:231
134491410,9ptp4l0-21swapper/210:15:272
134491410,9ptp4l0-21swapper/011:04:080
134491410,9ptp4l0-21swapper/008:31:100
134491410,5ptp4l16784-21memory11:45:221
134491410,5ptp4l0-21swapper/208:50:232
134491410,5ptp4l0-21swapper/107:47:391
134491410,4ptp4l8479-21hddtemp_smartct08:00:170
134491410,4ptp4l28762-21ntp_states12:10:231
134491410,4ptp4l2521-21df_inode12:25:150
134491410,4ptp4l24364-21ls12:00:291
134491410,4ptp4l20424-21apt-get11:55:112
134491410,4ptp4l20424-21apt-get11:55:112
134491410,4ptp4l13934-21iostat10:30:200
134491410,4ptp4l0-21swapper/211:05:442
134491410,4ptp4l0-21swapper/207:10:582
134491410,4ptp4l0-21swapper/107:58:201
134491410,4ptp4l0-21swapper/107:35:191
134491410,4ptp4l0-21swapper/007:57:540
134491410,4ptp4l0-21swapper/007:20:240
134491410,3ptp4l3802-21apt-get09:00:113
134491410,3ptp4l26575-21apt-get07:30:122
1685499408,7cyclictest0-21swapper/308:15:163
134491400,6ptp4l0-21swapper/209:50:012
134491400,6ptp4l0-21swapper/209:50:012
134491400,5ptp4l0-21swapper/312:20:283
134491400,5ptp4l0-21swapper/207:50:152
134491400,5ptp4l0-21swapper/109:00:201
134491400,4ptp4l606-21ps11:10:261
134491400,4ptp4l30321-21/usr/sbin/munin08:45:232
134491400,4ptp4l27549-21diskstats11:00:151
134491400,4ptp4l2246-21hddtemp_smartct10:05:170
134491400,4ptp4l18593-21ntp_states08:20:251
134491400,4ptp4l16228-21iostat10:35:181
134491400,4ptp4l0-21swapper/208:15:202
134491400,4ptp4l0-21swapper/208:02:592
134491400,4ptp4l0-21swapper/112:20:121
134491400,4ptp4l0-21swapper/110:04:161
134491400,4ptp4l0-21swapper/109:25:201
134491400,4ptp4l0-21swapper/108:05:131
134491400,4ptp4l0-21swapper/011:12:420
134491400,4ptp4l0-21swapper/010:19:580
134491400,4ptp4l0-21swapper/010:00:350
134491400,4ptp4l0-21swapper/009:36:140
134491400,4ptp4l0-21swapper/009:01:470
134491400,4ptp4l0-21swapper/008:58:450
134491400,4ptp4l0-21swapper/008:40:370
134491400,4ptp4l0-21swapper/008:05:430
134491400,4ptp4l0-21swapper/007:50:160
134491400,4ptp4l0-21swapper/007:44:280
134491400,4ptp4l0-21swapper/007:44:280
134491400,4ptp4l0-21swapper/007:34:580
134491400,3ptp4l77850irq/145-enp4s0-09:55:262
134491400,3ptp4l5114-21meminfo10:10:232
134491400,3ptp4l13006-21apt-get09:20:111
134491400,3ptp4l0-21swapper/007:45:190
1685499392,29cyclictest0-21swapper/311:16:253
1685499391,5cyclictest41-21ksoftirqd/308:30:163
134491390,5ptp4l0-21swapper/112:25:221
134491390,5ptp4l0-21swapper/011:51:560
134491390,5ptp4l0-21swapper/009:57:030
134491390,5ptp4l0-21swapper/008:50:250
134491390,5ptp4l0-21swapper/007:25:040
134491390,4ptp4l7630-21/usr/sbin/munin10:15:221
134491390,4ptp4l26515-21ls12:05:271
134491390,4ptp4l22440-21apt-get09:40:150
134491390,4ptp4l17990-21apt-get10:40:143
134491390,4ptp4l0-21swapper/307:57:053
134491390,4ptp4l0-21swapper/212:21:332
134491390,4ptp4l0-21swapper/212:15:212
134491390,4ptp4l0-21swapper/212:01:582
134491390,4ptp4l0-21swapper/211:45:382
134491390,4ptp4l0-21swapper/211:40:462
134491390,4ptp4l0-21swapper/211:33:432
134491390,4ptp4l0-21swapper/211:14:482
134491390,4ptp4l0-21swapper/210:42:432
134491390,4ptp4l0-21swapper/209:35:212
134491390,4ptp4l0-21swapper/207:48:232
134491390,4ptp4l0-21swapper/111:40:131
134491390,4ptp4l0-21swapper/111:35:191
134491390,4ptp4l0-21swapper/110:10:281
134491390,4ptp4l0-21swapper/107:19:291
134491390,4ptp4l0-21swapper/012:21:590
134491390,4ptp4l0-21swapper/011:46:550
134491390,4ptp4l0-21swapper/011:40:220
134491390,4ptp4l0-21swapper/010:45:200
134491390,4ptp4l0-21swapper/010:40:450
134491390,4ptp4l0-21swapper/010:25:320
134491390,4ptp4l0-21swapper/009:31:490
134491390,4ptp4l0-21swapper/009:05:220
134491390,3ptp4l6597-21apt-get11:25:041
134491390,3ptp4l6597-21apt-get11:25:041
134491390,3ptp4l4417-21diskstats11:20:141
134491390,3ptp4l31187-21apt-get07:40:132
134491390,3ptp4l31187-21apt-get07:40:132
134491390,3ptp4l29754-21df11:05:150
134491390,3ptp4l26214-21/usr/sbin/munin12:05:240
1685499381,8cyclictest2318-21gnome-shell07:47:583
1685499380,6cyclictest11650-21hwlatdetect11:35:163
134491380,5ptp4l0-21swapper/112:35:261
134491380,4ptp4l0-21swapper/310:50:263
134491380,4ptp4l0-21swapper/310:50:263
134491380,4ptp4l0-21swapper/211:03:582
134491380,4ptp4l0-21swapper/210:55:552
134491380,4ptp4l0-21swapper/209:49:242
134491380,4ptp4l0-21swapper/110:25:031
134491380,4ptp4l0-21swapper/109:40:171
134491380,4ptp4l0-21swapper/109:33:181
134491380,4ptp4l0-21swapper/107:14:531
134491380,4ptp4l0-21swapper/012:15:050
134491380,4ptp4l0-21swapper/011:35:170
134491380,4ptp4l0-21swapper/009:15:550
134491380,3ptp4l5367-21kernelversion12:30:182
134491380,3ptp4l0-21swapper/108:10:251
134491370,4ptp4l0-21swapper/110:45:131
134491370,3ptp4l9506-21awk09:10:241
134491370,3ptp4l0-21swapper/309:45:143
134491370,3ptp4l0-21swapper/111:50:341
1685499360,5cyclictest0-21swapper/310:25:073
134491360,3ptp4l0-21swapper/109:15:161
1685499340,11cyclictest41-21ksoftirqd/309:23:303
134491340,3ptp4l0-21swapper/109:57:361
46198300,24rtkit-daemon23507-21apache207:09:171
1639721814,2sleep00-21swapper/007:08:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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