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2026-06-20 - 04:54
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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 Sat Jun 20, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491690,4ptp4l18255-21apt-get23:15:112
134491680,4ptp4l0-21swapper/200:00:012
165572620,3sleep116562-21irqrtprio22:00:171
134491590,9ptp4l0-21swapper/221:41:412
1731995827,9cyclictest9-21ksoftirqd/020:55:200
134491580,7ptp4l0-21swapper/219:05:092
134491580,4ptp4l0-21swapper/223:02:142
134491570,3ptp4l0-21swapper/222:14:482
134491560,4ptp4l0-21swapper/319:05:193
134491560,4ptp4l0-21swapper/219:57:412
134491560,4ptp4l0-21swapper/022:40:220
134491560,3ptp4l0-21swapper/219:20:182
134491560,12ptp4l0-21swapper/123:40:211
173199550,13cyclictest9-21ksoftirqd/019:50:120
134491550,4ptp4l0-21swapper/200:39:142
134491550,3ptp4l0-21swapper/120:45:251
134491550,3ptp4l0-21swapper/120:25:171
173199542,7cyclictest9-21ksoftirqd/021:10:210
134491540,5ptp4l0-21swapper/119:36:451
134491540,4ptp4l0-21swapper/223:34:472
134491540,4ptp4l0-21swapper/222:16:142
134491540,4ptp4l0-21swapper/219:49:382
134491540,4ptp4l0-21swapper/200:05:232
134491540,3ptp4l0-21swapper/219:40:172
1731995327,2cyclictest9-21ksoftirqd/022:07:190
134491530,4ptp4l0-21swapper/319:34:133
134491530,4ptp4l0-21swapper/319:15:143
134491530,4ptp4l0-21swapper/220:32:282
134491530,4ptp4l0-21swapper/220:04:282
134491530,4ptp4l0-21swapper/123:34:551
134491530,3ptp4l0-21swapper/021:20:580
173199525,9cyclictest9-21ksoftirqd/023:50:150
173199524,5cyclictest9-21ksoftirqd/020:30:000
173199523,6cyclictest9-21ksoftirqd/022:55:010
134491520,4ptp4l0-21swapper/222:24:322
134491520,4ptp4l0-21swapper/221:37:332
173199516,8cyclictest9-21ksoftirqd/021:45:190
173199516,8cyclictest9-21ksoftirqd/021:45:190
173199516,6cyclictest9-21ksoftirqd/021:50:150
173199510,7cyclictest101ktimersoftd/023:05:260
134491510,4ptp4l0-21swapper/222:35:322
134491510,4ptp4l0-21swapper/200:16:292
134491510,4ptp4l0-21swapper/023:19:240
173199505,8cyclictest9-21ksoftirqd/019:35:240
173199505,8cyclictest9-21ksoftirqd/000:10:250
173199502,7cyclictest14514-21grep00:15:180
134491500,4ptp4l0-21swapper/223:48:092
134491500,4ptp4l0-21swapper/222:49:452
134491500,4ptp4l0-21swapper/200:26:242
134491500,3ptp4l0-21swapper/021:15:270
173499492,44cyclictest23341-21cut21:05:203
173199496,5cyclictest9-21ksoftirqd/022:20:000
173199495,7cyclictest9-21ksoftirqd/020:00:120
173199495,5cyclictest9-21ksoftirqd/020:05:130
173199495,5cyclictest9-21ksoftirqd/019:14:590
173199494,7cyclictest9-21ksoftirqd/022:45:250
173199493,5cyclictest9-21ksoftirqd/023:25:270
173199492,6cyclictest0-21swapper/019:55:210
1731994921,7cyclictest9-21ksoftirqd/023:45:130
173199491,5cyclictest9-21ksoftirqd/019:45:260
134491490,4ptp4l0-21swapper/222:41:162
134491490,4ptp4l0-21swapper/000:21:100
173199485,7cyclictest9-21ksoftirqd/021:35:240
173199485,6cyclictest9-21ksoftirqd/000:40:010
173199485,5cyclictest9-21ksoftirqd/022:25:010
173199485,5cyclictest9-21ksoftirqd/019:44:590
173199485,4cyclictest9-21ksoftirqd/020:45:180
173199484,5cyclictest9-21ksoftirqd/020:50:260
173199484,2cyclictest0-21swapper/021:55:190
173199483,5cyclictest9-21ksoftirqd/020:40:190
1731994810,3cyclictest9-21ksoftirqd/022:28:030
173199480,11cyclictest9-21ksoftirqd/021:08:110
134491480,4ptp4l0-21swapper/320:37:173
134491480,4ptp4l0-21swapper/200:31:412
134491480,3ptp4l0-21swapper/022:10:270
134491480,12ptp4l0-21swapper/122:25:581
134491480,10ptp4l0-21swapper/220:15:232
173199474,9cyclictest9-21ksoftirqd/000:25:190
173199474,5cyclictest9-21ksoftirqd/023:35:150
173199473,6cyclictest9-21ksoftirqd/000:00:010
173199473,5cyclictest9-21ksoftirqd/022:30:020
173199472,5cyclictest11226-21cut19:30:130
173199470,5cyclictest2022-21sed20:20:140
134491470,4ptp4l0-21swapper/320:34:353
134491470,4ptp4l0-21swapper/219:17:472
173199465,8cyclictest9-21ksoftirqd/023:00:290
173199464,5cyclictest9-21ksoftirqd/022:00:190
173199464,5cyclictest9-21ksoftirqd/000:00:120
173199464,4cyclictest9-21ksoftirqd/022:55:290
173199464,3cyclictest9-21ksoftirqd/019:20:180
173199463,5cyclictest9-21ksoftirqd/000:05:260
173199462,5cyclictest9-21ksoftirqd/023:30:140
1731994618,7cyclictest9-21ksoftirqd/019:29:050
1731994616,5cyclictest9-21ksoftirqd/020:15:250
134491460,4ptp4l0-21swapper/319:54:553
134491460,4ptp4l0-21swapper/319:38:573
134491460,4ptp4l0-21swapper/219:10:012
134491460,4ptp4l0-21swapper/000:30:510
134491460,3ptp4l0-21swapper/021:29:150
173299453,40cyclictest0-21swapper/119:22:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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