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2026-05-15 - 18:07
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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 May 15, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25153582980,1sleep72515361-21kthreadcore11:23:217
194277827243,8sleep40-21swapper/407:06:204
19563402640,1sleep60-21swapper/607:13:026
1943208995350,2cyclictest1942948-21kworker/u16:3+flush-8:007:48:135
1943208995250,2cyclictest2300262-21kworker/u16:3+events_unbound09:58:145
1943208995148,2cyclictest1994671-21kworker/u16:0+flush-8:007:58:135
1943208995048,2cyclictest2287809-21kworker/u16:2+events_unbound10:18:295
1943208994947,2cyclictest2471701-21kworker/u16:2+events_unbound11:13:205
1943208994947,2cyclictest2287809-21kworker/u16:2+events_unbound10:08:315
1943208994946,2cyclictest2300262-21kworker/u16:3+events_unbound10:42:595
1943208994846,2cyclictest2287809-21kworker/u16:2+flush-8:010:13:275
1943208994744,2cyclictest2050234-21kworker/u16:1+events_unbound08:38:125
1943213994641,4cyclictest2496231-21latency_hist11:17:587
1943208994644,2cyclictest2110695-21kworker/u16:2+events_unbound09:18:305
1943208994643,2cyclictest2630309-21kworker/u16:0+events_unbound12:18:135
1943208994643,2cyclictest2110695-21kworker/u16:2+events_unbound09:33:275
1943208994643,2cyclictest1994671-21kworker/u16:0+flush-8:008:43:145
19417852453,34sleep70-21swapper/707:03:267
1943208994442,2cyclictest2484035-21kworker/u16:1+events_unbound11:23:205
1943208994442,2cyclictest2110695-21kworker/u16:2+events_unbound08:53:115
1943208994341,2cyclictest2583315-21kworker/u16:3+events_unbound12:33:125
1943208994341,2cyclictest2110695-21kworker/u16:2+flush-8:008:48:255
1943208994341,2cyclictest2004718-21kworker/u16:4+events_unbound08:03:135
194279724333,7sleep50-21swapper/507:06:375
1943208994240,2cyclictest2300262-21kworker/u16:3+events_unbound10:57:585
1943208994240,2cyclictest2300262-21kworker/u16:3+events_unbound10:29:205
1943213994140,0cyclictest0-21swapper/709:03:267
1943213994140,0cyclictest0-21swapper/709:03:267
1943208994139,2cyclictest2583315-21kworker/u16:3+events_unbound12:09:045
1943208994139,2cyclictest2567146-21kworker/u16:0+events_unbound11:48:295
1943208994139,2cyclictest2567146-21kworker/u16:0+events_unbound11:48:295
1943208994139,2cyclictest2004718-21kworker/u16:4+flush-8:007:43:275
1943208994038,2cyclictest2300262-21kworker/u16:3+flush-8:010:23:285
1943208994038,2cyclictest1879246-21kworker/u16:1+events_unbound07:28:245
1943208993937,2cyclictest2471701-21kworker/u16:2+events_unbound11:59:125
1943203993936,2cyclictest2655614-21kworker/u16:2+flush-8:012:32:574
1943203993936,2cyclictest2655614-21kworker/u16:2+flush-8:012:32:574
1943213993832,5cyclictest2071945-21latency_hist08:12:587
1943208993836,2cyclictest2484035-21kworker/u16:1+events_unbound11:20:115
1943208993836,2cyclictest2386140-21kworker/u16:4+events_unbound10:50:035
1943208993836,2cyclictest2129745-21kworker/u16:3+events_unbound09:09:365
1943208993836,2cyclictest1942948-21kworker/u16:3+flush-8:007:23:145
26585302370,1chrt0-21swapper/612:23:156
1943208993735,2cyclictest2445295-21kworker/u16:0+events_unbound11:11:045
1943208993735,2cyclictest2386140-21kworker/u16:4+events_unbound10:34:525
1943208993634,2cyclictest2567146-21kworker/u16:0+events_unbound11:44:155
1943208993634,2cyclictest2272587-21kworker/u16:3+events_unbound09:43:525
1943208993634,2cyclictest2110695-21kworker/u16:2+events_unbound09:30:315
