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2026-07-05 - 16:36
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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 Jul 05, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105962690,6sleep210598-21latency_hist07:55:012
22320996713,16cyclictest24153-21chrt08:22:001
22320996713,16cyclictest24153-21chrt08:22:001
22320996614,16cyclictest15176-21chrt09:13:151
22320996614,15cyclictest31768-21chrt09:48:491
22320996613,16cyclictest6567-21chrt12:22:331
22320996514,16cyclictest5750-21chrt07:43:321
134491650,4ptp4l0-21swapper/308:25:013
22320996413,15cyclictest24642-21chrt09:30:591
22320996413,15cyclictest10911-21taskset09:05:081
22320996314,16cyclictest31889-21chrt12:06:121
22320996313,16cyclictest1179-21chrt08:42:221
22320996312,12cyclictest6089-21taskset10:00:351
22320996311,11cyclictest24786-21taskset11:51:281
134491630,5ptp4l0-21swapper/310:30:103
22320996214,11cyclictest12799-21cat07:59:551
22320996211,10cyclictest28799-21seq07:22:251
22320996114,11cyclictest29444-21seq09:43:261
22320996113,11cyclictest26402-21seq07:16:231
22320996113,11cyclictest17530-21taskset09:18:591
22320996112,12cyclictest24246-21seq07:13:141
22320996112,11cyclictest31726-21seq10:59:051
22320996111,11cyclictest8138-21taskset08:57:171
134491610,5ptp4l0-21swapper/311:58:503
22320996016,11cyclictest28916-21seq08:31:251
22320996015,12cyclictest5956-21taskset08:53:471
22320996015,12cyclictest21720-21seq08:15:361
22320996015,11cyclictest24911-21cat10:44:561
22320996015,10cyclictest14997-21seq08:02:441
22320996014,9cyclictest962-21seq07:32:201
22320996014,11cyclictest19526-21seq08:11:551
22320996014,11cyclictest1601-21seq11:03:301
22320996014,11cyclictest13780-21seq12:39:011
22320996012,11cyclictest1552-21seq09:52:211
134491600,3ptp4l1301-21snmpd08:38:112
134491600,3ptp4l0-21swapper/309:46:543
134491600,26ptp4l41-21ksoftirqd/308:55:183
22320995915,10cyclictest8024-21seq07:48:171
22320995914,11cyclictest17347-21seq08:08:261
22320995914,11cyclictest13000-21seq11:26:201
22320995913,12cyclictest27110-21taskset09:38:161
22320995913,10cyclictest3236-21taskset07:36:001
22320995913,10cyclictest10834-21chrt10:12:321
134491590,4ptp4l0-21swapper/008:15:120
134491590,3ptp4l0-21swapper/211:55:262
22320995815,11cyclictest31483-21seq08:39:521
22320995815,11cyclictest27051-21seq10:48:011
22320995815,10cyclictest27018-21seq11:55:401
22320995814,18cyclictest13011-21seq10:16:001
22320995814,12cyclictest10349-21seq09:00:541
22320995814,11cyclictest6089-21seq11:11:201
22320995814,11cyclictest22537-21chrt09:28:261
22320995814,11cyclictest22537-21chrt09:28:261
22320995814,11cyclictest15544-21seq11:31:051
22320995814,11cyclictest15544-21seq11:31:051
22320995814,11cyclictest15440-21seq10:21:411
22320995812,15cyclictest1763-21taskset12:10:551
22320995714,16cyclictest11287-21chrt12:34:121
22320995714,11cyclictest20370-21seq11:43:541
22320995713,12cyclictest22695-21taskset11:49:101
22320995713,11cyclictest8523-21runrttasks11:18:051
134491570,4ptp4l29174-21sed09:40:262
134491570,3ptp4l0-21swapper/307:42:173
22320995615,10cyclictest9042-21seq12:29:501
22320995615,10cyclictest9042-21seq12:29:501
22320995614,15cyclictest10342-21seq07:53:301
22320995614,10cyclictest20153-21seq10:33:161
22320995613,10cyclictest15943-21runrttasks10:25:101
22320995612,10cyclictest22324-21runrttasks10:36:291
134491560,4ptp4l0-21swapper/210:27:312
134491560,4ptp4l0-21swapper/109:55:151
22320995514,16cyclictest29323-21chrt10:52:401
22320995514,11cyclictest4286-21seq12:18:041
134491550,5ptp4l0-21swapper/311:34:043
134491550,5ptp4l0-21swapper/311:34:043
22320995412,10cyclictest30988-21taskset07:26:031
22320995412,10cyclictest19880-21taskset09:21:361
22320995412,10cyclictest10687-21taskset11:21:071
22320995411,9cyclictest18148-21chrt11:39:571
134491540,6ptp4l0-21swapper/310:47:413
134491540,4ptp4l0-21swapper/311:26:183
134491540,4ptp4l0-21swapper/307:50:233
134491540,4ptp4l0-21swapper/210:37:352
134491540,12ptp4l19987-21apt-get07:05:122
22320995314,15cyclictest3858-21taskset11:07:121
2231999537,11cyclictest1317-21runrttasks11:34:510
2231999537,11cyclictest1317-21runrttasks11:34:510
2231999537,11cyclictest1317-21runrttasks10:54:100
2231999536,16cyclictest1317-21runrttasks09:26:130
2231999536,16cyclictest1317-21runrttasks09:26:130
2231999536,11cyclictest29657-21seq12:02:070
2231999536,11cyclictest1317-21runrttasks08:05:500
2231999533,15cyclictest23960-21ntp_kernel_err10:40:240
2231999531,10cyclictest0-21swapper/010:25:160
134491530,4ptp4l0-21swapper/308:50:143
134491530,4ptp4l0-21swapper/308:40:523
134491530,4ptp4l0-21swapper/211:47:412
134491530,4ptp4l0-21swapper/209:53:262
2231999528,6cyclictest0-21swapper/009:00:180
2231999527,10cyclictest1317-21runrttasks11:27:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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