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2026-05-23 - 15:44
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sat May 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1837723526,0sleep20-21swapper/207:21:372
1817523329,0sleep00-21swapper/007:19:150
1817123026,0sleep10-21swapper/107:19:121
1786923026,0sleep30-21swapper/307:18:503
18606991313,0cyclictest0-21swapper/209:23:522
18605991212,0cyclictest8806-21sensors11:43:481
186049983,0cyclictest3524-21snmpd09:47:020
186049983,0cyclictest10071-21awk11:28:400
186049975,0cyclictest0-21swapper/011:52:540
186049972,0cyclictest21459-21awk09:58:400
186049972,0cyclictest17300-21awk08:33:380
186049972,0cyclictest16517-21awk07:43:400
186049972,0cyclictest13778-21irqcore08:08:420
186049972,0cyclictest11038-21awk10:48:440
186049972,0cyclictest10217-21awk09:33:410
186049970,0cyclictest5354-21munin-node08:03:430
186049970,0cyclictest30655-21munin-node08:43:460
186049970,0cyclictest23262-21munin-node07:53:460
339960,0migration/35107-21sh11:22:163
339960,0migration/331498-21sh09:26:383
339960,0migration/327925-21sh11:14:523
339960,0migration/321154-21munin-node08:13:423
339960,0migration/319955-21kthreadcore12:48:423
339960,0migration/318897-21sh11:51:423
339960,0migration/316445-21sh11:31:103
339960,0migration/311244-21sh09:52:583
29805060,0irq/28-eth0-rx-931-21port_sshpriv10:58:473
29805060,0irq/28-eth0-rx-6705-21kthreadcore10:43:453
186049964,0cyclictest0-21swapper/009:53:430
186049962,0cyclictest7511-21sensors10:43:480
186049962,0cyclictest7206-21kthreadcore11:43:440
186049962,0cyclictest3524-21snmpd08:16:020
186049962,0cyclictest27262-21awk11:38:410
186049961,0cyclictest23523-21diskmemload10:04:180
186049960,0cyclictest798-21munin-node07:33:380
186049960,0cyclictest7538-21kthreadcore08:48:430
186049960,0cyclictest5008-21irqrtprio11:03:420
186049960,0cyclictest32245-21hddtemp_smartct10:23:390
186049960,0cyclictest24500-21kthreadcore07:23:420
186049960,0cyclictest22088-21kthreadcore09:18:420
186049960,0cyclictest20018-21sh11:11:580
186049960,0cyclictest1968-21kthreadcore12:18:430
186049960,0cyclictest1906-21sh11:00:060
186049960,0cyclictest15540-21irqrtprio10:13:430
186049960,0cyclictest13769-21cpuspeed_turbos12:08:380
186049960,0cyclictest11849-21kthreadcore12:43:430
186049960,0cyclictest0-21swapper/012:52:290
186049960,0cyclictest0-21swapper/012:23:390
186049960,0cyclictest0-21swapper/012:00:240
186049960,0cyclictest0-21swapper/011:56:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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