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2026-05-28 - 23:55
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Thu May 28, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
399362099124102,19cyclictest4037385-21apt-get09:25:140
39936239910490,10cyclictest4079272-21latency_hist11:35:011
39936239910396,4cyclictest4053316-21kworker/u8:2+events_unbound11:00:231
39936239910394,6cyclictest4082709-21kworker/u8:3+events_unbound11:55:171
39936209910092,5cyclictest4017917-21kworker/u8:0+events_unbound08:55:010
3993623999995,3cyclictest4027179-21kworker/u8:3+events_unbound09:35:241
3993623999688,6cyclictest4079281-21apt-get11:35:021
3993623999588,5cyclictest4064468-21kworker/u8:0+events_unbound10:55:021
3993623999489,4cyclictest4053316-21kworker/u8:2+events_unbound11:05:141
3993623999483,8cyclictest4100242-21apt-get12:40:011
3993620999485,6cyclictest4047160-21kworker/u8:0+flush-179:010:10:190
3993623999388,4cyclictest4029065-21kworker/u8:1+flush-179:009:00:231
3993620999386,5cyclictest4100259-21latency_hist12:40:010
3993623999286,4cyclictest4061206-21kworker/u8:0+events_unbound10:40:131
3993620999286,4cyclictest4033624-21kworker/u8:0+flush-179:009:20:250
3993620998878,7cyclictest4022445-21latency_hist08:40:010
3993620998878,7cyclictest1213033-21systemd-journal11:35:150
3993623998777,7cyclictest4072638-21latency_hist11:15:011
3993623998680,4cyclictest4051678-21kworker/u8:1+events_unbound10:35:191
3993623998580,3cyclictest4082709-21kworker/u8:3+flush-179:012:15:201
3993623998580,3cyclictest4074233-21kworker/u8:0+events_unbound11:20:141
3993623998580,3cyclictest4074233-21kworker/u8:0+events_unbound11:20:131
3993623998577,3cyclictest4017917-21kworker/u8:0+events_unbound08:45:241
3993623998576,7cyclictest4081392-21kworker/u8:0+events_unbound11:50:011
3993623998479,4cyclictest4041658-21kworker/u8:2+flush-179:010:00:131
3993623998478,5cyclictest4084355-21kworker/u8:2+events_unbound12:00:281
3993623998376,5cyclictest4046657-21apt-get09:55:031
3993623998371,11cyclictest4053316-21kworker/u8:2+flush-179:010:30:261
3993620998271,8cyclictest3995344-21apt-get07:15:110
3993620998267,12cyclictest1213033-21systemd-journal10:39:560
3993623998174,5cyclictest4022719-21apt-get08:40:111
3993623998076,3cyclictest4024031-21kworker/u8:1+events_unbound08:50:231
3993623997974,4cyclictest4090716-21kworker/u8:1+flush-179:012:20:261
3993623997974,4cyclictest4069509-21kworker/u8:3+flush-179:011:15:261
3993623997974,4cyclictest4053316-21kworker/u8:2+flush-179:010:50:251
3993623997974,4cyclictest4017917-21kworker/u8:0+flush-179:008:30:261
3993620997971,5cyclictest4053316-21kworker/u8:2+flush-179:011:05:210
3993623997870,4cyclictest4084355-21kworker/u8:2+events_unbound12:05:191
3993620997867,9cyclictest4043464-21apt-get09:45:120
3993620997867,9cyclictest4043464-21apt-get09:45:120
3993620997866,8cyclictest4047160-21kworker/u8:0+events_unbound10:00:000
3993623997774,2cyclictest4014465-21kworker/u8:3+events_unbound08:20:181
3993623997772,4cyclictest4051678-21kworker/u8:1+flush-179:010:45:221
3993623997769,6cyclictest4095722-21apt-get12:25:121
3993623997672,3cyclictest4027179-21kworker/u8:3+flush-179:009:15:261
3993623997671,4cyclictest4075869-21kworker/u8:1+events_unbound11:50:181
3993623997671,4cyclictest4011025-21kworker/u8:1+flush-179:008:05:191
3993623997670,4cyclictest4051678-21kworker/u8:1+flush-179:010:15:111
3993620997667,6cyclictest4012896-21latency_hist08:10:020
3993623997571,3cyclictest4027179-21kworker/u8:3+events_unbound08:55:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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