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2026-09-11 - 15:05
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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 rack0slot2.osadl.org (updated Fri Sep 11, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13667822960,1sleep50-21swapper/509:58:295
100667525545,7sleep40-21swapper/407:08:584
100659925419,30sleep70-21swapper/707:07:577
1007047994944,4cyclictest1589266-21kworker/u16:4+flush-8:011:39:565
100665724838,7sleep50-21swapper/507:08:435
15021292420,0sleep71502130-21ssh10:52:327
1007042993937,2cyclictest1127224-21kworker/u16:1+events_unbound09:49:564
1007042993836,2cyclictest1517066-21kworker/u16:1+flush-8:011:24:564
1007042993734,2cyclictest1429457-21kworker/u16:2+events_unbound10:29:594
1007047993532,2cyclictest1491210-21kworker/u16:5+flush-8:010:55:285
1007047993532,2cyclictest1491210-21kworker/u16:5+flush-8:010:55:285
1007042993430,3cyclictest1429457-21kworker/u16:2+flush-8:011:00:064
100654223410,8sleep60-21swapper/607:07:086
1007042993331,2cyclictest1337197-21kworker/u16:0+events_unbound11:54:074
1007042993330,2cyclictest1589215-21kworker/u16:2+events_unbound11:35:064
1007047993230,2cyclictest1337197-21kworker/u16:0+events_unbound11:34:565
1007053993126,4cyclictest1234296-21latency_hist09:04:577
1007047993129,2cyclictest1627282-21kworker/u16:5+events_unbound11:45:185
1007047993128,2cyclictest1491210-21kworker/u16:5+flush-8:010:59:585
1007042993129,2cyclictest1234679-21kworker/u16:3+events_unbound09:16:154
1007042993028,2cyclictest1562719-21kworker/u16:3+events_unbound11:29:064
1007042993028,2cyclictest1429457-21kworker/u16:2+events_unbound10:58:394
1007042993028,2cyclictest1429457-21kworker/u16:2+events_unbound10:58:394
1007042993028,2cyclictest1137370-21kworker/u16:2+events_unbound08:25:244
1007042993027,2cyclictest1127224-21kworker/u16:1+events_unbound09:59:584
1007053992924,4cyclictest1528194-21latency_hist11:04:567
1007042992927,2cyclictest1367664-21kworker/u16:3+events_unbound10:44:514
1007042992826,2cyclictest1701660-21kworker/u16:2+events_unbound12:38:294
1007042992826,2cyclictest1701660-21kworker/u16:2+events_unbound12:21:074
1007042992826,2cyclictest1627282-21kworker/u16:5+events_unbound12:06:054
1007042992826,2cyclictest1627282-21kworker/u16:5+events_unbound11:45:574
1007042992826,2cyclictest1337197-21kworker/u16:0+events_unbound12:04:074
1007042992826,2cyclictest1127224-21kworker/u16:1+events_unbound08:49:564
14028242270,1chrt1402823-21ssh10:11:457
1007047992725,2cyclictest1589266-21kworker/u16:4+events_unbound11:44:565
1007047992725,2cyclictest1281599-21kworker/u16:4+events_unbound09:35:385
1007047992725,2cyclictest1234679-21kworker/u16:3+flush-8:009:15:265
1007047992724,3cyclictest987446-21kworker/u16:0+flush-8:007:25:145
1007042992725,2cyclictest1404865-21kworker/u16:4+flush-8:010:16:064
1007042992724,2cyclictest1281599-21kworker/u16:4+events_unbound09:34:574
1007047992623,2cyclictest1281598-21kworker/u16:2+events_unbound09:25:125
1007042992624,2cyclictest1701660-21kworker/u16:2+flush-8:012:32:174
1007042992624,2cyclictest1517066-21kworker/u16:1+flush-8:011:05:384
1007042992624,2cyclictest1491210-21kworker/u16:5+events_unbound10:53:544
1007042992624,2cyclictest1429457-21kworker/u16:2+events_unbound10:45:514
1007042992624,2cyclictest1127224-21kworker/u16:1+flush-8:009:53:244
1007042992623,2cyclictest1281598-21kworker/u16:2+events_unbound10:05:064
1007053992522,2cyclictest16250irq/16-ehci_hcd:usb211:45:227
1007053992520,4cyclictest1127450-21latency_hist08:09:577
1007047992522,3cyclictest1030503-21kworker/u16:3+flush-8:007:50:225
