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2026-01-07 - 13:02
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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 100 highest latencies:
System rack3slot3.osadl.org (updated Wed Jan 07, 2026 00:46:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9918501170irq/53-eth0-rx-0-21swapper/119:09:281
9918501100irq/53-eth0-rx-0-21swapper/419:06:146
10677210993sleep00-21swapper/019:06:510
10666210894sleep50-21swapper/519:06:447
128501020irq/42-ahci0-21swapper/219:09:114
128501000irq/42-ahci0-21swapper/819:08:5910
1095929488sleep70-21swapper/719:09:599
991850920irq/53-eth0-rx-0-21swapper/319:05:415
991850920irq/53-eth0-rx-0-21swapper/1119:06:123
1071428678sleep100-21swapper/1019:07:252
991850650irq/53-eth0-rx-0-21swapper/919:05:4211
1069625955sleep60-21swapper/619:07:098
1105799450cyclictest0-21swapper/020:16:000
11057992914cyclictest0-21swapper/022:13:060
991850280irq/53-eth0-rx-0-21swapper/720:16:059
991850280irq/53-eth0-rx-0-21swapper/120:16:031
12850280irq/42-ahci0-21swapper/520:16:017
1110499262cyclictest0-21swapper/923:20:2511
1105799220cyclictest0-21swapper/020:09:450
1105799220cyclictest0-21swapper/020:09:450
11057992120cyclictest1812-1kworker/0:1H21:13:580
1105799210cyclictest0-21swapper/022:15:090
1105799210cyclictest0-21swapper/020:10:020
11101992017cyclictest0-21swapper/620:20:018
991850180irq/53-eth0-rx-0-21swapper/1120:15:273
14050180irq/18-ehci_hcd0-21swapper/022:04:370
14050180irq/18-ehci_hcd0-21swapper/022:04:370
1110499181cyclictest0-21swapper/923:07:1211
1110499181cyclictest0-21swapper/923:00:1911
1110499181cyclictest0-21swapper/922:45:1411
1110499181cyclictest0-21swapper/921:38:4711
1110499181cyclictest0-21swapper/920:46:1811
1110499181cyclictest0-21swapper/920:43:2511
1110499181cyclictest0-21swapper/920:28:1511
1110499181cyclictest0-21swapper/920:24:0811
1110499181cyclictest0-21swapper/919:56:1611
1110499181cyclictest0-21swapper/919:12:2911
1110499181cyclictest0-21swapper/900:22:0011
1110499181cyclictest0-21swapper/900:19:1311
1110499181cyclictest0-21swapper/900:08:0511
11101991816cyclictest23512-21qemu-kvm20:14:498
11104991716cyclictest0-21swapper/921:24:1511
11104991715cyclictest17599-21taskset22:14:3611
1110499170cyclictest24007-21tr19:25:1311
1110499170cyclictest22305-21idleruntime20:50:1411
1110499170cyclictest0-21swapper/923:34:5311
1110499170cyclictest0-21swapper/919:45:3511
1110499170cyclictest0-21swapper/919:35:3111
11101991715cyclictest13851-21qemu-kvm22:38:168
11104991615cyclictest24717-21taskset22:22:2111
11104991615cyclictest0-21swapper/923:25:0711
11104991615cyclictest0-21swapper/923:18:2911
11104991615cyclictest0-21swapper/920:57:1911
11104991615cyclictest0-21swapper/900:38:4711
1110299165cyclictest0-21swapper/720:09:389
1110299165cyclictest0-21swapper/720:09:389
1110199163cyclictest0-21swapper/622:19:588
11101991615cyclictest23512-21qemu-kvm20:36:328
11101991615cyclictest13851-21qemu-kvm22:08:598
1109299161cyclictest2242-40kipmi023:30:385
11057991615cyclictest0-21swapper/022:23:580
991850150irq/53-eth0-rx-0-21swapper/1122:13:073
551150ksoftirqd/60-21swapper/622:50:268
481150ksoftirqd/50-21swapper/521:13:557
31150ksoftirqd/00-21swapper/022:50:270
11104991514cyclictest28893-21taskset23:13:1911
11104991514cyclictest0-21swapper/922:55:2611
11104991514cyclictest0-21swapper/922:05:5811
11104991514cyclictest0-21swapper/921:15:1411
1110299155cyclictest0-21swapper/719:15:029
1110199152cyclictest0-21swapper/622:21:378
11101991513cyclictest19466-21python20:45:228
11082991513cyclictest2308-21snmpd22:04:394
11082991513cyclictest2308-21snmpd22:04:394
11057991514cyclictest5511-21chrt20:25:350
991850140irq/53-eth0-rx-0-21swapper/920:16:0711
901140ksoftirqd/110-21swapper/1121:55:363
901140ksoftirqd/110-21swapper/1121:55:363
831140ksoftirqd/100-21swapper/1022:50:262
621140ksoftirqd/70-21swapper/722:50:269
481140ksoftirqd/50-21swapper/523:19:467
481140ksoftirqd/50-21swapper/500:33:457
411140ksoftirqd/40-21swapper/422:50:266
14050140irq/18-ehci_hcd0-21swapper/000:09:590
12850140irq/42-ahci0-21swapper/820:15:5410
12850140irq/42-ahci0-21swapper/220:15:504
11104991413cyclictest21148-21taskset22:18:2511
11104991413cyclictest12476-21wc23:35:1311
11104991413cyclictest0-21swapper/900:00:2511
1110299145cyclictest0-21swapper/721:27:389
1110299144cyclictest0-21swapper/722:00:019
1110299144cyclictest0-21swapper/722:00:019
1110299144cyclictest0-21swapper/721:10:019
1110299144cyclictest0-21swapper/719:35:009
1110299143cyclictest0-21swapper/721:15:019
11092991412cyclictest28560-21sadc22:30:015
11082991412cyclictest2308-21snmpd22:18:104
11057991413cyclictest991850irq/53-eth0-rx-19:22:430
901130ksoftirqd/110-21swapper/1122:50:263
621130ksoftirqd/70-21swapper/722:10:169
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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