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2026-03-15 - 14:18
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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 Sun Mar 15, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25832912970,1sleep72583289-21awk08:38:467
2398111996256,5cyclictest2611882-21latency_hist08:53:467
2398106996157,3cyclictest3016048-21kworker/u16:2+flush-8:011:58:465
30924612550,0sleep73092462-21cat12:14:067
239759125343,7sleep40-21swapper/407:00:294
2398108994947,2cyclictest2631052-21kworker/u16:0+events_unbound09:44:166
239755324838,7sleep60-21swapper/606:59:596
2398108994543,2cyclictest3085087-21kworker/u16:3+flush-8:012:09:186
2398108994543,2cyclictest2370536-21kworker/u16:2+flush-8:007:29:136
2398108994543,2cyclictest2370536-21kworker/u16:2+flush-8:007:29:136
239767524534,8sleep50-21swapper/507:01:425
239811199440,42cyclictest2655054-21latency_hist09:13:477
2398108994442,2cyclictest2898453-21kworker/u16:3+flush-8:011:09:216
2398108994442,2cyclictest2847887-21kworker/u16:2+events_unbound10:49:176
2398108994442,2cyclictest2751289-21kworker/u16:1+events_unbound10:46:236
26732722430,1sleep60-21swapper/609:19:086
2398111994337,5cyclictest2468653-21latency_hist07:38:477
2398108994341,2cyclictest2847887-21kworker/u16:2+flush-8:010:59:146
2398106994340,2cyclictest3098775-21kworker/u16:2+flush-8:012:33:415
2398108994240,2cyclictest2978132-21kworker/u16:0+events_unbound11:30:146
2398108994139,2cyclictest3040516-21kworker/u16:3+events_unbound11:54:416
2398108994139,2cyclictest2458893-21kworker/u16:3+events_unbound08:04:176
23976032415,31sleep70-21swapper/707:00:407
2398108994038,2cyclictest3085087-21kworker/u16:3+events_unbound12:14:246
2398108994038,2cyclictest2847887-21kworker/u16:2+flush-8:010:39:156
2398111993933,5cyclictest650-21systemd-journal11:38:467
2398111993933,5cyclictest3028057-21latency_hist11:48:467
2398108993937,2cyclictest3016048-21kworker/u16:2+events_unbound12:02:216
2398108993937,2cyclictest2832419-21kworker/u16:3+flush-8:010:28:466
2398108993937,2cyclictest2751289-21kworker/u16:1+flush-8:010:34:166
2398111993833,4cyclictest2943675-21latency_hist11:13:467
2398108993836,2cyclictest3016048-21kworker/u16:2+flush-8:011:44:376
2398108993836,2cyclictest2992092-21kworker/u16:1+events_unbound11:36:096
2398108993836,2cyclictest2847887-21kworker/u16:2+events_unbound11:20:376
2398108993836,2cyclictest2370536-21kworker/u16:2+events_unbound09:32:586
2398108993836,2cyclictest2370536-21kworker/u16:2+events_unbound09:26:086
2398108993835,2cyclictest2787901-21kworker/u16:0+flush-8:010:28:516
2398106993836,2cyclictest2751289-21kworker/u16:1+flush-8:010:49:235
2398101993836,2cyclictest3016048-21kworker/u16:2+flush-8:011:59:174
2398108993735,2cyclictest3098775-21kworker/u16:2+events_unbound12:26:076
2398108993735,2cyclictest2751289-21kworker/u16:1+events_unbound10:10:476
2398108993735,2cyclictest2631052-21kworker/u16:0+events_unbound09:41:526
2398106993734,2cyclictest2898453-21kworker/u16:3+flush-8:011:18:465
2398106993733,3cyclictest2370536-21kworker/u16:2+flush-8:007:49:185
239811199360,34cyclictest124-21kswapd011:25:477
2398108993634,2cyclictest2992092-21kworker/u16:1+events_unbound12:29:306
2398108993634,2cyclictest2751289-21kworker/u16:1+events_unbound10:20:356
2398108993634,2cyclictest2751289-21kworker/u16:1+events_unbound10:01:246
2398108993634,2cyclictest2370536-21kworker/u16:2+events_unbound09:14:166
2398111993531,3cyclictest2554755-21sed08:23:467
2398108993533,2cyclictest2978132-21kworker/u16:0+events_unbound12:23:316
