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2026-03-27 - 14:06
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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 Mar 27, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1162415995751,5cyclictest1565324-21latency_hist10:12:587
116196025545,7sleep50-21swapper/507:00:545
116191225242,7sleep40-21swapper/407:00:134
1162411995048,2cyclictest1328432-21kworker/u16:5+flush-8:010:08:296
1162405995047,2cyclictest1591320-21kworker/u16:3+flush-8:011:22:594
1162411994846,2cyclictest1794763-21kworker/u16:2+events_unbound12:27:056
1162411994846,2cyclictest1794763-21kworker/u16:2+events_unbound12:27:056
16335972470,0sleep71633599-21cut10:38:197
116187724737,7sleep60-21swapper/606:59:436
1162411994644,2cyclictest1551797-21kworker/u16:2+events_unbound10:40:046
1162411994642,3cyclictest430325-21kworker/u16:0+flush-8:007:32:596
1162411994642,3cyclictest430325-21kworker/u16:0+flush-8:007:32:596
1162415994539,5cyclictest1686113-21latency_hist11:02:587
1162415994539,5cyclictest1686113-21latency_hist11:02:587
1162411994543,2cyclictest1816813-21kworker/u16:3+events_unbound11:55:166
1162411994543,2cyclictest1493126-21kworker/u16:1+events_unbound10:03:236
1162411994442,2cyclictest1721753-21kworker/u16:1+events_unbound11:52:496
1162411994341,2cyclictest1591320-21kworker/u16:3+events_unbound10:52:526
1162411994341,2cyclictest1551797-21kworker/u16:2+events_unbound10:21:246
1162411994341,2cyclictest1551797-21kworker/u16:2+events_unbound10:21:246
1162411994240,2cyclictest1794763-21kworker/u16:2+flush-8:012:28:326
1162411994240,2cyclictest1770777-21kworker/u16:0+events_unbound12:14:256
1162411994240,2cyclictest1721753-21kworker/u16:1+events_unbound11:19:136
1162411994240,2cyclictest1637937-21kworker/u16:0+events_unbound11:12:486
1162411994240,2cyclictest1591320-21kworker/u16:3+events_unbound10:34:496
1162411994240,2cyclictest1328432-21kworker/u16:5+events_unbound09:39:296
1162411994240,2cyclictest1328432-21kworker/u16:5+events_unbound09:39:296
1162411994139,2cyclictest1770777-21kworker/u16:0+events_unbound12:11:166
1162411994139,2cyclictest1770777-21kworker/u16:0+events_unbound11:46:526
1162411994139,2cyclictest1432563-21kworker/u16:0+events_unbound09:24:416
1162411994038,2cyclictest1770777-21kworker/u16:0+events_unbound12:06:346
1162411994038,2cyclictest1662311-21kworker/u16:2+events_unbound10:59:486
1162411994038,2cyclictest1662311-21kworker/u16:2+events_unbound10:59:486
1162411994038,2cyclictest1637937-21kworker/u16:0+events_unbound10:53:056
1162411994038,2cyclictest1591320-21kworker/u16:3+events_unbound10:44:126
1162411994038,2cyclictest1551797-21kworker/u16:2+events_unbound10:24:166
1162411994038,2cyclictest1493126-21kworker/u16:1+events_unbound09:56:096
1162411994038,2cyclictest1432563-21kworker/u16:0+events_unbound09:21:346
1162411994038,2cyclictest1319358-21kworker/u16:3+events_unbound09:07:496
11618872404,31sleep70-21swapper/706:59:527
1162415993938,0cyclictest0-21swapper/712:03:487
1162411993937,2cyclictest1830928-21kworker/u16:1+events_unbound12:20:176
1162411993937,2cyclictest1816813-21kworker/u16:3+events_unbound12:02:286
1162411993937,2cyclictest1721753-21kworker/u16:1+events_unbound11:25:456
1162411993937,2cyclictest1591320-21kworker/u16:3+events_unbound11:14:046
1162411993937,2cyclictest1493126-21kworker/u16:1+events_unbound10:16:466
1162411993937,2cyclictest1493126-21kworker/u16:1+events_unbound10:00:026
