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2026-05-21 - 21:53
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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 rackfslot7.osadl.org (updated Thu May 21, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2317814999173,18cyclictest0-21swapper/312:16:293
231781499790,40cyclictest2386677-21/usr/sbin/munin09:15:213
2317814997517,39cyclictest2374683-21grep08:50:233
2317814997474,0cyclictest2357591-21ntpq08:20:173
2317814997436,19cyclictest2352411-21mailstats08:10:213
2317814997214,39cyclictest2494959-21ntp_states12:30:223
2317814997214,39cyclictest2325910-21munin-run07:24:593
2317814997113,39cyclictest2343630-21irqstats07:55:183
2317814997031,19cyclictest2416885-21cpu10:10:113
2317814996950,18cyclictest0-21swapper/307:35:103
2317814996810,39cyclictest2430455-21munin-run10:35:023
2317814996710,38cyclictest0-21swapper/312:12:243
231781499667,58cyclictest2345465-21kworker/u32:5+events_unbound08:05:103
2317814996648,18cyclictest52-21ksoftirqd/307:13:023
2317814996628,38cyclictest0-21swapper/308:46:223
231781499646,39cyclictest2345465-21kworker/u32:5+events_unbound10:44:463
231781499635,39cyclictest2419678-21kworker/u32:1+events_unbound10:53:103
231781499635,20cyclictest877-21mta-sts-daemon11:57:083
2317814996325,38cyclictest52-21ksoftirqd/310:27:293
2317814996325,38cyclictest0-21swapper/311:18:463
2317814996243,19cyclictest148-21hwrng07:34:573
2317814996023,19cyclictest2334548-21kworker/u32:2+events_unbound08:25:063
231781499570,38cyclictest2328654-21basename07:30:003
231781499560,37cyclictest2415921-21taskset10:05:263
2317814995516,39cyclictest2317810-21cyclictest09:52:173
2317814995435,19cyclictest2492130-21ntpq12:25:183
2317814995419,35cyclictest0-21swapper/311:24:533
2317814995419,15cyclictest0-21swapper/309:44:213
2317814995419,15cyclictest0-21swapper/309:03:063
2317814995334,19cyclictest875-21mta-sts-daemon11:06:123
2317814995315,19cyclictest2438911-21munin-run10:50:013
2317814995314,39cyclictest0-21swapper/311:46:223
2317814995314,39cyclictest0-21swapper/311:38:583
2317814995314,39cyclictest0-21swapper/311:01:063
2317814995314,39cyclictest0-21swapper/310:55:583
2317814995314,39cyclictest0-21swapper/310:22:583
2317814995314,39cyclictest0-21swapper/309:47:463
2317814995314,39cyclictest0-21swapper/309:37:163
2317814995314,39cyclictest0-21swapper/309:13:583
2317814995314,39cyclictest0-21swapper/309:06:173
2317814995314,39cyclictest0-21swapper/308:58:043
2317814995314,39cyclictest0-21swapper/308:15:343
2317814995314,39cyclictest0-21swapper/308:00:113
2317814995314,39cyclictest0-21swapper/307:18:303
2317814995313,39cyclictest2420885-21ntpq10:15:203
2317818995232,19cyclictest0-21swapper/709:20:167
2317814995234,18cyclictest511ktimers/311:29:063
2317814995233,19cyclictest0-21swapper/312:21:223
2317814995233,19cyclictest0-21swapper/309:30:583
2317814995233,19cyclictest0-21swapper/309:28:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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