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2026-06-02 - 11:57
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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 Tue Jun 02, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1852521660,2sleep12669399cyclictest20:00:201
2612921640,6sleep32669599cyclictest20:15:253
2500521640,3sleep32669599cyclictest23:40:253
2641921450,6sleep22669499cyclictest21:25:292
26694998216,63cyclictest32204-21unixbench_singl23:55:292
134491590,4ptp4l0-21swapper/322:25:293
134491590,3ptp4l0-21swapper/319:15:573
134491580,4ptp4l0-21swapper/220:47:162
134491580,4ptp4l0-21swapper/200:17:372
134491570,4ptp4l0-21swapper/222:35:192
134491570,3ptp4l0-21swapper/319:45:443
134491570,16ptp4l0-21swapper/223:30:242
134491570,14ptp4l0-21swapper/221:05:162
134491560,4ptp4l0-21swapper/021:02:590
134491560,3ptp4l0-21swapper/322:00:163
134491560,3ptp4l0-21swapper/220:32:332
134491550,4ptp4l0-21swapper/221:46:202
134491550,4ptp4l0-21swapper/019:24:480
134491550,3ptp4l0-21swapper/020:35:240
134491540,3ptp4l0-21swapper/220:55:182
134491530,4ptp4l0-21swapper/321:00:233
134491530,4ptp4l0-21swapper/320:25:083
134491530,13ptp4l24873-21awk19:05:161
134491520,5ptp4l0-21swapper/223:45:202
134491520,3ptp4l0-21swapper/323:33:043
134491520,3ptp4l0-21swapper/321:55:483
134491520,3ptp4l0-21swapper/222:16:362
134491520,3ptp4l0-21swapper/220:25:192
134491510,9ptp4l0-21swapper/022:45:240
134491510,5ptp4l0-21swapper/322:43:533
134491510,4ptp4l0-21swapper/320:22:443
134491510,4ptp4l0-21swapper/221:14:392
134491510,4ptp4l0-21swapper/200:24:192
134491510,3ptp4l0-21swapper/222:00:072
134491510,1ptp4l23854-21kworker/3:221:05:433
134491510,11ptp4l0-21swapper/222:20:222
26695995044,4cyclictest448-21dbus-daemon20:40:003
134491500,5ptp4l0-21swapper/220:41:132
134491500,4ptp4l0-21swapper/321:17:023
134491500,4ptp4l0-21swapper/300:37:503
134491500,4ptp4l0-21swapper/300:07:243
134491500,4ptp4l0-21swapper/019:05:170
134491500,11ptp4l0-21swapper/320:30:253
134491490,5ptp4l0-21swapper/219:09:192
134491490,4ptp4l0-21swapper/322:09:243
134491490,4ptp4l0-21swapper/319:09:543
134491490,4ptp4l0-21swapper/223:10:542
134491490,4ptp4l0-21swapper/222:08:162
134491490,4ptp4l0-21swapper/220:11:132
134491490,4ptp4l0-21swapper/219:53:422
134491490,4ptp4l0-21swapper/219:39:392
134491490,4ptp4l0-21swapper/200:02:312
134491490,4ptp4l0-21swapper/023:56:250
134491490,4ptp4l0-21swapper/021:21:290
134491490,3ptp4l0-21swapper/322:37:443
134491490,3ptp4l0-21swapper/223:50:192
134491490,2ptp4l0-21swapper/121:20:331
134491480,6ptp4l9-21ksoftirqd/000:01:140
134491480,4ptp4l0-21swapper/323:35:353
134491480,4ptp4l0-21swapper/320:42:273
134491480,4ptp4l0-21swapper/320:10:033
134491480,4ptp4l0-21swapper/222:45:012
134491480,4ptp4l0-21swapper/222:42:482
134491480,4ptp4l0-21swapper/220:53:022
134491480,4ptp4l0-21swapper/220:37:312
134491480,4ptp4l0-21swapper/220:00:392
134491480,3ptp4l0-21swapper/000:25:260
134491480,3ptp4l0-21swapper/000:25:260
134491470,4ptp4l0-21swapper/319:34:273
134491470,4ptp4l0-21swapper/219:32:022
134491470,4ptp4l0-21swapper/020:47:360
134491470,10ptp4l0-21swapper/222:54:502
134491460,4ptp4l0-21swapper/322:51:363
134491460,4ptp4l0-21swapper/223:26:542
134491460,4ptp4l0-21swapper/219:15:382
134491460,4ptp4l0-21swapper/219:11:532
134491460,4ptp4l0-21swapper/219:11:522
134491460,3ptp4l0-21swapper/323:02:043
134491460,3ptp4l0-21swapper/219:46:212
134491460,2ptp4l0-21swapper/322:34:053
134491460,11ptp4l0-21swapper/120:40:291
134491450,9ptp4l0-21swapper/022:56:070
134491450,5ptp4l29342-21apt-get21:35:120
134491450,4ptp4l0-21swapper/321:36:043
134491450,4ptp4l0-21swapper/319:58:123
134491450,4ptp4l0-21swapper/223:05:042
134491450,4ptp4l0-21swapper/223:05:042
134491450,12ptp4l0-21swapper/020:15:150
134491440,9ptp4l0-21swapper/020:51:340
134491440,8ptp4l0-21swapper/200:14:352
134491440,4ptp4l15097-21apt-get19:55:112
134491440,4ptp4l0-21swapper/223:18:182
134491440,4ptp4l0-21swapper/221:01:432
134491440,4ptp4l0-21swapper/200:06:132
134491440,3ptp4l0-21swapper/221:31:582
134491440,3ptp4l0-21swapper/219:23:002
134491440,10ptp4l0-21swapper/223:00:232
26694994339,2cyclictest33-21ksoftirqd/223:39:592
134491430,9ptp4l0-21swapper/023:18:440
134491430,8ptp4l0-21swapper/023:11:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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