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2026-08-04 - 18:34
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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 Tue Aug 04, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242841225521,29sleep70-21swapper/707:08:367
2428727995145,5cyclictest3145953-21latency_hist12:23:367
2428714994743,3cyclictest2442434-21kworker/u16:2+flush-8:007:23:374
242817724737,7sleep50-21swapper/507:05:215
2428723994440,3cyclictest2636518-21kworker/u16:0+flush-8:008:54:026
2428714994442,2cyclictest2129741-21kworker/u16:0+events_unbound08:03:504
2428727994338,4cyclictest2626678-21latency_hist08:48:367
2428714994139,2cyclictest2500706-21kworker/u16:3+flush-8:008:13:544
241914824029,8sleep40-21swapper/407:03:444
2428727993934,4cyclictest2961444-21latency_hist11:08:357
2428714993936,2cyclictest2776481-21kworker/u16:4+events_unbound10:43:514
2428720993631,4cyclictest2689989-21kworker/u16:0+flush-8:010:13:365
2428714993533,2cyclictest3052565-21kworker/u16:0+events_unbound11:58:504
28442202340,1chrt2844221-21kthreadcore10:18:587
2428714993331,2cyclictest2689989-21kworker/u16:0+events_unbound10:34:094
242816023323,7sleep60-21swapper/607:05:066
2428727993231,0cyclictest0-21swapper/709:29:027
2428727993231,0cyclictest0-21swapper/708:48:377
2428714993229,2cyclictest2970598-21kworker/u16:0+flush-8:011:13:504
2428714993229,2cyclictest2970598-21kworker/u16:0+flush-8:011:13:504
2428720993129,2cyclictest2776481-21kworker/u16:4+flush-8:011:39:055
2428714992927,2cyclictest2986063-21kworker/u16:2+events_unbound11:43:494
2428714992927,2cyclictest2776481-21kworker/u16:4+flush-8:011:33:104
2428727992827,0cyclictest0-21swapper/711:56:477
2428727992827,0cyclictest0-21swapper/711:56:477
2428720992827,1cyclictest2689989-21kworker/u16:0+events_unbound09:28:355
2428714992826,2cyclictest2776481-21kworker/u16:4+events_unbound11:28:364
2428727992726,0cyclictest0-21swapper/708:56:107
2428727992726,0cyclictest0-21swapper/707:57:077
2428727992726,0cyclictest0-21swapper/707:14:097
2428714992725,2cyclictest2776481-21kworker/u16:4+events_unbound10:49:024
2428714992724,2cyclictest2986063-21kworker/u16:2+flush-8:012:03:524
2428727992625,0cyclictest0-21swapper/708:06:147
2428720992622,3cyclictest2776481-21kworker/u16:4+flush-8:010:23:365
2428714992624,2cyclictest2776481-21kworker/u16:4+events_unbound09:59:104
25091822250,0sleep50-21swapper/507:44:065
2428727992524,0cyclictest0-21swapper/708:40:267
2428727992524,0cyclictest0-21swapper/707:32:227
30136342240,1chrt3013635-21kthreadcore11:28:547
2428727992423,0cyclictest0-21swapper/708:37:347
2428727992423,0cyclictest0-21swapper/708:37:347
2428727992419,4cyclictest648-21systemd-journal10:28:367
2428714992423,1cyclictest2735574-21kworker/u16:2+events_unbound09:38:174
2428714992422,2cyclictest2714815-21kworker/u16:3+events_unbound09:39:144
2428714992422,2cyclictest2500706-21kworker/u16:3+flush-8:008:49:014
2428714992421,2cyclictest2689989-21kworker/u16:0+events_unbound09:43:384
2428727992322,0cyclictest0-21swapper/707:40:347
2428727992322,0cyclictest0-21swapper/707:34:587
