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2026-05-28 - 18:15
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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 Thu May 28, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227438425545,7sleep40-21swapper/407:07:004
2274695994136,4cyclictest2593385-21latency_hist09:42:067
22734932403,31sleep70-21swapper/707:02:387
227436623929,7sleep50-21swapper/507:06:455
2274690993836,2cyclictest2773691-21kworker/u16:4+flush-8:010:57:416
2274690993735,2cyclictest2460863-21kworker/u16:2+events_unbound09:23:416
2274690993432,2cyclictest2773691-21kworker/u16:4+events_unbound11:50:346
2274690993432,2cyclictest2773691-21kworker/u16:4+events_unbound11:50:346
2274690993432,2cyclictest2651382-21kworker/u16:3+events_unbound10:45:536
227413923424,7sleep60-21swapper/607:03:336
2274690993331,2cyclictest2786476-21kworker/u16:0+events_unbound11:08:416
2274690993331,2cyclictest2460863-21kworker/u16:2+flush-8:009:36:376
2274690993230,2cyclictest2786476-21kworker/u16:0+events_unbound11:24:176
2274690993230,2cyclictest2630059-21kworker/u16:0+events_unbound10:30:416
2274690993230,2cyclictest2630059-21kworker/u16:0+events_unbound10:30:416
2274685993229,3cyclictest2773691-21kworker/u16:4+flush-8:012:07:214
2274690993129,2cyclictest2952865-21kworker/u16:1+events_unbound12:31:416
2274690993129,2cyclictest2895359-21kworker/u16:3+flush-8:011:58:166
2274690993129,2cyclictest2773691-21kworker/u16:4+events_unbound12:12:126
2274690993129,2cyclictest2773691-21kworker/u16:4+events_unbound11:14:176
2274690993029,1cyclictest2630059-21kworker/u16:0+flush-8:010:11:576
2274690993028,2cyclictest2786476-21kworker/u16:0+flush-8:011:56:446
2274690993028,2cyclictest2786476-21kworker/u16:0+flush-8:011:41:336
2274690993028,2cyclictest2508969-21kworker/u16:1+flush-8:009:07:576
2274690993027,2cyclictest2460863-21kworker/u16:2+events_unbound09:27:086
30013382290,0sleep73001337-21rm12:28:137
2274690992927,2cyclictest2773691-21kworker/u16:4+events_unbound11:19:056
2274690992927,2cyclictest2508969-21kworker/u16:1+events_unbound09:57:416
2274690992927,2cyclictest2508969-21kworker/u16:1+events_unbound09:37:576
2274685992926,2cyclictest2630059-21kworker/u16:0+events_unbound09:57:214
2274695992823,4cyclictest2441673-21latency_hist08:32:067
2274695992823,4cyclictest2441673-21latency_hist08:32:067
2274690992826,2cyclictest2870875-21kworker/u16:2+events_unbound11:45:416
2274690992826,2cyclictest2786476-21kworker/u16:0+flush-8:012:19:366
2274690992825,2cyclictest2630059-21kworker/u16:0+events_unbound10:22:246
2274685992826,2cyclictest2201862-21kworker/u16:0+flush-8:007:22:204
2274695992722,4cyclictest2605482-21latency_hist09:47:067
2274690992725,2cyclictest2952865-21kworker/u16:1+flush-8:012:34:486
2274690992725,2cyclictest2952865-21kworker/u16:1+events_unbound12:25:166
2274690992725,2cyclictest2895359-21kworker/u16:3+flush-8:012:04:046
2274690992725,2cyclictest2630059-21kworker/u16:0+flush-8:010:18:166
2274690992725,2cyclictest2460863-21kworker/u16:2+events_unbound09:48:286
2274690992725,2cyclictest2460863-21kworker/u16:2+events_unbound09:48:286
2274685992725,2cyclictest2651382-21kworker/u16:3+flush-8:011:17:294
2274685992725,2cyclictest2651382-21kworker/u16:3+events_unbound11:07:294
2274690992624,2cyclictest2713577-21kworker/u16:2+flush-8:010:33:326
2274690992624,2cyclictest2651382-21kworker/u16:3+events_unbound10:16:426