1007042992523,2cyclictest1627282-21kworker/u16:5+events_unbound12:13:544
1007042992523,2cyclictest1589266-21kworker/u16:4+events_unbound11:32:394
1007042992523,2cyclictest1337197-21kworker/u16:0+events_unbound11:11:414
1007042992523,2cyclictest1337197-21kworker/u16:0+events_unbound10:25:064
1007042992523,2cyclictest1337197-21kworker/u16:0+events_unbound10:24:154
1007042992523,2cyclictest1281598-21kworker/u16:2+events_unbound09:44:144
1007042992523,2cyclictest1281598-21kworker/u16:2+events_unbound09:25:384
1007042992523,2cyclictest1127224-21kworker/u16:1+events_unbound09:31:104
1007042992522,2cyclictest1627282-21kworker/u16:5+flush-8:012:24:574
1007042992521,3cyclictest1614988-21kworker/u16:3+events_unbound11:55:204
1007042992422,2cyclictest1367664-21kworker/u16:3+flush-8:010:35:584
1007042992422,2cyclictest1337197-21kworker/u16:0+events_unbound10:12:464
1007042992422,2cyclictest1006807-21kworker/u16:2+events_unbound07:15:214
100705399230,21cyclictest645-21systemd-journal10:39:567
100705399230,21cyclictest1256347-21latency_hist09:14:577
1007042992321,2cyclictest1551453-21kworker/u16:2+events_unbound11:15:064
1007042992321,2cyclictest1127224-21kworker/u16:1+events_unbound09:56:034
1007042992321,2cyclictest1127224-21kworker/u16:1+events_unbound09:24:104
1007047992220,2cyclictest1367664-21kworker/u16:3+events_unbound10:25:245
1007047992220,2cyclictest1127224-21kworker/u16:1+events_unbound09:50:275
1007047992219,2cyclictest1664341-21kworker/u16:1+flush-8:012:15:135
1007047992219,2cyclictest1614988-21kworker/u16:3+flush-8:011:50:025
1007042992220,2cyclictest1664341-21kworker/u16:1+events_unbound12:16:304
1007042992220,2cyclictest1234679-21kworker/u16:3+events_unbound09:10:434
1007042992218,3cyclictest1147283-21kworker/u16:0+flush-8:008:20:164
1007042992119,2cyclictest968238-21kworker/u16:4+flush-8:007:10:224
1007042992119,2cyclictest1612278-21kworker/u16:1+events_unbound11:41:024
1007047992019,1cyclictest1337197-21kworker/u16:0+events_unbound12:00:135
1007047992018,2cyclictest987446-21kworker/u16:0+flush-8:007:30:125
1007047992018,2cyclictest1429457-21kworker/u16:2+flush-8:010:45:175
1007047992018,2cyclictest1429457-21kworker/u16:2+flush-8:010:40:395
1007047992018,2cyclictest1337197-21kworker/u16:0+events_unbound11:58:335
1007042992018,2cyclictest1137370-21kworker/u16:2+events_unbound08:55:144
1007042992018,2cyclictest1137370-21kworker/u16:2+events_unbound08:55:144
1007042992018,2cyclictest1030503-21kworker/u16:3+events_unbound07:48:344
1007047991918,1cyclictest1701660-21kworker/u16:2+events_unbound12:35:255
1007047991917,2cyclictest1491210-21kworker/u16:5+flush-8:010:50:245
1007047991917,2cyclictest1337197-21kworker/u16:0+flush-8:012:10:175
1007042991917,2cyclictest1030503-21kworker/u16:3+flush-8:007:30:264
1007053991813,4cyclictest1367628-21latency_hist09:59:577
100705399180,17cyclictest0-21swapper/710:25:187
100705399180,16cyclictest1274-21snmpd09:36:377
1007047991816,2cyclictest1337197-21kworker/u16:0+events_unbound10:38:355
1007047991816,2cyclictest1281598-21kworker/u16:2+events_unbound10:05:245
1007047991816,2cyclictest1281598-21kworker/u16:2+events_unbound10:00:545
1007047991816,2cyclictest1098249-21kworker/u16:4+events_unbound08:40:155
1007053991715,1cyclictest1088492-21awk07:49:577
1007053991712,4cyclictest645-21systemd-journal12:14:567
1007053991712,4cyclictest645-21systemd-journal08:09:577
1007047991715,2cyclictest987446-21kworker/u16:0+flush-8:007:24:575
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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