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2026-07-26 - 01:04
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sat Jul 25, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247862599143141,1cyclictest0-21swapper/407:15:114
2478625997315,39cyclictest2593289-21meminfo10:35:204
247862599689,59cyclictest2610007-21awk11:05:164
247862599657,39cyclictest2512550-21diskstats08:10:164
247862599655,39cyclictest1-21systemd11:55:074
247862599635,39cyclictest236199-21snmpd08:16:334
247862599635,39cyclictest236199-21snmpd08:16:324
247862599612,39cyclictest0-21swapper/412:24:544
247862599612,23cyclictest0-21swapper/410:30:224
2478621996059,1cyclictest0-21swapper/007:15:110
247862899590,20cyclictest0-21swapper/711:15:167
2478626995940,19cyclictest691ktimers/507:25:185
247862199580,39cyclictest16-21ksoftirqd/009:15:160
2478625995737,20cyclictest601ktimers/407:40:104
2478625995718,39cyclictest2643402-21ld12:05:224
2478627995518,18cyclictest2478620-21cyclictest09:54:286
2478625995514,19cyclictest2633979-21/usr/sbin/munin11:50:264
2478625995417,18cyclictest2478620-21cyclictest07:10:164
2478625995416,19cyclictest2545820-21df09:10:164
2478625995415,18cyclictest875-21mta-sts-daemon11:20:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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