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2026-04-06 - 00:35
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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 Apr 05, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2043421770,5sleep2523999cyclictest08:50:182
133432720,7sleep313347-21irqrtprio08:35:193
523999652,61cyclictest0-21swapper/212:20:292
523999620,58cyclictest7937-21chrt08:25:062
288352610,4sleep30-21swapper/309:10:003
134491610,4ptp4l0-21swapper/012:35:230
134491600,4ptp4l0-21swapper/109:20:071
134491600,3ptp4l22587-21iostat08:55:180
134491600,3ptp4l0-21swapper/209:35:012
523999590,11cyclictest5718-21chrt10:37:092
523999580,15cyclictest4622-21ntp_states09:25:232
134491580,4ptp4l0-21swapper/108:13:591
523999573,11cyclictest0-21swapper/207:45:262
523999570,54cyclictest2975-21latency_hist08:15:002
523999570,12cyclictest26518-21taskset10:14:232
134491570,4ptp4l0-21swapper/109:35:281
134491570,3ptp4l27204-21meminfo07:55:210
134491570,3ptp4l0-21swapper/108:35:221
134491570,3ptp4l0-21swapper/108:16:571
134491570,3ptp4l0-21swapper/008:10:170
523999563,50cyclictest6821-21irqrtprio10:40:192
523999560,12cyclictest24245-21taskset12:28:252
523999560,11cyclictest701-21chrt09:18:232
134491560,4ptp4l0-21swapper/011:38:400
134491560,4ptp4l0-21swapper/009:53:000
134491560,3ptp4l0-21swapper/107:13:501
134491560,3ptp4l0-21swapper/012:00:240
523999550,12cyclictest19576-21chrt12:17:432
523999550,12cyclictest19576-21chrt12:17:422
523999550,12cyclictest16868-21chrt08:41:512
523999550,11cyclictest28805-21date09:10:012
523999550,11cyclictest12755-21chrt10:53:462
134491550,4ptp4l0-21swapper/008:08:380
134491550,3ptp4l0-21swapper/211:11:252
134491550,3ptp4l0-21swapper/012:30:290
134491550,3ptp4l0-21swapper/007:50:190
523999541,51cyclictest0-21swapper/211:45:292
523999540,50cyclictest18738-21which08:45:242
523999540,17cyclictest10392-21chrt11:58:462
523999540,11cyclictest28633-21seq12:35:502
523999540,11cyclictest10411-21chrt10:48:082
523999540,10cyclictest21580-21latency_hist07:45:002
134491540,4ptp4l0-21swapper/310:57:063
134491540,4ptp4l0-21swapper/207:07:382
134491540,4ptp4l0-21swapper/111:00:491
134491540,4ptp4l0-21swapper/111:00:491
134491540,4ptp4l0-21swapper/109:05:531
134491540,4ptp4l0-21swapper/108:05:441
134491540,4ptp4l0-21swapper/011:59:170
134491540,3ptp4l0-21swapper/310:39:203
134491540,3ptp4l0-21swapper/112:17:131
134491540,3ptp4l0-21swapper/112:17:131
134491540,3ptp4l0-21swapper/110:00:401
134491540,3ptp4l0-21swapper/007:35:210
134491540,2ptp4l0-21swapper/309:50:233
523999530,10cyclictest16727-21chrt09:50:552
5238995325,6cyclictest25-21ksoftirqd/111:55:221
5238995321,8cyclictest25-21ksoftirqd/109:05:001
134491530,4ptp4l0-21swapper/311:17:503
134491530,4ptp4l0-21swapper/107:46:031
134491530,4ptp4l0-21swapper/008:16:010
523999523,10cyclictest0-21swapper/212:04:212
5238995221,4cyclictest25-21ksoftirqd/110:08:431
134491520,4ptp4l0-21swapper/110:55:481
134491520,4ptp4l0-21swapper/108:00:301
134491520,4ptp4l0-21swapper/011:07:100