1162411993937,2cyclictest1444248-21kworker/u16:2+events_unbound09:51:106
1162411993937,2cyclictest1432563-21kworker/u16:0+events_unbound09:36:136
1162411993937,2cyclictest1357888-21kworker/u16:1+events_unbound09:16:006
1162411993936,2cyclictest1404891-21kworker/u16:2+flush-8:009:08:096
1162405993936,3cyclictest1319358-21kworker/u16:3+flush-8:009:12:544
1162411993836,2cyclictest1770777-21kworker/u16:0+events_unbound11:42:226
1162411993836,2cyclictest1770777-21kworker/u16:0+events_unbound11:42:226
1162411993836,2cyclictest1637937-21kworker/u16:0+events_unbound11:03:426
1162411993836,2cyclictest1591320-21kworker/u16:3+events_unbound10:32:186
1162415993731,5cyclictest650-21systemd-journal07:27:587
1162411993735,2cyclictest1591320-21kworker/u16:3+events_unbound11:36:176
1162411993735,2cyclictest1444248-21kworker/u16:2+events_unbound09:46:336
1162411993634,2cyclictest1328432-21kworker/u16:5+events_unbound09:29:096
1162408993633,2cyclictest1637937-21kworker/u16:0+flush-8:011:12:585
1162405993634,2cyclictest1637937-21kworker/u16:0+flush-8:010:53:284
1162415993531,3cyclictest1823057-21tr11:58:187
1162411993533,2cyclictest1591320-21kworker/u16:3+events_unbound11:31:166
1162411993533,2cyclictest1319358-21kworker/u16:3+flush-8:008:30:346
1162405993533,2cyclictest1444248-21kworker/u16:2+events_unbound09:33:214
1162405993532,3cyclictest1328432-21kworker/u16:5+events_unbound10:08:144
1162415993428,5cyclictest1806790-21latency_hist11:52:587
1162411993431,2cyclictest1357888-21kworker/u16:1+flush-8:008:43:226
1162405993431,2cyclictest1591320-21kworker/u16:3+events_unbound10:28:124
116241599320,31cyclictest1432139-21latency_hist09:17:597
1162405993229,2cyclictest1577436-21kworker/u16:0+flush-8:010:22:584
1162405993229,2cyclictest1577436-21kworker/u16:0+flush-8:010:22:584
1162415993131,0cyclictest0-21swapper/711:05:247
1162415993130,0cyclictest0-21swapper/711:54:027
1162415993126,4cyclictest1328287-21pool-gnome-soft08:24:597
1162415993030,0cyclictest0-21swapper/711:14:597
1162415993028,1cyclictest1395801-21diskmemload10:35:327
1162405993028,2cyclictest1591320-21kworker/u16:3+events_unbound10:58:244
1162405993028,2cyclictest1591320-21kworker/u16:3+events_unbound10:58:244
19009732290,1chrt1900971-21ssh12:28:477
1162415992928,0cyclictest0-21swapper/708:01:137
1162411992927,2cyclictest1252282-21kworker/u16:2+events_unbound07:57:106
1162411992927,2cyclictest1204330-21kworker/u16:1+events_unbound07:33:226
1162408992928,1cyclictest1432563-21kworker/u16:0+events_unbound09:38:245
1162408992928,1cyclictest1432563-21kworker/u16:0+events_unbound09:38:245
1162415992827,0cyclictest0-21swapper/709:28:467
14135492270,0sleep50-21swapper/509:08:175
1162415992726,0cyclictest0-21swapper/708:55:387
1162415992726,0cyclictest0-21swapper/708:07:227
1162415992725,1cyclictest1490253-21ssh09:38:327
1162415992725,1cyclictest1490253-21ssh09:38:327
1162411992725,2cyclictest1252282-21kworker/u16:2+events_unbound08:14:106
1162405992725,2cyclictest1721753-21kworker/u16:1+flush-8:011:33:094
1162405992725,2cyclictest1432563-21kworker/u16:0+events_unbound09:38:284
1162405992725,2cyclictest1432563-21kworker/u16:0+events_unbound09:38:284
15451732260,1chrt1545068-21ssh10:03:177
1162415992625,0cyclictest0-21swapper/708:59:507
1162415992625,0cyclictest0-21swapper/708:59:507
1162415992625,0cyclictest0-21swapper/707:41:137
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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