2274690992624,2cyclictest2460863-21kworker/u16:2+events_unbound09:13:336
2274690992624,2cyclictest2460863-21kworker/u16:2+events_unbound09:13:336
2274690992623,2cyclictest2508969-21kworker/u16:1+flush-8:009:42:076
2274685992624,2cyclictest2773691-21kworker/u16:4+flush-8:011:57:364
2274690992523,2cyclictest2786476-21kworker/u16:0+events_unbound11:33:366
2274690992523,2cyclictest2773691-21kworker/u16:4+flush-8:012:10:446
2274690992523,2cyclictest2591081-21kworker/u16:3+events_unbound09:56:296
2274685992523,2cyclictest2952865-21kworker/u16:1+flush-8:012:32:344
2274690992422,2cyclictest2786476-21kworker/u16:0+events_unbound11:28:086
2274690992422,2cyclictest2651382-21kworker/u16:3+events_unbound10:03:096
2274690992422,2cyclictest2508969-21kworker/u16:1+flush-8:009:21:576
2274690992422,2cyclictest2460863-21kworker/u16:2+events_unbound08:57:206
2274690992422,2cyclictest2383728-21kworker/u16:1+flush-8:008:32:066
2274690992422,2cyclictest2383728-21kworker/u16:1+flush-8:008:32:066
2274685992420,3cyclictest2383728-21kworker/u16:1+flush-8:008:07:364
2274690992321,2cyclictest2630059-21kworker/u16:0+flush-8:010:50:216
2274690992221,1cyclictest2630059-21kworker/u16:0+events_unbound10:54:496
2274686992215,6cyclictest2731876-21kthreadcore10:37:245
2274686992119,2cyclictest2508969-21kworker/u16:1+flush-8:009:53:085
2274690992017,2cyclictest2460863-21kworker/u16:2+flush-8:009:02:066
2274690991917,2cyclictest2651382-21kworker/u16:3+events_unbound11:04:046
2274690991917,2cyclictest2227365-21kworker/u16:1+events_unbound07:31:426
2274690991917,2cyclictest2201862-21kworker/u16:0+flush-8:007:22:326
2274685991917,2cyclictest2895359-21kworker/u16:3+events_unbound12:02:204
2274695991814,3cyclictest1234-21snmpd10:55:137
2274695991812,5cyclictest635-21systemd-journal09:12:067
2274695991812,5cyclictest635-21systemd-journal09:12:067
2274690991816,2cyclictest2336018-21kworker/u16:2+events_unbound07:58:186
2274685991816,2cyclictest2460863-21kworker/u16:2+events_unbound08:47:204
2274695991712,4cyclictest635-21systemd-journal11:17:007
227469599170,15cyclictest124-21kswapd011:27:277
2274690991715,2cyclictest2713577-21kworker/u16:2+flush-8:010:38:246
2274690991715,2cyclictest2460863-21kworker/u16:2+events_unbound08:42:236
2274690991715,2cyclictest2336018-21kworker/u16:2+events_unbound08:03:176
2274685991715,2cyclictest2383728-21kworker/u16:1+events_unbound08:37:204
227469599160,14cyclictest0-21swapper/712:07:307
227469599160,14cyclictest0-21swapper/711:32:297
227468699160,15cyclictest0-21swapper/509:12:255
227468699160,15cyclictest0-21swapper/509:12:255
227468699160,14cyclictest0-21swapper/509:28:585
2274685991614,2cyclictest2460863-21kworker/u16:2+flush-8:009:32:324
2274685991612,3cyclictest2404481-21iostat_ios08:12:214
227468599160,15cyclictest2602669-21switchtime09:42:344
2274695991512,2cyclictest0-21swapper/709:47:067
2274695991512,2cyclictest0-21swapper/709:47:067
2274695991510,4cyclictest2297596-21latency_hist07:17:077
227469599150,14cyclictest2689119-21ssh10:20:427
227469599150,13cyclictest2508928-21diskmemload11:02:287
227469599150,13cyclictest0-21swapper/711:22:297
2274690991513,2cyclictest2383728-21kworker/u16:1+flush-8:008:39:176
2274690991513,2cyclictest2383728-21kworker/u16:1+flush-8:008:12:306
2274686991513,2cyclictest0-21swapper/511:48:305
2274686991513,2cyclictest0-21swapper/511:48:305
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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