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2025-11-17 - 04:45
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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 Mon Nov 17, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135343699433,24cyclictest0-21swapper/123:13:071
1353436993726,7cyclictest0-21swapper/119:30:571
135343599363,9cyclictest1409565-21collect221:33:060
135343799354,9cyclictest1402885-21sendmail-msp21:27:572
135343599344,15cyclictest1412293-21ssh21:36:520
1353437993324,5cyclictest0-21swapper/221:40:572
135343599332,27cyclictest0-21swapper/022:10:550
135343799312,6cyclictest1411784-21grep21:35:542
135343799311,8cyclictest1480251-21ntpq22:53:042
135343599319,16cyclictest619-21mta-sts-daemon23:15:570
1353435993116,1cyclictest0-21swapper/023:58:050
135343599311,18cyclictest0-21swapper/021:23:060
135343799302,19cyclictest1449268-21ntpq22:18:012
135343799302,11cyclictest764-21rs:main2
135343599302,16cyclictest0-21swapper/000:13:040
135343799292,8cyclictest1555231-21/usr/sbin/munin00:17:582
135343799291,7cyclictest1427180-21sh21:53:032
135343799288,8cyclictest1438112-21sendmail22:05:532
135343799285,7cyclictest0-21swapper/221:38:132
135343799283,2cyclictest1493555-21ssh23:08:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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