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2026-05-17 - 12:34
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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 rackfslot7.osadl.org (updated Sun May 17, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
333412699195191,3cyclictest3463901-21grep23:05:011
3334128999635,58cyclictest3444243-21latency_hist22:30:013
333412899919,79cyclictest3448321-21irqstats22:35:163
3334128999191,0cyclictest3491446-21munin-run23:55:003
3334128999133,39cyclictest3379895-21sensors_temp20:30:243
3334128998546,19cyclictest0-21swapper/323:35:203
333412899780,59cyclictest3464063-21kworker/u32:5+flush-8:023:22:103
3334127997414,59cyclictest0-21swapper/221:55:162
3334128997355,18cyclictest511ktimers/323:08:543
3334128997334,39cyclictest362-21jbd2/sda2-820:13:013
3334128997333,39cyclictest0-21swapper/320:16:353
3334128997233,39cyclictest0-21swapper/322:48:383
3334128997233,39cyclictest0-21swapper/322:14:313
3334128997233,39cyclictest0-21swapper/322:05:083
3334128997233,39cyclictest0-21swapper/320:47:513
3334128997233,39cyclictest0-21swapper/319:44:493
3334128997233,38cyclictest0-21swapper/319:10:583
3334128997132,38cyclictest776-21dbus-daemon20:30:013
3334128997011,40cyclictest3334379-21/usr/sbin/munin19:10:043
333412899654,39cyclictest3430722-21systemd-run22:05:013
333412899624,39cyclictest1086-21runrttasks20:22:393
333412899623,40cyclictest3400682-21/usr/sbin/munin21:10:023
333412899623,39cyclictest0-21swapper/323:14:543
3334128996224,38cyclictest511ktimers/323:40:323
3334128996121,20cyclictest511ktimers/320:08:373
3334128996038,19cyclictest511ktimers/320:55:233
3334128996021,39cyclictest0-21swapper/321:26:353
3334128995820,38cyclictest3345432-21cut19:30:013
3334128995738,19cyclictest3356324-21munin-run19:50:023
3334128995618,38cyclictest0-21swapper/322:22:273
333412899560,36cyclictest3396870-21ntp_states21:00:213
3334127995617,19cyclictest0-21swapper/223:05:152
3334128995537,18cyclictest3510142-21kworker/5:000:37:593
3334128995537,0cyclictest0-21swapper/321:12:173
3334128995536,19cyclictest3445919-21ntpq22:30:193
3334128995533,19cyclictest0-21swapper/323:34:583
3334128995517,38cyclictest3362727-21if_eno120:00:153
3334128995515,39cyclictest0-21swapper/319:16:373
3334128995435,19cyclictest3395562-21kworker/u32:5-flush-8:021:30:253
3334128995432,19cyclictest0-21swapper/322:51:143
3334128995419,35cyclictest0-21swapper/322:56:063
3334128995419,35cyclictest0-21swapper/321:48:353
3334128995419,35cyclictest0-21swapper/319:35:553
3334128995419,35cyclictest0-21swapper/300:31:563
3334128995419,15cyclictest0-21swapper/323:59:263
3334128995419,15cyclictest0-21swapper/323:02:153
3334128995419,15cyclictest0-21swapper/321:52:153
3334128995419,15cyclictest0-21swapper/321:35:553
3334128995419,15cyclictest0-21swapper/321:20:533
3334128995419,15cyclictest0-21swapper/319:52:493
3334128995419,15cyclictest0-21swapper/319:20:383
3334128995419,15cyclictest0-21swapper/300:24:123
3334128995419,15cyclictest0-21swapper/300:12:223
3334128995419,15cyclictest0-21swapper/300:09:223
3334128995419,15cyclictest0-21swapper/300:00:533
3334128995416,19cyclictest3451477-21ntpq22:40:203
3334128995416,19cyclictest3406185-21cat21:20:023
3334128995415,39cyclictest0-21swapper/300:16:413
3334128995333,20cyclictest0-21swapper/320:41:573
3334128995333,20cyclictest0-21swapper/320:41:573
3334128995331,19cyclictest0-21swapper/300:25:103
3334128995319,34cyclictest0-21swapper/321:57:123
3334128995319,15cyclictest0-21swapper/323:46:563
3334128995319,15cyclictest0-21swapper/323:28:113
3334128995319,15cyclictest0-21swapper/322:16:513
3334128995319,15cyclictest0-21swapper/320:35:423
3334128995319,15cyclictest0-21swapper/320:35:413
3334128995319,15cyclictest0-21swapper/319:57:543
3334128995314,39cyclictest0-21swapper/323:15:073
3334128995233,19cyclictest0-21swapper/321:40:343
3334128995233,19cyclictest0-21swapper/320:50:553
3334128995233,19cyclictest0-21swapper/319:30:233
3334127995214,19cyclictest0-21swapper/219:10:172
3334133995113,19cyclictest0-21swapper/721:05:177
3334133995012,19cyclictest0-21swapper/721:35:167
3334133995011,38cyclictest0-21swapper/719:30:307
3334132995011,39cyclictest0-21swapper/623:40:166
333413399478,20cyclictest0-21swapper/722:45:157
333413399470,0cyclictest0-21swapper/720:50:117
333412799479,19cyclictest0-21swapper/222:50:172
3334132994627,19cyclictest0-21swapper/600:25:186
333413199464,1cyclictest691ktimers/500:10:025
333412799457,19cyclictest0-21swapper/221:10:162
3334127994325,18cyclictest0-21swapper/223:40:172
333412799413,19cyclictest0-21swapper/222:55:162
333413299401,39cyclictest0-21swapper/619:15:166
333413099401,38cyclictest90750irq/69-eno6-TxRx-720:03:394
333412699400,0cyclictest0-21swapper/100:10:031
3334133993938,0cyclictest3505064-21kworker/7:2+events00:25:237
333413399390,39cyclictest0-21swapper/700:00:147
333413399380,19cyclictest0-21swapper/700:10:157
333412799380,19cyclictest0-21swapper/221:40:162
333412799380,19cyclictest0-21swapper/219:35:152
3334125993838,0cyclictest0-21swapper/020:03:390
3334133993737,0cyclictest3323381-21kworker/7:1+events22:37:407
3334133993719,0cyclictest0-21swapper/700:35:167
333412799370,36cyclictest0-21swapper/221:35:162
3334133993636,0cyclictest3469608-21kworker/7:0+events23:19:147
3334133993636,0cyclictest3323381-21kworker/7:1+events21:02:397
3334133993636,0cyclictest3323381-21kworker/7:1+events20:04:197
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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