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2026-04-27 - 06:03
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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 Mon Apr 27, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1733221530,5sleep2678299cyclictest00:10:132
1719721510,4sleep2678299cyclictest19:30:252
678299662,2cyclictest0-21swapper/221:54:092
274572640,6sleep3678399cyclictest22:10:283
134491630,4ptp4l0-21swapper/022:29:040
678199620,3cyclictest134491ptp4l23:45:181
134491620,4ptp4l0-21swapper/023:45:260
678199590,3cyclictest134491ptp4l22:45:271
134491590,4ptp4l0-21swapper/320:15:123
134491590,4ptp4l0-21swapper/222:17:042
134491590,3ptp4l17553-21ntp_states20:40:233
134491580,4ptp4l0-21swapper/300:35:073
134491580,16ptp4l20416-21timerwakeupswit21:55:283
134491570,3ptp4l28489-21df_abs23:25:160
134491570,3ptp4l0-21swapper/319:55:433
134491570,3ptp4l0-21swapper/319:43:083
134491560,4ptp4l0-21swapper/319:26:073
134491560,4ptp4l0-21swapper/100:22:471
134491560,4ptp4l0-21swapper/020:59:070
134491560,3ptp4l0-21swapper/300:20:193
134491560,3ptp4l0-21swapper/022:53:390
134491560,2ptp4l121rcu_preempt23:21:503
134491550,4ptp4l0-21swapper/320:20:123
134491550,4ptp4l0-21swapper/319:45:383
134491550,4ptp4l0-21swapper/119:09:471
134491550,4ptp4l0-21swapper/119:09:471
134491550,4ptp4l0-21swapper/019:30:330
134491550,4ptp4l0-21swapper/000:23:560
134491550,13ptp4l0-21swapper/223:35:372
134491540,4ptp4l0-21swapper/300:14:293
134491540,4ptp4l0-21swapper/023:42:390
134491540,4ptp4l0-21swapper/020:51:330
134491540,4ptp4l0-21swapper/020:34:070
134491540,4ptp4l0-21swapper/020:06:180
134491540,4ptp4l0-21swapper/019:57:510
134491540,4ptp4l0-21swapper/019:40:080
134491540,4ptp4l0-21swapper/000:29:190
134491540,4ptp4l0-21swapper/000:29:190
134491540,4ptp4l0-21swapper/000:10:320
678199537,44cyclictest19985-21kworker/1:120:53:491
46198530,10rtkit-daemon0-21swapper/320:11:263
134491530,7ptp4l5703-21ps19:05:250
134491530,7ptp4l5703-21ps19:05:250
134491530,4ptp4l0-21swapper/023:24:390
134491520,4ptp4l0-21swapper/323:14:373
134491520,4ptp4l0-21swapper/100:14:471
134491520,4ptp4l0-21swapper/023:02:090
134491520,4ptp4l0-21swapper/022:19:460
134491520,4ptp4l0-21swapper/000:02:140
134491520,3ptp4l0-21swapper/320:00:383
134491520,21ptp4l9-21ksoftirqd/019:20:210
6781995112,37cyclictest19985-21kworker/1:121:40:281
213022510,4sleep00-21swapper/022:00:140
134491510,4ptp4l0-21swapper/120:28:221
134491510,4ptp4l0-21swapper/020:18:510
134491510,4ptp4l0-21swapper/019:48:110
134491510,4ptp4l0-21swapper/019:16:170
134491510,3ptp4l0-21swapper/022:35:320
134491510,1ptp4l0-21swapper/221:08:582
134491500,4ptp4l0-21swapper/322:23:123
134491500,4ptp4l0-21swapper/300:06:373
134491500,4ptp4l0-21swapper/021:52:160
134491500,4ptp4l0-21swapper/020:21:160
134491490,4ptp4l0-21swapper/322:00:193
134491490,4ptp4l0-21swapper/021:30:010
134491490,4ptp4l0-21swapper/021:30:010
134491490,4ptp4l0-21swapper/021:07:320
134491490,4ptp4l0-21swapper/000:39:070
134491490,3ptp4l0-21swapper/220:10:162
134491490,2ptp4l0-21swapper/222:50:382
134491480,4ptp4l0-21swapper/321:35:333
134491480,4ptp4l0-21swapper/219:52:172
134491480,4ptp4l0-21swapper/219:52:172
134491480,4ptp4l0-21swapper/219:05:172
134491480,4ptp4l0-21swapper/219:05:172
134491480,4ptp4l0-21swapper/100:02:161
134491480,4ptp4l0-21swapper/022:14:160
134491480,4ptp4l0-21swapper/021:39:460
134491480,3ptp4l0-21swapper/323:35:403
46198470,2rtkit-daemon0-21swapper/219:36:372
134491470,4ptp4l0-21swapper/120:59:331
134491470,4ptp4l0-21swapper/120:07:021
134491470,4ptp4l0-21swapper/021:01:430
134491470,4ptp4l0-21swapper/020:36:350
134491470,4ptp4l0-21swapper/020:04:590
134491470,4ptp4l0-21swapper/019:10:110
6782994641,3cyclictest23770-21idleruntime-cro00:25:002
678199460,19cyclictest134491ptp4l22:50:271
134491460,5ptp4l0-21swapper/022:30:120
134491460,4ptp4l0-21swapper/123:36:001
134491460,3ptp4l0-21swapper/021:20:140
134491460,10ptp4l0-21swapper/221:30:262
134491460,10ptp4l0-21swapper/221:30:262
134691450,10getstats0-21swapper/321:27:333
134491450,8ptp4l0-21swapper/319:05:133
134491450,8ptp4l0-21swapper/319:05:133
134491450,4ptp4l0-21swapper/320:56:383
134491450,4ptp4l0-21swapper/123:16:111
134491450,4ptp4l0-21swapper/023:11:580
134491450,4ptp4l0-21swapper/000:17:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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