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2026-09-10 - 17:07
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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 Thu Sep 10, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2185524440,15sleep221856-21timerwakeupswit07:05:162
224929913659,9cyclictest0-21swapper/008:29:330
225009912059,54cyclictest13480-21fschecks_count09:34:491
224929911946,15cyclictest23557-21latency_hist10:44:320
225009911862,48cyclictest0-21swapper/110:49:591
225009911758,8cyclictest0-21swapper/112:09:501
224929911751,8cyclictest0-21swapper/011:14:580
224929911746,11cyclictest0-21swapper/011:39:390
22492991163,52cyclictest30524-21mailstats10:55:020
225009910852,12cyclictest0-21swapper/111:20:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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