134491520,4ptp4l0-21swapper/008:30:090
5238995122,4cyclictest25-21ksoftirqd/109:00:001
5238995121,4cyclictest25-21ksoftirqd/110:51:041
5238995116,3cyclictest25-21ksoftirqd/112:11:431
134491510,4ptp4l524099cyclictest12:12:503
134491510,4ptp4l0-21swapper/112:27:331
134491510,4ptp4l0-21swapper/109:45:121
134491510,4ptp4l0-21swapper/009:05:260
134491510,3ptp4l0-21swapper/311:56:243
134491510,3ptp4l0-21swapper/011:49:230
523999500,9cyclictest29270-21/usr/sbin/munin11:30:242
523999500,46cyclictest18483-21awk09:55:222
5238995024,6cyclictest25-21ksoftirqd/107:15:221
5238995022,4cyclictest25-21ksoftirqd/110:12:191
5238995021,8cyclictest25-21ksoftirqd/108:35:011
307692500,5sleep00-21swapper/010:20:270
134491500,4ptp4l0-21swapper/311:08:233
134491500,4ptp4l0-21swapper/109:58:061
134491500,4ptp4l0-21swapper/109:51:341
134491500,4ptp4l0-21swapper/109:40:101
134491500,4ptp4l0-21swapper/108:40:451
134491500,12ptp4l0-21swapper/308:09:593
523999490,11cyclictest23835-21sed11:15:272
5238994922,3cyclictest25-21ksoftirqd/109:17:241
134491490,6ptp4l0-21swapper/208:30:032
134491490,4ptp4l0-21swapper/311:46:503
134491490,4ptp4l0-21swapper/109:11:181
134491490,3ptp4l0-21swapper/311:24:193
523999482,44cyclictest0-21swapper/211:35:282
523999480,9cyclictest3278-21chrt10:33:082
523999480,11cyclictest26643-21taskset12:34:392
523999480,11cyclictest21513-21chrt10:02:322
5238994818,4cyclictest25-21ksoftirqd/107:37:511
5238994816,9cyclictest25-21ksoftirqd/107:55:191
134491480,5ptp4l0-21swapper/007:29:420
134491480,4ptp4l0-21swapper/310:45:363
134491480,3ptp4l0-21swapper/110:30:271
134491480,3ptp4l0-21swapper/109:29:331
523999470,12cyclictest17100-21unixbench_multi11:00:262
523999470,12cyclictest17100-21unixbench_multi11:00:262
523999470,11cyclictest263232chrt09:04:152
5238994730,7cyclictest25-21ksoftirqd/110:40:171
5238994722,4cyclictest25-21ksoftirqd/110:29:131
5238994714,7cyclictest25-21ksoftirqd/108:25:211
134491470,3ptp4l0-21swapper/012:24:590
523999460,11cyclictest8155-21taskset11:54:242
523999460,11cyclictest29022-21taskset11:29:522
5238994636,3cyclictest25-21ksoftirqd/107:25:011
5238994622,4cyclictest25-21ksoftirqd/112:30:321
5238994614,10cyclictest25-21ksoftirqd/111:40:001
5238994610,8cyclictest25-21ksoftirqd/111:05:141
134491460,4ptp4l0-21swapper/007:22:070
134491460,12ptp4l0-21swapper/009:35:190
523999453,40cyclictest0-21swapper/210:55:272
523999450,7cyclictest28932-21apt-get09:10:132
523999450,41cyclictest11796-21sed09:40:262
523999450,11cyclictest9308-21chrt07:16:142
523999450,11cyclictest27950-21chrt07:55:392
523999450,11cyclictest14255-21taskset07:27:432
523999450,10cyclictest14672-21taskset08:38:252
523899459,7cyclictest25-21ksoftirqd/108:45:171
523899453,3cyclictest25-21ksoftirqd/111:19:591
5238994521,7cyclictest25-21ksoftirqd/111:14:581
5238994517,3cyclictest25-21ksoftirqd/109:31:461
5238994514,7cyclictest25-21ksoftirqd/110:35:161
134491450,5ptp4l0-21swapper/307:05:203
134491450,3ptp4l0-21swapper/010:50:360
134491450,3ptp4l0-21swapper/007:30:160
134491450,10ptp4l0-21swapper/208:08:392
