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2025-02-11 - 04:03
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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 Tue Feb 11, 2025 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
589472997354,19cyclictest990-21mta-sts-daemon19:25:176
589471996728,38cyclictest0-21swapper/500:25:215
58947199656,39cyclictest616319-21irqstats19:55:195
58947199636,38cyclictest694494-21latency_hist22:30:015
58947199634,39cyclictest724284-21ntp_states23:30:175
589471996041,19cyclictest0-21swapper/519:10:175
589471996040,19cyclictest629418-21apt-get20:20:135
589471996040,19cyclictest0-21swapper/522:50:015
589471996020,39cyclictest656864-21taskset21:07:575
589471996020,39cyclictest656864-21taskset21:07:575
589471996020,39cyclictest361-21jbd2/sda2-822:40:235
58947199600,58cyclictest0-21swapper/519:51:515
589471995921,19cyclictest711103-21ntpq23:00:205
589471995819,38cyclictest0-21swapper/520:35:175
58947199580,39cyclictest361-21jbd2/sda2-821:42:475
589471995719,37cyclictest0-21swapper/500:18:035
589471995718,38cyclictest0-21swapper/520:13:255
589471995637,18cyclictest0-21swapper/519:20:135
589471995619,36cyclictest0-21swapper/520:31:395
589471995618,19cyclictest0-21swapper/520:20:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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