2428714992322,1cyclictest2735574-21kworker/u16:2+events_unbound09:52:454
2428714992321,2cyclictest2689989-21kworker/u16:0+events_unbound10:33:304
2428714992321,2cyclictest2689989-21kworker/u16:0+events_unbound09:18:374
28842522220,1chrt2875631-21/usr/sbin/munin10:34:057
2428727992221,0cyclictest0-21swapper/710:15:197
2428727992221,0cyclictest0-21swapper/709:59:257
2428727992221,0cyclictest0-21swapper/707:26:557
2428720992219,2cyclictest2529844-21kworker/u16:4+flush-8:009:18:565
2428714992220,2cyclictest3010682-21kworker/u16:1+events_unbound12:27:184
2428714992220,2cyclictest2776481-21kworker/u16:4+events_unbound10:19:064
2428714992219,2cyclictest2735574-21kworker/u16:2+flush-8:009:53:464
2428727992120,0cyclictest0-21swapper/712:18:187
2428727992120,0cyclictest0-21swapper/711:18:287
2428727992120,0cyclictest0-21swapper/711:18:287
2428727992120,0cyclictest0-21swapper/708:16:427
2428727992120,0cyclictest0-21swapper/707:59:587
2428727992119,1cyclictest0-21swapper/710:49:217
2428714992118,2cyclictest2986063-21kworker/u16:2+events_unbound11:38:504
2428727992019,0cyclictest0-21swapper/711:42:117
2428727992019,0cyclictest0-21swapper/708:26:557
2428727992019,0cyclictest0-21swapper/707:44:077
2428727992015,4cyclictest2578048-21latency_hist08:23:367
242872799200,19cyclictest0-21swapper/709:26:197
2428723992016,3cyclictest2428430-21kworker/u16:3+flush-8:007:09:026
2428714992018,2cyclictest3096875-21kworker/u16:3+flush-8:012:08:584
2428714992018,2cyclictest2529844-21kworker/u16:4+events_unbound08:28:544
2428714992018,2cyclictest2129741-21kworker/u16:0+flush-8:007:13:544
2428714992017,2cyclictest2689989-21kworker/u16:0+events_unbound10:38:384
2428727991918,0cyclictest0-21swapper/710:57:087
2428727991918,0cyclictest0-21swapper/710:39:337
2428727991918,0cyclictest0-21swapper/709:48:257
2428727991917,1cyclictest2737088-21ssh09:34:287
2428720991917,2cyclictest2636518-21kworker/u16:0+flush-8:008:53:565
2428714991917,2cyclictest2587648-21kworker/u16:1+flush-8:009:25:224
2428714991917,2cyclictest2500706-21kworker/u16:3+events_unbound07:58:514
2428727991817,0cyclictest0-21swapper/710:07:597
2428727991817,0cyclictest0-21swapper/708:29:047
2428714991816,2cyclictest3010682-21kworker/u16:1+events_unbound11:49:334
2428727991716,0cyclictest0-21swapper/712:36:277
2428727991716,0cyclictest0-21swapper/712:36:277
2428727991716,0cyclictest0-21swapper/712:28:267
2428727991716,0cyclictest0-21swapper/710:24:157
2428720991715,2cyclictest2689989-21kworker/u16:0+flush-8:010:39:065
2428714991715,2cyclictest2529844-21kworker/u16:4+flush-8:009:14:024
2428714991715,2cyclictest2529844-21kworker/u16:4+flush-8:009:14:024
2428714991715,2cyclictest2428430-21kworker/u16:3+flush-8:007:33:564
2428727991615,0cyclictest0-21swapper/709:42:127
2428727991615,0cyclictest0-21swapper/707:22:327
2428727991613,2cyclictest125-21kswapd010:58:507
2428720991613,2cyclictest2970598-21kworker/u16:0+flush-8:011:23:415
2428714991614,2cyclictest2129741-21kworker/u16:0+events_unbound07:09:014
2428727991514,0cyclictest0-21swapper/709:01:297
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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