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2026-09-19 - 08:11
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sat Sep 19, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19947212415,80sleep120005-21grep19:05:191
19947212415,80sleep120005-21grep19:05:191
21099991083,75cyclictest343-21runrttasks23:39:200
211119910379,16cyclictest200-21systemd-journal23:13:551
2048321037,55sleep220518-21timerandwakeup19:05:372
2048321037,55sleep220518-21timerandwakeup19:05:372
2062429914,50sleep0359-21snmpd19:05:390
2062429914,50sleep0359-21snmpd19:05:390
21111999638,50cyclictest0-21swapper/121:49:221
21111999638,50cyclictest0-21swapper/121:49:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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