523999440,11cyclictest3512-21taskset11:43:562
523999440,11cyclictest259612chrt07:54:302
523999440,10cyclictest19025-21taskset07:39:102
5238994419,7cyclictest25-21ksoftirqd/111:23:441
5238994414,4cyclictest25-21ksoftirqd/112:05:171
5238994412,7cyclictest25-21ksoftirqd/111:46:541
134491440,8ptp4l0-21swapper/008:47:480
134491440,5ptp4l0-21swapper/008:40:190
134491440,4ptp4l0-21swapper/108:23:281
134491440,4ptp4l0-21swapper/108:23:281
134491440,4ptp4l0-21swapper/007:17:040
134491440,3ptp4l0-21swapper/010:36:310
134491440,3ptp4l0-21swapper/009:03:100
134491440,10ptp4l0-21swapper/209:30:482
134491440,10ptp4l0-21swapper/010:26:510
523999430,8cyclictest29558-21perl10:20:152
523999430,16cyclictest5160-21taskset08:19:542
523899434,2cyclictest121rcu_preempt10:19:401
5238994316,6cyclictest25-21ksoftirqd/107:32:091
5238994312,10cyclictest25-21ksoftirqd/108:50:171
5238994311,8cyclictest25-21ksoftirqd/112:05:001
134491430,9ptp4l0-21swapper/012:05:370
134491430,8ptp4l0-21swapper/208:22:152
134491430,8ptp4l0-21swapper/208:22:152
134491430,4ptp4l0-21swapper/312:04:393
134491430,4ptp4l0-21swapper/311:02:023
134491430,4ptp4l0-21swapper/311:02:023
134491430,4ptp4l0-21swapper/310:44:223
134491430,4ptp4l0-21swapper/211:07:402
134491430,3ptp4l0-21swapper/008:36:570
134491430,2ptp4l321ktimersoftd/208:59:012
5238994213,6cyclictest25-21ksoftirqd/111:40:181
5238994210,10cyclictest25-21ksoftirqd/107:50:151
5237994237,3cyclictest9-21ksoftirqd/011:00:000
134491420,5ptp4l0-21swapper/107:40:141
134491420,4ptp4l0-21swapper/011:23:260
134491420,4ptp4l0-21swapper/010:05:520
134491420,4ptp4l0-21swapper/008:24:090
134491420,4ptp4l0-21swapper/008:24:090
134491420,3ptp4l31586-21apt-get11:35:153
134491420,3ptp4l24690-21apt-get11:20:102
523999410,7cyclictest23390-21ls10:05:262
523899418,8cyclictest25-21ksoftirqd/110:20:261
523899416,7cyclictest25-21ksoftirqd/112:24:551
5238994136,3cyclictest25-21ksoftirqd/112:40:011
5237994135,3cyclictest9-21ksoftirqd/008:30:000
134491410,5ptp4l0-21swapper/309:55:263
134491410,5ptp4l0-21swapper/212:10:252
134491410,5ptp4l0-21swapper/012:10:270
134491410,5ptp4l0-21swapper/007:10:000
134491410,4ptp4l6216-21meminfo07:10:192
134491410,4ptp4l27661-21irqstats10:15:173
134491410,4ptp4l24279-21apt-get10:10:090
134491410,4ptp4l0-21swapper/310:32:533
134491410,4ptp4l0-21swapper/309:40:293
134491410,4ptp4l0-21swapper/308:50:263
134491410,4ptp4l0-21swapper/011:32:480
134491410,4ptp4l0-21swapper/011:26:430
134491410,4ptp4l0-21swapper/011:13:380
134491410,3ptp4l28779-21df08:00:140
523899406,8cyclictest25-21ksoftirqd/111:50:191
5238994034,3cyclictest25-21ksoftirqd/111:30:231
5238994028,4cyclictest25-21ksoftirqd/110:50:001
134491400,9ptp4l0-21swapper/209:49:182
134491400,5ptp4l0-21swapper/312:20:133
134491400,5ptp4l0-21swapper/310:54:163
134491400,5ptp4l0-21swapper/107:09:201
134491400,5ptp4l0-21swapper/010:30:210
134491400,5ptp4l0-21swapper/007:09:300
134491400,4ptp4l0-21swapper/312:15:103
134491400,4ptp4l0-21swapper/312:15:103
134491400,4ptp4l0-21swapper/312:05:203
