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2026-07-17 - 04:04
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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 Jul 17, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3077121650,3sleep2528599cyclictest22:20:272
5284998016,62cyclictest10206-21kworker/1:221:25:291
5283997437,7cyclictest9-21ksoftirqd/020:45:000
528699699,19cyclictest2213-21sed22:30:183
528499699,58cyclictest10206-21kworker/1:221:42:091
528699671,26cyclictest16350-21ls21:50:213
528699670,27cyclictest5631-21ls23:45:283
134491670,21ptp4l12242-21/usr/sbin/munin22:50:281
528699661,23cyclictest19459-21wc00:15:263
528699660,31cyclictest30212-21sed22:20:203
528699660,22cyclictest32243-21/usr/sbin/munin23:35:173
5283996532,6cyclictest9-21ksoftirqd/000:25:140
528699640,23cyclictest6307-21cpuspeed22:40:143
5283996432,6cyclictest9-21ksoftirqd/020:00:010
5283996431,6cyclictest9-21ksoftirqd/021:40:170
5283996428,5cyclictest9-21ksoftirqd/019:30:000
134491640,6ptp4l0-21swapper/319:07:203
528499636,55cyclictest25403-21kworker/1:023:06:091
5283996331,4cyclictest9-21ksoftirqd/019:15:000
5283996330,5cyclictest9-21ksoftirqd/019:50:140
134491630,3ptp4l32119-21missed_timers20:05:222
528499627,52cyclictest25403-21kworker/1:000:25:491
134491620,5ptp4l0-21swapper/019:05:250
528699610,24cyclictest12725-21seq21:44:143
5283996130,6cyclictest9-21ksoftirqd/023:05:140
5283996130,5cyclictest9-21ksoftirqd/021:35:160
5283996125,5cyclictest9-21ksoftirqd/000:00:010
5283996029,5cyclictest9-21ksoftirqd/023:20:120
5283996029,5cyclictest9-21ksoftirqd/023:10:270
5283996027,5cyclictest9-21ksoftirqd/021:15:260
134491600,17ptp4l0-21swapper/220:40:002
5283995928,5cyclictest9-21ksoftirqd/023:25:150
5283995922,5cyclictest9-21ksoftirqd/000:08:300
5283995921,5cyclictest9-21ksoftirqd/021:50:190
528699582,21cyclictest0-21swapper/322:11:073
528699580,27cyclictest28615-21taskset21:05:533
528699580,23cyclictest26062-21taskset19:52:313
5283995822,5cyclictest9-21ksoftirqd/021:45:280
528699571,27cyclictest26578-21taskset21:04:083
5283995731,6cyclictest9-21ksoftirqd/021:20:160
5283995731,5cyclictest9-21ksoftirqd/020:35:270
5283995724,6cyclictest9-21ksoftirqd/022:00:140
5283995721,10cyclictest9-21ksoftirqd/019:20:110
5283995717,3cyclictest9-21ksoftirqd/022:31:230
134491570,4ptp4l0-21swapper/223:15:292
134491570,4ptp4l0-21swapper/223:15:292
134491570,4ptp4l0-21swapper/220:59:572
134491570,4ptp4l0-21swapper/200:28:122
134491570,3ptp4l0-21swapper/123:03:211
134491570,3ptp4l0-21swapper/120:35:241
528699560,24cyclictest3522-21taskset23:40:383
5283995630,3cyclictest9-21ksoftirqd/000:38:370
134491560,4ptp4l0-21swapper/219:21:002
134491560,4ptp4l0-21swapper/122:45:441
134491560,3ptp4l0-21swapper/220:51:502
134491560,3ptp4l0-21swapper/200:12:322
528699550,25cyclictest7444-21ls23:50:223
528399554,4cyclictest9-21ksoftirqd/021:04:590
5283995526,5cyclictest9-21ksoftirqd/022:35:280
5283995522,4cyclictest9-21ksoftirqd/021:25:180
134491550,4ptp4l0-21swapper/219:30:392
134491550,3ptp4l0-21swapper/019:32:100
134491550,2ptp4l0-21swapper/123:50:171
5283995419,3cyclictest9-21ksoftirqd/000:11:160
5283995418,6cyclictest9-21ksoftirqd/020:17:370
134491540,4ptp4l0-21swapper/220:15:462
134491540,4ptp4l0-21swapper/220:11:512
134491540,4ptp4l0-21swapper/219:49:212
134491540,4ptp4l0-21swapper/200:19:072
134491540,4ptp4l0-21swapper/200:01:532
528699532,20cyclictest0-21swapper/321:10:013
528699530,12cyclictest134491ptp4l21:00:003
528399537,6cyclictest9-21ksoftirqd/022:50:280
528399535,5cyclictest9-21ksoftirqd/023:30:280
528399534,8cyclictest9-21ksoftirqd/021:35:000
5283995339,3cyclictest9-21ksoftirqd/023:40:160
5283995320,4cyclictest9-21ksoftirqd/019:37:570
134491530,4ptp4l0-21swapper/220:41:542
134491530,4ptp4l0-21swapper/220:04:032
134491530,3ptp4l0-21swapper/222:51:502
134491530,3ptp4l0-21swapper/221:46:102
134491530,12ptp4l0-21swapper/121:57:431
528399526,6cyclictest9-21ksoftirqd/019:50:010
528399525,4cyclictest9-21ksoftirqd/021:10:170
5283995226,6cyclictest9-21ksoftirqd/020:05:180
5283995220,5cyclictest9-21ksoftirqd/023:45:250
528399521,8cyclictest121rcu_preempt23:00:250
134491520,5ptp4l0-21swapper/121:51:171
134491520,4ptp4l0-21swapper/219:26:352
134491520,3ptp4l0-21swapper/221:11:442
528699512,22cyclictest0-21swapper/322:05:293
528599513,3cyclictest121rcu_preempt21:18:222
528399515,9cyclictest9-21ksoftirqd/022:25:000
528399514,8cyclictest121rcu_preempt20:13:120
528399514,3cyclictest121rcu_preempt22:10:130
528399513,5cyclictest9-21ksoftirqd/020:00:250
528399513,5cyclictest9-21ksoftirqd/019:40:150
5283995119,4cyclictest9-21ksoftirqd/020:23:420
5283995117,3cyclictest9-21ksoftirqd/023:54:080
134491510,4ptp4l0-21swapper/223:45:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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