1943208993632,2cyclictest1868589-21kworker/u16:2+flush-8:007:13:275
22241582350,1sleep576-21ksoftirqd/509:23:305
1943213993529,5cyclictest2043097-21latency_hist07:57:587
1943208993533,2cyclictest2471701-21kworker/u16:2+events_unbound11:34:115
1943208993533,2cyclictest2287809-21kworker/u16:2+flush-8:009:53:395
1943208993432,2cyclictest2471701-21kworker/u16:2+flush-8:012:03:135
1943208993432,2cyclictest2386140-21kworker/u16:4+events_unbound10:41:215
1943208993432,2cyclictest2256885-21kworker/u16:0+events_unbound10:07:335
1943208993432,2cyclictest1994671-21kworker/u16:0+events_unbound09:14:255
1943208993331,2cyclictest2583315-21kworker/u16:3+events_unbound12:15:435
1943208993331,2cyclictest2529752-21kworker/u16:3+events_unbound11:38:515
1943208993331,2cyclictest2471701-21kworker/u16:2+events_unbound11:55:595
1943208993331,2cyclictest2110695-21kworker/u16:2+events_unbound09:42:125
1943208993331,2cyclictest1994671-21kworker/u16:0+events_unbound08:26:525
1943208993331,2cyclictest1994671-21kworker/u16:0+events_unbound08:26:525
1943210993230,2cyclictest2004718-21kworker/u16:4+flush-8:007:48:246
1943208993230,2cyclictest2655614-21kworker/u16:2+events_unbound12:29:475
1943208993230,2cyclictest2655614-21kworker/u16:2+events_unbound12:29:475
1943208993230,2cyclictest2655614-21kworker/u16:2+events_unbound12:24:365
1943208993230,2cyclictest2445295-21kworker/u16:0+events_unbound11:01:315
1943213993130,0cyclictest0-21swapper/708:30:047
1943213993126,4cyclictest2606292-21latency_hist12:02:587
1943208993130,1cyclictest1868589-21kworker/u16:2+events_unbound07:38:185
1943208993130,1cyclictest1868589-21kworker/u16:2+events_unbound07:38:185
1943208993129,2cyclictest2256885-21kworker/u16:0+events_unbound09:48:265
1943208993129,2cyclictest2129745-21kworker/u16:3+flush-8:009:03:275
1943208993129,2cyclictest2129745-21kworker/u16:3+flush-8:009:03:275
1943208993129,2cyclictest1994671-21kworker/u16:0+flush-8:007:33:145
1943208993129,2cyclictest1994671-21kworker/u16:0+events_unbound08:33:255
1943208993129,2cyclictest1994671-21kworker/u16:0+events_unbound08:28:265
1943203993129,2cyclictest2272587-21kworker/u16:3+flush-8:009:47:584
1943213993029,0cyclictest0-21swapper/710:35:397
1943213993029,0cyclictest0-21swapper/708:22:287
1943213993025,4cyclictest2483999-21latency_hist11:12:587
1943213993024,5cyclictest635-21systemd-journal09:17:587
1943208993028,2cyclictest2445295-21kworker/u16:0+events_unbound11:32:355
1943208993028,2cyclictest2424283-21kworker/u16:5+flush-8:011:03:395
1943208993028,2cyclictest2424283-21kworker/u16:5+flush-8:011:03:395
1943208993028,2cyclictest1994671-21kworker/u16:0+events_unbound08:19:525
25518272290,1chrt2551828-21kthreadcore11:38:207
1943213992928,0cyclictest0-21swapper/712:31:427
1943213992928,0cyclictest0-21swapper/712:31:427
1943213992928,0cyclictest0-21swapper/710:55:247
1943213992928,0cyclictest0-21swapper/709:44:377
1943213992928,0cyclictest0-21swapper/709:18:287
1943213992926,2cyclictest2013753-21unixbench-2d07:38:277
1943213992926,2cyclictest2013753-21unixbench-2d07:38:277
1943208992927,2cyclictest2129745-21kworker/u16:3+events_unbound08:58:535
1943208992927,2cyclictest1994671-21kworker/u16:0+flush-8:007:53:195
1943208992926,2cyclictest1994671-21kworker/u16:0+flush-8:008:08:035
1943213992825,2cyclictest2653019-21ssh12:19:027
1943213992824,3cyclictest2469634-21ssh11:04:177
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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