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2025-12-27 - 23:50
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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 Dec 27, 2025 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23058214312,101sleep10-21swapper/107:05:241
2322121269,85sleep023276-21timerandwakeup07:05:270
2620421160,7sleep126203-21diskstats10:49:591
239409911052,12cyclictest18714-21ssh09:42:200
239409911052,12cyclictest18714-21ssh09:42:200
239579910184,11cyclictest31322-21diskmemload10:15:162
2394099996,62cyclictest31519-21runrttasks07:30:090
23957999779,12cyclictest346-21runrttasks08:34:422
23949999269,16cyclictest20264-21fschecks_time12:29:591
23957999150,8cyclictest181rcu_preempt09:27:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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