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2026-06-28 - 16:49
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Sun Jun 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491700,3ptp4l0-21swapper/012:05:140
375699681,23cyclictest6628-21cat07:15:171
3758996711,10cyclictest26924-21chrt12:39:003
9002660,5sleep00-21swapper/011:40:250
375699661,29cyclictest12748-21taskset07:29:291
134491660,4ptp4l18054-21/usr/sbin/munin12:20:202
134491660,32ptp4l25-21ksoftirqd/108:40:141
375699652,19cyclictest0-21swapper/108:55:001
375699650,29cyclictest924-21taskset10:31:391
375699641,23cyclictest30411-21processes08:05:231
375699640,24cyclictest27579-21sed11:30:151
375899635,17cyclictest3945-21cstates08:20:143
3758996312,11cyclictest31270-21chrt10:29:303
375699632,25cyclictest0-21swapper/112:20:001
375699631,29cyclictest3558-21grep08:19:591
375699630,24cyclictest14237-21sed11:00:191
375699630,23cyclictest10253-21chrt08:33:271
375899628,16cyclictest4247-21awk11:50:113
134491620,5ptp4l0-21swapper/207:05:572
375699611,21cyclictest22789-21cpuspeed_turbos12:30:111
375899595,14cyclictest0-21swapper/307:30:263
3758995911,9cyclictest727-21awk10:30:283
139402590,5sleep00-21swapper/012:10:170
134491590,4ptp4l0-21swapper/210:31:532
375699580,21cyclictest28316-21grep09:10:261
134491580,4ptp4l0-21swapper/208:15:162
134491580,15ptp4l0-21swapper/008:50:190
375699576,18cyclictest7935-21taskset09:36:171
375699571,25cyclictest5484-21seq08:21:101
134491570,4ptp4l0-21swapper/212:37:582
134491570,4ptp4l0-21swapper/012:16:360
134491570,3ptp4l0-21swapper/012:30:220
375699560,24cyclictest14155-21ntpq07:30:221
375699560,23cyclictest5218-21ssh07:10:281
375899558,15cyclictest20524-21/usr/sbin/munin11:15:143
375899555,15cyclictest26853-21/usr/sbin/munin08:00:153
375699552,28cyclictest0-21swapper/111:15:281
134491550,4ptp4l0-21swapper/110:25:261
134491550,4ptp4l0-21swapper/007:55:200
134491550,3ptp4l0-21swapper/008:58:150
134491550,3ptp4l0-21swapper/008:58:150
3758995412,6cyclictest137891phc2sys09:15:143
375699540,26cyclictest6129-21taskset11:53:351
375699540,25cyclictest31421-21taskset11:36:501
375699540,25cyclictest24191-21seq10:12:221
134491540,4ptp4l0-21swapper/209:58:392
375899537,12cyclictest0-21swapper/308:34:283
375899534,11cyclictest3372-21cat11:45:273
375699532,24cyclictest17586-21seq11:09:071
375699530,25cyclictest12672-21taskset08:39:191
375699530,23cyclictest5883-21seq09:34:281
134491530,4ptp4l0-21swapper/312:00:303
134491530,4ptp4l0-21swapper/208:51:072
134491530,4ptp4l0-21swapper/009:39:070
134491530,3ptp4l0-21swapper/211:54:392
134491530,3ptp4l0-21swapper/008:34:180
134491530,3ptp4l0-21swapper/007:42:240
375899527,5cyclictest0-21swapper/312:19:423
375899527,11cyclictest0-21swapper/307:41:083
375899526,14cyclictest19328-21ls10:00:273
375699521,34cyclictest22322-21seq12:28:551
375699521,26cyclictest31168-21seq09:17:391
375699520,26cyclictest8075-21seq10:48:411
375699520,25cyclictest6473-21seq11:55:081
375699520,25cyclictest3469-21seq09:28:021
375699520,25cyclictest24190-21seq07:53:411
134491520,4ptp4l0-21swapper/009:21:070
134491520,4ptp4l0-21swapper/007:34:180
134491520,14ptp4l0-21swapper/010:30:290
134491520,12ptp4l0-21swapper/010:20:230
375899518,7cyclictest134691getstats10:45:193
375899517,9cyclictest0-21swapper/308:44:393
375899515,15cyclictest23757-21ls07:50:253
375899515,10cyclictest5076-21run-parts07:10:253
375699511,26cyclictest991-21seq08:13:551
375699510,27cyclictest12982-21seq10:59:161
375699510,26cyclictest915-21seq09:20:441
375699510,26cyclictest3397-21seq10:37:541
134491510,3ptp4l0-21swapper/207:38:322
375899508,6cyclictest0-21swapper/308:48:413
375699500,26cyclictest10841-21seq12:04:511
375699500,24cyclictest22012-21taskset08:58:201
375699500,24cyclictest22012-21taskset08:58:201
375699500,24cyclictest15074-21taskset09:53:331
134491500,4ptp4l0-21swapper/011:21:530
134491500,12ptp4l0-21swapper/012:25:180
375899497,9cyclictest0-21swapper/310:09:453
375899497,8cyclictest1084-21ls11:40:253
375699491,25cyclictest26738-21runrttasks09:09:491
375699490,25cyclictest26424-21seq07:57:551
375699490,24cyclictest15261-21taskset12:11:561
134491490,3ptp4l0-21swapper/207:49:192
134491490,13ptp4l2429-21date07:05:203
375699481,25cyclictest21954-21taskset07:49:271
375699481,24cyclictest24437-21seq11:23:231
375699480,26cyclictest10121-21seq07:20:561
375699480,24cyclictest26592-21seq11:26:321
134491480,4ptp4l0-21swapper/212:27:282
134491480,4ptp4l0-21swapper/212:17:482
134491480,3ptp4l0-21swapper/210:40:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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