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2026-05-07 - 16:25
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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 rackbslot7.osadl.org (updated Thu May 07, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27649213010,37sleep11-21systemd07:01:411
2630321180,8sleep10-21swapper/111:27:011
2630321180,8sleep10-21swapper/111:27:011
277669911737,12cyclictest0-21swapper/010:12:110
277669911653,57cyclictest3048-21kworker/u18:2+events_unbound08:16:390
98021150,5sleep10-21swapper/111:38:081
277669911540,10cyclictest0-21swapper/010:02:110
277669911434,22cyclictest0-21swapper/012:21:400
277669911355,53cyclictest27754-21cyclictest08:32:390
27766991113,56cyclictest8120-21ssh11:51:230
27766991104,40cyclictest17687-21fschecks_time11:12:580
27766991072,31cyclictest2609-21latency_hist09:01:420
27766991072,31cyclictest2609-21latency_hist09:01:420
277719910340,9cyclictest0-21swapper/111:47:021
277719910285,11cyclictest2451-21diskmemload10:58:081
277669910145,10cyclictest352-21runrttasks08:06:480
277669910138,11cyclictest27754-21cyclictest07:31:500
277669910138,11cyclictest27754-21cyclictest07:31:500
2262521000,6sleep10-21swapper/108:22:121
27771999951,41cyclictest2374-21systemd-journal07:28:561
27771999951,41cyclictest2374-21systemd-journal07:28:561
2777599984,80cyclictest16474-21apt-get11:11:542
27771999736,9cyclictest0-21swapper/112:27:031
27771999727,13cyclictest0-21swapper/109:42:041
27771999646,43cyclictest13259-21sh11:06:391
27771999646,43cyclictest13259-21sh11:06:391
27771999640,9cyclictest0-21swapper/108:12:141
27771999638,7cyclictest0-21swapper/109:06:551
27771999638,7cyclictest0-21swapper/109:06:551
27771999637,12cyclictest0-21swapper/111:16:391
2776699964,42cyclictest10547-21apt-get11:01:590
2776699964,42cyclictest10547-21apt-get11:01:590
2777599953,60cyclictest7331-21apt-get10:57:032
27771999549,41cyclictest27754-21cyclictest07:52:001
2776699953,39cyclictest26580-21apt-get08:36:440
2776699953,39cyclictest26580-21apt-get08:36:440
2777599943,68cyclictest13960-21taskset11:07:192
2777599943,68cyclictest13960-21taskset11:07:192
27771999438,7cyclictest0-21swapper/109:12:081
2777199943,37cyclictest7957-21ls07:37:141
2777199943,36cyclictest29993-21/usr/sbin/munin09:48:071
2777199943,34cyclictest2451-21diskmemload10:22:511
2777199943,34cyclictest2451-21diskmemload10:22:511
27771999347,39cyclictest0-21swapper/112:00:431
27771999343,44cyclictest32248-21mailstats07:12:131
27771999337,13cyclictest0-21swapper/110:12:041
27771999334,12cyclictest0-21swapper/108:02:151
2777199933,31cyclictest30526-21/usr/sbin/munin10:42:041
2777599923,77cyclictest30434-21/usr/sbin/munin09:47:522
27771999272,13cyclictest11007-21kworker/u19:2-flush-179:008:07:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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