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2025-12-11 - 09:01
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rack2slot7.osadl.org (updated Thu Dec 11, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2007839994610,16cyclictest122792-21ntpd00:34:230
2007839994610,16cyclictest122792-21ntpd00:34:230
200783999392,36cyclictest2152243-21aten_r2power_en23:08:080
200783999361,23cyclictest0-21swapper/023:48:180
200784199353,9cyclictest171rcu_preempt21:20:391
2007839993516,4cyclictest0-21swapper/021:34:220
200783999350,27cyclictest0-21swapper/021:58:180
200784299342,13cyclictest2047688-21diskmemload23:58:122
2007841993325,5cyclictest271ktimers/123:58:121
200783999338,22cyclictest0-21swapper/000:26:220
2007839993318,5cyclictest2150810-21sendmail-msp23:15:180
200784199323,8cyclictest171rcu_preempt00:18:141
200783999321,16cyclictest0-21swapper/022:36:150
200783999312,20cyclictest2199588-21grep23:58:140
2007839993119,2cyclictest2212357-21aten_r2power_cu00:13:060
2007839993111,8cyclictest2204915-21ssh00:03:450
2007839993019,2cyclictest2132308-21sendmail-msp22:51:200
200784299291,4cyclictest171rcu_preempt22:43:112
200783999293,23cyclictest2127822-21ssh22:41:180
200783999292,18cyclictest0-21swapper/023:53:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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