134491400,4ptp4l0-21swapper/310:29:153
134491400,4ptp4l0-21swapper/308:57:583
134491400,4ptp4l0-21swapper/308:48:463
134491400,4ptp4l0-21swapper/209:24:482
134491400,4ptp4l0-21swapper/111:25:111
134491400,4ptp4l0-21swapper/012:15:220
134491400,4ptp4l0-21swapper/012:15:210
134491400,4ptp4l0-21swapper/011:52:050
134491400,4ptp4l0-21swapper/011:00:460
134491400,4ptp4l0-21swapper/011:00:460
134491400,4ptp4l0-21swapper/010:45:270
134491400,4ptp4l0-21swapper/010:40:290
134491400,4ptp4l0-21swapper/010:17:400
134491400,4ptp4l0-21swapper/009:40:220
134491400,4ptp4l0-21swapper/008:51:080
134491400,3ptp4l13350-21memory07:25:211
523999390,7cyclictest29684-21ntp_states08:00:232
134491390,5ptp4l5936-21cpuspeed_turbos09:30:120
134491390,5ptp4l13915-21sshd12:05:202
134491390,4ptp4l0-21swapper/311:40:193
134491390,4ptp4l0-21swapper/311:30:223
134491390,4ptp4l0-21swapper/309:21:423
134491390,4ptp4l0-21swapper/210:25:132
134491390,4ptp4l0-21swapper/210:15:032
134491390,4ptp4l0-21swapper/207:30:472
134491390,4ptp4l0-21swapper/207:20:342
134491390,4ptp4l0-21swapper/011:41:220
134491390,4ptp4l0-21swapper/011:15:090
134491390,4ptp4l0-21swapper/010:04:560
134491390,4ptp4l0-21swapper/009:45:180
134491390,4ptp4l0-21swapper/009:20:190
134491390,4ptp4l0-21swapper/009:15:130
134491390,4ptp4l0-21swapper/009:13:570
134491390,3ptp4l4348-21irqstats09:25:180
134491390,3ptp4l22900-21iostat_ios12:25:183
134491390,3ptp4l0-21swapper/309:04:363
134491390,3ptp4l0-21swapper/009:55:140
134491380,5ptp4l0-21swapper/309:32:113
134491380,4ptp4l0-21swapper/311:52:283
134491380,4ptp4l0-21swapper/311:10:143
134491380,4ptp4l0-21swapper/310:09:033
134491380,4ptp4l0-21swapper/309:19:183
134491380,4ptp4l0-21swapper/308:20:293
134491380,4ptp4l0-21swapper/308:20:293
134491380,4ptp4l0-21swapper/308:18:513
134491380,4ptp4l0-21swapper/308:10:093
134491380,4ptp4l0-21swapper/307:58:433
134491380,4ptp4l0-21swapper/307:30:133
134491380,4ptp4l0-21swapper/307:11:113
134491380,4ptp4l0-21swapper/012:25:230
134491380,3ptp4l22032-21/usr/sbin/munin07:45:150
134491380,3ptp4l0-21swapper/311:25:153
134491380,3ptp4l0-21swapper/307:46:123
134491380,3ptp4l0-21swapper/007:40:250
46198370,3rtkit-daemon0-21swapper/309:46:043
134491370,4ptp4l0-21swapper/309:25:393
134491370,4ptp4l0-21swapper/308:40:593
134491370,4ptp4l0-21swapper/307:42:263
134491370,4ptp4l0-21swapper/307:15:303
134491370,3ptp4l0-21swapper/312:34:293
134491370,3ptp4l0-21swapper/308:31:263
134491370,3ptp4l0-21swapper/308:25:533
134491370,3ptp4l0-21swapper/307:27:313
134491360,4ptp4l0-21swapper/309:38:293
134491360,3ptp4l0-21swapper/309:10:483
134491360,3ptp4l0-21swapper/307:36:353
134491350,4ptp4l0-21swapper/308:03:393
134491350,3ptp4l0-21swapper/310:20:123
134491340,4ptp4l0-21swapper/310:11:413
134491340,3ptp4l0-21swapper/307:50:023
134491230,4ptp4l0-21swapper/307:22:093
134491220,4ptp4l0-21swapper/312:36:153
134491220,3ptp4l0-21swapper/310:02:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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