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2026-07-16 - 03:52
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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 Thu Jul 16, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11873210330,60sleep10-21swapper/119:05:261
12934999541,37cyclictest23487-21/usr/sbin/munin21:10:180
1119628927,51sleep00-21swapper/019:05:150
272092870,7sleep027212-21grep19:45:360
12936997961,11cyclictest26-21ksoftirqd/119:10:151
12934997641,29cyclictest24746-21telnet22:45:150
12934997640,16cyclictest13012-21/usr/sbin/munin19:10:240
12934997542,27cyclictest26451-21telnet22:50:150
12934997412,47cyclictest14-21ksoftirqd/022:00:360
12934997135,21cyclictest14-21ksoftirqd/019:40:160
12936997029,36cyclictest26-21ksoftirqd/122:30:321
12934997053,11cyclictest14-21ksoftirqd/021:15:100
12934997042,16cyclictest14-21ksoftirqd/021:51:220
12934997040,25cyclictest26595-21telnet00:20:170
12934997034,16cyclictest14-21ksoftirqd/020:25:160
12936996925,40cyclictest26-21ksoftirqd/120:40:301
12936996921,12cyclictest26-21ksoftirqd/122:05:201
1293499699,46cyclictest0-21swapper/000:31:240
12934996936,8cyclictest14-21ksoftirqd/021:00:140
12936996840,13cyclictest26-21ksoftirqd/121:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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