2398108993533,2cyclictest2898453-21kworker/u16:3+events_unbound11:07:066
2398108993533,2cyclictest2898453-21kworker/u16:3+events_unbound10:56:096
2398108993533,2cyclictest2898453-21kworker/u16:3+events_unbound10:56:096
2398108993533,2cyclictest2554479-21kworker/u16:3+flush-8:008:29:146
2398108993532,2cyclictest2458893-21kworker/u16:3+events_unbound07:49:006
2398108993532,2cyclictest2370536-21kworker/u16:2+flush-8:008:38:576
2398106993533,2cyclictest2397866-21kworker/u16:1+flush-8:007:19:185
2398106993532,2cyclictest2370536-21kworker/u16:2+events_unbound09:24:015
2398101993532,2cyclictest2856235-21kworker/u16:4+flush-8:010:34:584
2398108993432,2cyclictest2898453-21kworker/u16:3+events_unbound11:16:356
2398108993331,2cyclictest2978481-21kworker/u16:6+events_unbound11:41:126
2398108993331,2cyclictest2787901-21kworker/u16:0+events_unbound10:14:536
2398108993331,2cyclictest2787901-21kworker/u16:0+events_unbound10:14:536
2398108993331,2cyclictest2772284-21kworker/u16:4+events_unbound10:08:116
2398108993331,2cyclictest2751289-21kworker/u16:1+events_unbound11:25:266
2398108993331,2cyclictest2487924-21kworker/u16:0+events_unbound08:11:586
2398108993331,2cyclictest2370536-21kworker/u16:2+flush-8:009:34:146
2398108993331,2cyclictest2370536-21kworker/u16:2+flush-8:009:34:146
2398106993330,2cyclictest2370536-21kworker/u16:2+flush-8:009:49:045
2398101993332,1cyclictest2978132-21kworker/u16:0+events_unbound11:44:554
2398101993330,2cyclictest2772284-21kworker/u16:4+flush-8:010:08:424
2398108993230,2cyclictest3016048-21kworker/u16:2+events_unbound12:05:116
2398108993230,2cyclictest2992092-21kworker/u16:1+events_unbound11:50:516
2398108993230,2cyclictest2677868-21kworker/u16:3+flush-8:009:54:206
2398108993230,2cyclictest2677868-21kworker/u16:3+events_unbound09:48:486
2398108993230,2cyclictest2397866-21kworker/u16:1+events_unbound07:43:476
2398108993230,2cyclictest2370536-21kworker/u16:2+events_unbound09:09:126
2398108993230,2cyclictest2370536-21kworker/u16:2+events_unbound08:00:186
2398106993230,2cyclictest2370536-21kworker/u16:2+flush-8:008:44:135
2398108993129,2cyclictest2487924-21kworker/u16:0+events_unbound08:46:576
29936372300,1chrt0-21swapper/411:34:034
2398108993028,2cyclictest2397866-21kworker/u16:1+events_unbound07:45:586
2398108993028,2cyclictest2397866-21kworker/u16:1+events_unbound07:28:276
2398108993028,2cyclictest2370536-21kworker/u16:2+flush-8:009:04:126
25982912290,1chrt2598292-21kthreadcore08:44:077
2398108992927,2cyclictest2602365-21kworker/u16:1+events_unbound08:52:236
2398108992927,2cyclictest2458893-21kworker/u16:3+events_unbound07:57:036
2398108992927,2cyclictest2370536-21kworker/u16:2+events_unbound07:38:026
2398108992926,2cyclictest2370536-21kworker/u16:2+events_unbound08:59:026
27795892280,1chrt2779590-21kthreadcore10:04:067
2398108992826,2cyclictest2487924-21kworker/u16:0+events_unbound08:25:586
2398108992826,2cyclictest2397866-21kworker/u16:1+events_unbound07:20:466
2398106992826,2cyclictest2898453-21kworker/u16:3+flush-8:011:25:515
2398106992826,2cyclictest2847887-21kworker/u16:2+flush-8:010:58:415
2398106992826,2cyclictest2847887-21kworker/u16:2+flush-8:010:58:415
2398106992826,2cyclictest2612272-21kworker/u16:3+flush-8:008:58:415
28814872270,1chrt2881485-21ssh10:44:537
27021092270,1chrt2702110-21ssh09:31:447
2398108992725,2cyclictest875378-21kworker/u16:3+events_unbound07:08:066
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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