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2026-08-07 - 07:45
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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 Fri Aug 07, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491680,5ptp4l0-21swapper/019:05:210
18952670,4sleep20-21swapper/220:00:262
134491670,4ptp4l0-21swapper/223:40:122
99072640,3sleep30-21swapper/320:20:003
9898996312,9cyclictest27172-21seq23:13:121
134491630,3ptp4l0-21swapper/221:40:042
989899619,11cyclictest28064-21chrt20:57:491
989899619,11cyclictest15703-21chrt23:56:501
989899609,11cyclictest3942-21chrt23:31:221
989899609,10cyclictest30501-21chrt21:04:231
9898996012,10cyclictest27671-21seq00:24:461
9898996010,11cyclictest32649-21chrt21:07:281
989799609,6cyclictest0-21swapper/019:50:190
105582600,6sleep2989999cyclictest20:20:152
9898995912,11cyclictest11236-21seq23:48:221
9898995910,15cyclictest4923-21chrt21:17:071
134491590,4ptp4l0-21swapper/319:35:133
134491590,15ptp4l19660-21apt-get21:50:122
989899585,12cyclictest5722-21taskset22:27:061
9898995812,12cyclictest16843-21seq21:41:421
9898995812,11cyclictest25306-21seq00:19:111
9898995812,10cyclictest21062-21seq20:41:321
9898995812,10cyclictest18700-21seq19:27:381
9898995811,15cyclictest23650-21chrt21:55:381
9898995811,11cyclictest23376-21seq20:46:451
9898995810,11cyclictest29636-21chrt00:25:341
134491580,3ptp4l17808-21kworker/2:223:45:152
134491580,3ptp4l0-21swapper/221:45:162
9898995713,16cyclictest30105-21seq19:51:341
9898995713,11cyclictest9683-21seq20:18:221
9898995712,11cyclictest14225-21seq19:19:281
9898995712,11cyclictest14225-21seq19:19:281
9898995710,10cyclictest7202-21runrttasks21:21:401
134491570,4ptp4l0-21swapper/319:29:593
989899569,11cyclictest12153-21taskset21:33:211
989899568,11cyclictest10074-21seq20:20:101
989899567,12cyclictest25358-21ntpq22:00:221
989899567,12cyclictest24679-21seq23:05:461
9898995612,15cyclictest29380-21chrt23:17:061
9898995612,12cyclictest3109-21seq22:21:291
9898995612,10cyclictest2102-21seq00:38:451
9898995611,13cyclictest7355-21seq20:13:001
9898995611,11cyclictest8168-21seq22:33:561
9898995610,12cyclictest31750-21chrt23:22:441
9898995610,12cyclictest13344-21seq23:51:041
989799569,7cyclictest0-21swapper/021:40:140
134491560,4ptp4l0-21swapper/319:23:093
134491560,4ptp4l0-21swapper/221:15:342
134491560,4ptp4l0-21swapper/220:58:112
100692560,4sleep00-21swapper/022:35:250
989899559,11cyclictest25661-21taskset20:51:361
9898995512,11cyclictest17756-21seq22:53:191
9898995511,11cyclictest11028-21chrt22:40:121
9898995510,10cyclictest28470-21taskset22:08:121
9898995510,10cyclictest28470-21taskset22:08:121
989799556,10cyclictest1317-21runrttasks20:38:590
989799554,11cyclictest0-21swapper/023:20:230
134491550,4ptp4l0-21swapper/321:08:403
134491550,4ptp4l0-21swapper/320:13:023
134491550,4ptp4l0-21swapper/222:24:282
134491550,4ptp4l0-21swapper/220:17:442
134491550,4ptp4l0-21swapper/220:08:082
134491550,4ptp4l0-21swapper/219:30:142
134491550,4ptp4l0-21swapper/219:13:282
134491550,4ptp4l0-21swapper/200:20:062
989899549,11cyclictest32151-21chrt00:33:211
989899547,9cyclictest0-21swapper/123:40:361
989899546,14cyclictest10814-21latency19:10:181
9898995412,16cyclictest32555-21seq19:55:471
9898995412,15cyclictest20434-21seq23:00:051
9898995411,17cyclictest9795-21chrt21:27:351
9898995411,11cyclictest22744-21seq00:10:531
989799547,10cyclictest1317-21runrttasks22:11:190
134491540,5ptp4l0-21swapper/023:47:480
134491540,4ptp4l0-21swapper/322:33:373
134491540,4ptp4l0-21swapper/219:43:462
134491540,3ptp4l0-21swapper/220:10:272
9898995312,11cyclictest18712-21seq20:36:061
9898995312,10cyclictest19229-21chrt21:47:451
9898995311,17cyclictest30732-21seq22:12:461
9898995310,16cyclictest20524-21chrt00:06:531
9898995310,11cyclictest20170-21taskset22:59:501
9898995310,10cyclictest5194-21chrt20:09:441
989799538,10cyclictest1317-21runrttasks20:12:110
989799537,11cyclictest1317-21runrttasks22:31:200
989799537,10cyclictest23600-21seq20:49:350
989799535,11cyclictest0-21swapper/022:40:500
989799534,17cyclictest0-21swapper/019:36:340
989799533,12cyclictest26448-21/usr/sbin/munin23:10:230
134491530,4ptp4l0-21swapper/223:17:162
134491530,4ptp4l0-21swapper/222:28:522
134491530,4ptp4l0-21swapper/222:12:152
134491530,3ptp4l0-21swapper/323:40:443
134491530,3ptp4l0-21swapper/223:58:472
134491530,3ptp4l0-21swapper/221:31:112
134491530,3ptp4l0-21swapper/221:21:432
989899529,11cyclictest16513-21seq19:24:051
9898995211,17cyclictest15035-21seq22:45:411
9898995211,10cyclictest6391-21taskset23:38:121
9898995210,10cyclictest16429-21chrt20:31:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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