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2026-06-18 - 12:25
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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 Jun 18, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25859702960,1sleep72392798-21cyclictest20:45:157
239240025217,30sleep70-21swapper/719:08:067
239244525141,7sleep50-21swapper/519:08:445
239229524434,7sleep40-21swapper/419:06:354
27359772410,0sleep40-21swapper/421:50:194
28598562330,1chrt2859858-21sh22:41:117
2392810993230,2cyclictest2416422-21kworker/u16:2+flush-8:019:30:116
2392813992726,0cyclictest0-21swapper/723:48:167
28485342260,1chrt2848533-21ssh22:37:427
2392813992625,0cyclictest0-21swapper/722:23:587
2392813992625,0cyclictest0-21swapper/700:18:167
2392813992624,1cyclictest2714821-21ssh21:43:517
2392813992623,2cyclictest3006670-21ssh23:41:497
2392813992623,2cyclictest2738658-21ssh21:52:427
2392803992621,4cyclictest2654287-21latency_hist21:19:574
2392813992524,0cyclictest0-21swapper/722:11:207
2392813992523,1cyclictest0-21swapper/721:09:587
2392813992521,3cyclictest2994443-21ssh23:36:447
239225922514,8sleep60-21swapper/619:06:046
2392813992424,0cyclictest0-21swapper/721:14:447
2392813992423,0cyclictest0-21swapper/722:16:177
2392813992423,0cyclictest0-21swapper/722:07:127
2392813992420,3cyclictest2896317-21ssh22:55:587
239281399240,22cyclictest5934-21gnome-shell00:00:067
239281399240,22cyclictest5934-21gnome-shell00:00:067
2392810992422,2cyclictest3057224-21kworker/u16:3+events_unbound00:10:156
2392813992322,0cyclictest0-21swapper/723:16:567
2392813992322,0cyclictest0-21swapper/723:01:187
2392813992322,0cyclictest0-21swapper/722:27:417
2392813992322,0cyclictest0-21swapper/722:04:207
2392813992322,0cyclictest0-21swapper/722:04:207
2392813992322,0cyclictest0-21swapper/721:26:537
2392813992322,0cyclictest0-21swapper/721:16:047
2392813992322,0cyclictest0-21swapper/700:09:407
2392813992322,0cyclictest0-21swapper/700:09:407
2392813992321,1cyclictest3117344-21ssh00:28:347
2392813992321,1cyclictest2836808-21ssh22:33:377
2392813992321,1cyclictest0-21swapper/721:39:507
2392813992320,2cyclictest2750665-21ssh21:57:187
2392813992221,0cyclictest0-21swapper/700:31:577
2392813992220,1cyclictest2727134-21ssh21:49:047
2392813992220,1cyclictest2727134-21ssh21:49:047
2392810992220,2cyclictest2837935-21kworker/u16:0+flush-8:000:05:136
2392810992220,2cyclictest2837935-21kworker/u16:0+flush-8:000:05:136
2392810992217,4cyclictest2935112-21latency_hist23:14:576
2392813992120,0cyclictest0-21swapper/723:26:157
2392813992120,0cyclictest0-21swapper/723:13:257
2392813992120,0cyclictest0-21swapper/723:07:227
2392813992119,1cyclictest2690975-21ssh21:34:577
2392810992118,2cyclictest2823324-21kworker/u16:1+flush-8:022:30:146
2392810992117,3cyclictest2727667-21kworker/u16:3+flush-8:022:34:586
2392803992116,4cyclictest2678842-21cat21:29:574
31035852200,1chrt3103586-21sh00:20:407
2392813992019,0cyclictest0-21swapper/723:54:377
2392813992019,0cyclictest0-21swapper/723:21:437
2392813992019,0cyclictest0-21swapper/721:22:357
2392813992019,0cyclictest0-21swapper/700:12:097
2392810992018,2cyclictest2837935-21kworker/u16:0+flush-8:023:25:266
2392810992018,2cyclictest2727668-21kworker/u16:4+flush-8:021:54:526
2392810992018,2cyclictest2680015-21kworker/u16:0+flush-8:021:45:136
2392810992018,2cyclictest2680015-21kworker/u16:0+flush-8:021:45:136
2392810992018,2cyclictest2402741-21kworker/u16:3+events_unbound19:25:176
2392813991918,0cyclictest0-21swapper/722:46:507
2392813991917,1cyclictest0-21swapper/700:37:107
2392810991917,2cyclictest2727668-21kworker/u16:4+events_unbound22:19:526
2392813991817,0cyclictest0-21swapper/723:56:487
2392813991817,0cyclictest0-21swapper/723:32:547
2392813991817,0cyclictest0-21swapper/722:53:027
2392813991815,2cyclictest1278-21snmpd20:43:167
2392810991814,3cyclictest2813313-21cat22:24:586
2392813991716,0cyclictest0-21swapper/719:54:077
2392813991713,3cyclictest1278-21snmpd20:07:187
2392810991715,2cyclictest2416422-21kworker/u16:2+flush-8:019:20:186
2392803991713,3cyclictest2493815-21latency_hist19:59:584
2392813991615,0cyclictest0-21swapper/721:00:287
2392810991614,2cyclictest2837935-21kworker/u16:0+events_unbound00:15:246
2392807991613,2cyclictest2680647-21kthreadcore21:30:155
2392807991612,3cyclictest2571529-21latency_hist20:39:585
2392813991514,0cyclictest0-21swapper/719:45:297
2392813991514,0cyclictest0-21swapper/719:15:137
2392810991514,1cyclictest0-21swapper/623:52:516
2392810991513,2cyclictest3043360-21kworker/u16:1+events_unbound00:00:046
2392810991513,2cyclictest3043360-21kworker/u16:1+events_unbound00:00:046
2392810991513,2cyclictest2837935-21kworker/u16:0+events_unbound23:40:106
2392810991513,2cyclictest2382602-21kworker/u16:1+flush-8:021:10:146
2392807991513,2cyclictest2402741-21kworker/u16:3+flush-8:019:15:255
2392807991510,4cyclictest2800919-21latency_hist22:19:585
2392807991510,4cyclictest2666563-21latency_hist21:24:575
239280799150,14cyclictest0-21swapper/500:15:095
239281399148,5cyclictest6341-21gvfs-afc-volume20:55:227
2392813991413,0cyclictest0-21swapper/720:28:097
2392813991413,0cyclictest0-21swapper/719:37:077
2392813991412,1cyclictest0-21swapper/719:40:207
239281399140,1cyclictest0-21swapper/720:30:207
239281099148,5cyclictest851ktimers/621:15:186
239281099145,8cyclictest2382602-21kworker/u16:1+flush-8:021:00:156
2392810991413,1cyclictest0-21swapper/622:43:376
2392810991413,1cyclictest0-21swapper/621:42:276
2392810991412,2cyclictest2837935-21kworker/u16:0+flush-8:023:05:236
2392810991412,2cyclictest2680015-21kworker/u16:0+flush-8:022:25:156
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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