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2026-06-16 - 18:36
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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 rack3slot6.osadl.org (updated Tue Jun 16, 2026 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138712880,6sleep113869-21needreboot08:00:271
27125998669,11cyclictest26-21ksoftirqd/111:40:141
27125998635,37cyclictest26-21ksoftirqd/110:25:251
2660728427,45sleep10-21swapper/107:06:371
27123998251,10cyclictest10148-21/usr/sbin/munin12:25:240
27125998130,37cyclictest26-21ksoftirqd/111:35:161
27123998150,10cyclictest503-21snmpd08:01:270
78442800,15sleep0171rcuc/012:16:040
78442800,15sleep0171rcuc/012:16:040
27123998045,23cyclictest14-21ksoftirqd/011:45:160
27125997630,42cyclictest26-21ksoftirqd/110:55:151
27123997445,9cyclictest9122-21ntpq12:20:280
27123997441,20cyclictest14-21ksoftirqd/011:55:120
27123997435,15cyclictest14-21ksoftirqd/011:25:300
27123997345,22cyclictest14-21ksoftirqd/008:55:160
27123997345,22cyclictest14-21ksoftirqd/008:55:160
27123997341,22cyclictest14-21ksoftirqd/009:35:180
27123997339,17cyclictest14-21ksoftirqd/012:00:260
27123997339,17cyclictest14-21ksoftirqd/012:00:260
27123997322,24cyclictest243-21systemd-journal11:13:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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