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2023-11-28 - 21:13
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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 (updated Fri Nov 24, 2023 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2894210722,39sleep00-21swapper/007:07:220
2219821040,5chrt22199-21/usr/sbin/munin08:00:281
311228627,48sleep10-21swapper/107:09:091
332099856,22cyclictest27128-21apt-get09:50:170
3320997428,41cyclictest14-21ksoftirqd/008:53:580
3320997428,41cyclictest14-21ksoftirqd/008:53:580
332099735,58cyclictest28872-21apt-get09:55:230
44942720,5sleep1251rcuc/110:15:461
3324997141,10cyclictest26-21ksoftirqd/108:10:241
332099717,20cyclictest11033-21apt-get10:35:230
3324996945,18cyclictest26-21ksoftirqd/107:20:381
3320996730,31cyclictest14-21ksoftirqd/012:04:360
3324996636,18cyclictest26-21ksoftirqd/108:20:441
332099665,18cyclictest22676-21apt-get09:35:250
3324996548,11cyclictest26-21ksoftirqd/109:40:241
3324996537,12cyclictest26-21ksoftirqd/110:20:171
3324996441,17cyclictest26-21ksoftirqd/110:05:281
3324996440,9cyclictest26-21ksoftirqd/111:40:401
3324996440,9cyclictest26-21ksoftirqd/108:05:331
3324996440,19cyclictest26-21ksoftirqd/108:40:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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